Water Temperature of the St. Marys River in Sault Ste. Marie, MI

Current Water Temperature

48.4°F

Measurement Time: Thursday, November 27, 2025, 8:12 PM EST

Temperature Locations

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Local Points of Interest

Rotary Park; Rotary Island; Steers Island; Island Number One; Sault Sainte Marie

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St. Marys River

Station Name: Little Rapids
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 568 feet / 173 meters

Sensor Depth: -8.2 feet / -2.5 meters

Nearest Address:
1425 Riverside Dr
Sault Ste. Marie, MI 49783
Chippewa County

GPS Coordinates: 46.485832, -84.301666

Nearby Water Temperatures

St. Marys River, Sault Ste. Marie, MI (3.5 mi)
St. Marys River, Barbeau, MI (14.5 mi)
St. Marys River, Barbeau, MI (16.2 mi)
Lake Huron, De Tour Village, MI (39.2 mi)
Lake Huron, Bois Blanc Island, MI (49.9 mi)
Straits of Mackinac, Mackinaw City, MI (50.9 mi)
Seul Choix Bay, Port Inland, MI (83.1 mi)
Little Traverse Bay, Petoskey, MI (83.7 mi)
Lake Huron, Alpena, MI (105.3 mi)
Miners River, Munising, MI (106.5 mi)
Thunder Bay River, Alpena, MI (106.9 mi)
Lake Huron, Alpena, MI (114.8 mi)
North Branch Au Sable River, Grayling, MI (122.4 mi)
Au Sable River, Luzerne, MI (125.0 mi)
Au Sable River, Mio, MI (126.4 mi)

Weather for Sault Ste. Marie, Michigan

Current Weather

28°F
Light snow
Conditions: Light snow
Humidity: 75%
Feels Like: 16.1°F
Wind: NNW 16.1 mph
Wind Gusts: 22.3 mph
Pressure: 29.88 in
Precipitation: 0.01 in
Cloud Cover: 100%
Visibility: 4 mi
UV Index: 0

Five Day Weather Forecast

Patchy light snow
Thu
H: 28°F
L: 25°F
Patchy moderate snow
Fri
H: 28°F
L: 23°F
Overcast
Sat
H: 29°F
L: 24°F
Patchy moderate snow
Sun
H: 30°F
L: 24°F
Moderate snow
Mon
H: 20°F
L: 6°F

Air Quality

AQI: 1 - Good
PM2.5: 1.05 μg/m3
PM10: 1.05 μg/m3
Carbon Monoxide: 138.85 μg/m3
Nitrogen Dioxide: 1.45 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 7:56 AM
Sun Transit: 12:24 AM
Sunset: 4:54 PM
Daylight: 8 hrs 58 mins
Moonrise: 1:14 PM
Moon Transit: 6:26 PM
Moonset: 11:51 PM
Moon Phase: First Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
5:56 PM - 8:26 PM

Minor Periods

12:00 AM - 12:00 AM
12:44 AM - 2:14 PM

Action Rating: 2 out of 5

yellow watch - snow squall - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu November 27, 2025, 5:00 AM
Expires: Thu November 27, 2025, 9:00 PM

Snow squalls possible beginning this morning. What: Local snowfall amounts of 5 to 15 cm. Near zero visibility at times in heavy snow and local blowing snow. When: Today and tonight. Additional information: Snow squalls have developed over Lake Superior and Whitefish Bay this morning. It remains uncertain if these squalls will affect portions of Superior East and Sault Ste Marie as they could remain over the lakes and Upper Michigan. If they do affect the area, strong winds could result in areas of blowing snow giving reduced visibility. ### Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for the possibility of quickly changing and deteriorating travel conditions. Prepare for possible disruptions to transportation, services, and utilities.


yellow warning - snow squall - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu November 27, 2025, 11:00 AM
Expires: Fri November 28, 2025, 2:01 AM

Snow squalls today. What: Local snowfall amounts of 5 to 15 cm. Near zero visibility at times in heavy snow and local blowing snow. When: Ending tonight. Additional information: Snow squalls off Lake Superior will continue to affect areas near Whitefish Bay and areas mainly west of the city of Sault Ste. Marie this afternoon. ### Visibility will likely be suddenly reduced to near zero at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for quickly changing and deteriorating travel conditions.


yellow warning - snow squall - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu November 27, 2025, 7:58 AM
Expires: Thu November 27, 2025, 11:58 PM

Snow squalls today. What: Local snowfall amounts of 10 to 15 cm. Near zero visibility at times in heavy snow and local blowing snow. When: Today and tonight. Additional information: Snow squalls have developed over Lake Superior and Whitefish Bay this morning. The snow squall should mainly affect areas west of the city of Sault Ste. Marie, near Whitefish Bay. ### Visibility will likely be suddenly reduced to near zero at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for quickly changing and deteriorating travel conditions.


yellow warning - snow squall - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu November 27, 2025, 6:46 PM
Expires: Fri November 28, 2025, 3:02 AM

Snow squalls continue. What: Additional local snowfall amounts of 5 to 10 cm. Near zero visibility at times in heavy snow and local blowing snow. When: Ending tonight. Additional information: Snow squalls off Lake Superior will continue to affect areas near Whitefish Bay and areas mainly west of the city of Sault Ste. Marie. ### Visibility will likely be suddenly reduced to near zero at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for quickly changing and deteriorating travel conditions.


Winter Weather Advisory issued November 27 at 6:24AM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 6:24 AM
Expires: Thu November 27, 2025, 6:30 PM

...HIGH IMPACT LAKE EFFECT SNOW AND WINDS FOR THE THANKSGIVING HOLIDAY... .Heavy lake effect snow and strong winds will continue today, resulting in dangerous travel at times across parts of northern Michigan through Friday. Localized dangerous travel will be possible under heavy lake effect snow bands for most of the day today, especially across stretches of US-131 and I-75. * WHAT...Lake effect snow expected. Total snow accumulations between 2 and 6 inches west of Drummond Island. Winds gusting as high as 40 mph. * WHERE...Southeast Chippewa County. * WHEN...Until 7 PM EST Friday. * IMPACTS...Snow and strong winds will lead to significant drops in visibility at times, making for hazardous travel.

Slow down and use caution while traveling.


Winter Storm Warning issued November 27 at 6:24AM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 6:24 AM
Expires: Thu November 27, 2025, 6:30 PM

...HIGH IMPACT LAKE EFFECT SNOW AND WINDS FOR THE THANKSGIVING HOLIDAY... .Heavy lake effect snow and strong winds will continue today, resulting in dangerous travel at times across parts of northern Michigan through Friday. Localized dangerous travel will be possible under heavy lake effect snow bands for most of the day today, especially across stretches of US-131 and I-75. * WHAT...Heavy lake effect snow and strong winds expected. Additional snow accumulations between 3 and 10 inches. Winds gusting as high as 40 mph. * WHERE...Central Chippewa, Eastern Mackinac, Western Chippewa, and Western Mackinac Counties. * WHEN...Until 7 PM EST Friday. * IMPACTS...Heavy snow and strong winds will lead to significant drops in visibility. Whiteout conditions are expected at times of heaviest snow and winds. Combination of visibility restrictions and snow covered roads will make for hazardous travel.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.


Winter Storm Warning issued November 27 at 12:30PM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 12:30 PM
Expires: Fri November 28, 2025, 12:30 AM

* WHAT...Heavy snow. Additional snow accumulations as high as 9 inches. Winds gusting as high as 35 mph. * WHERE...Central Chippewa, Eastern Mackinac, Western Chippewa, and Western Mackinac Counties. * WHEN...Until 7 PM EST Friday. * IMPACTS...Heavy snow and strong winds will lead to significant drops in visibility. Whiteout conditions are expected at times of heaviest snow and winds. Combination of visibility restrictions and snow covered roads will make for hazardous travel.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Turn on headlights so others can see you.


Winter Weather Advisory issued November 27 at 12:30PM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 12:30 PM
Expires: Fri November 28, 2025, 12:30 AM

* WHAT...Snow. Additional snow accumulations up to 7 inches. Winds gusting as high as 35 mph. * WHERE...Southeast Chippewa County. * WHEN...Until 7 PM EST Friday. * IMPACTS...Snow and strong winds will lead to significant drops in visibility at times, making for hazardous travel.

Slow down and use caution while traveling.


Winter Weather Advisory issued November 27 at 4:47PM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 4:47 PM
Expires: Fri November 28, 2025, 5:00 AM

* WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 35 mph. * WHERE...Southeast Chippewa County. * WHEN...Until 7 PM EST Friday. * IMPACTS...Snow and strong winds will lead to significant drops in visibility at times, making for hazardous travel.

Slow down and use caution while traveling.


Winter Storm Warning issued November 27 at 4:47PM EST until November 28 at 7:00PM EST by NWS Gaylord MI

Effective: Thu November 27, 2025, 4:47 PM
Expires: Fri November 28, 2025, 5:00 AM

* WHAT...Heavy snow. Additional snow accumulations of 3-7 inches. Winds gusting as high as 35 mph. * WHERE...Central Chippewa, Eastern Mackinac, Western Chippewa, and Western Mackinac Counties. * WHEN...Until 7 PM EST Friday. * IMPACTS...Heavy snow and strong winds will lead to significant drops in visibility. Whiteout conditions are expected at times of heaviest snow and winds. Combination of visibility restrictions and snow covered roads will make for hazardous travel.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Turn on headlights so others can see you.


Thursday, November 27, 2025

Weather Forecast

Conditions: Patchy light snow
Average Temperature: 26.5°F
Average Humidity: 83%
Chance of Rain: 72%
Wind: 17.7 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.08 μg/m3
PM10: 1.09 μg/m3
Carbon Monoxide: 173.61 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 71.84 μg/m3

Astronomical

Sunrise: 7:56 AM
Sun Transit: 12:24 AM
Sunset: 4:54 PM
Daylight: 8 hrs 58 mins
Moonrise: 1:14 PM
Moon Transit: 6:26 PM
Moonset: 11:51 PM
Moon Phase: First Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
5:56 PM - 8:26 PM

Minor Periods

12:00 AM - 12:00 AM
12:44 AM - 2:14 PM

Action Rating: 2 out of 5

Friday, November 28, 2025

Weather Forecast

Conditions: Patchy moderate snow
Average Temperature: 25.7°F
Average Humidity: 75%
Chance of Rain: 67%
Wind: 17.4 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.19 μg/m3
PM10: 1.31 μg/m3
Carbon Monoxide: 141.45 μg/m3
Nitrogen Dioxide: 1.52 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 85.92 μg/m3

Astronomical

Sunrise: 7:57 AM
Sun Transit: 12:25 AM
Sunset: 4:53 PM
Daylight: 8 hrs 56 mins
Moonrise: 1:32 PM
Moon Transit: 7:12 PM
Moonset: 12:51 AM
Moon Phase: First Quarter
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

7:06 AM - 9:36 AM
6:42 PM - 9:12 PM

Minor Periods

1:02 PM - 2:32 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, November 29, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 26.1°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.52 μg/m3
PM10: 1.63 μg/m3
Carbon Monoxide: 147.49 μg/m3
Nitrogen Dioxide: 2.27 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 83.48 μg/m3

Astronomical

Sunrise: 7:58 AM
Sun Transit: 12:25 AM
Sunset: 4:53 PM
Daylight: 8 hrs 54 mins
Moonrise: 1:49 PM
Moon Transit: 7:58 PM
Moonset: 1:05 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

8:42 PM - 11:12 PM
7:28 PM - 9:58 PM

Minor Periods

1:19 PM - 2:49 PM
12:35 AM - 2:05 AM

Action Rating: 2 out of 5

Sunday, November 30, 2025

Weather Forecast

Conditions: Patchy moderate snow
Average Temperature: 26.1°F
Average Humidity: 72%
Chance of Rain: 71%
Wind: 17.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.57 μg/m3
PM10: 1.6 μg/m3
Carbon Monoxide: 152.25 μg/m3
Nitrogen Dioxide: 3.36 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 80.08 μg/m3

Astronomical

Sunrise: 8:00 AM
Sun Transit: 12:26 AM
Sunset: 4:52 PM
Daylight: 8 hrs 53 mins
Moonrise: 2:07 PM
Moon Transit: 8:46 PM
Moonset: 2:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
8:16 PM - 10:46 PM

Minor Periods

1:37 PM - 3:07 PM
1:52 AM - 3:22 AM

Action Rating: 2 out of 5

Monday, December 1, 2025

Weather Forecast

Conditions: Moderate snow
Average Temperature: 15.7°F
Average Humidity: 87%
Chance of Rain: 83%
Wind: 14.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.63 μg/m3
PM10: 1.67 μg/m3
Carbon Monoxide: 151.47 μg/m3
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 82.85 μg/m3

Astronomical

Sunrise: 8:01 AM
Sun Transit: 12:26 AM
Sunset: 4:52 PM
Daylight: 8 hrs 51 mins
Moonrise: 2:28 PM
Moon Transit: 9:37 PM
Moonset: 3:42 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

9:28 AM - 11:58 AM
9:07 PM - 11:37 PM

Minor Periods

1:58 PM - 3:28 PM
3:12 AM - 4:42 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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