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

Current Water Temperature

44.2°F

Measurement Time: Tuesday, February 17, 2026, 5:48 AM EST

Temperature Locations

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Local Points of Interest

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

St. Marys River

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

Elevation Above Sea Level: 568 feet

Sensor Depth: -8 feet

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 mi)
Au Sable River, Mio, MI (126.4 mi)

Weather for Sault Ste. Marie, Michigan

Current Weather

30°F
Mist
Mist
27.5°F
32.2°F
100%
NW 2.7 mph
5.6 mph
29.7°F
31.5°F
0 in
60%
0 mi
1016 mbar
0

Five Day Weather Forecast

Freezing fog
Tue
H: 33°F
L: 28°F
Heavy snow
Wed
H: 28°F
L: 24°F
Overcast
Thu
H: 32°F
L: 21°F
Heavy snow
Fri
H: 29°F
L: 23°F
Light snow
Sat
H: 29°F
L: 16°F

Air Quality

AQI: 1 - Good
PM2.5: 7.95 μg/m3
PM10: 8.25 μg/m3
Carbon Monoxide: 340.85 μg/m3
Nitrogen Dioxide: 8.75 μg/m3
Sulphur Dioxide: 3.95 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:51 AM
Sunset: 6:06 PM
Daylight: 10 hrs 29 mins
Moonrise: 7:49 AM
Moon Transit: 1:03 PM
Moonset: 6:31 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:57 AM - 3:27 AM
12:33 AM - 3:03 PM

Minor Periods

6:01 PM - 7:31 PM
7:19 AM - 8:49 AM

Action Rating: 5 out of 5

special weather statement 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: Mon February 16, 2026, 3:11 PM
Expires: Tue February 17, 2026, 7:11 AM

Heavy snowfall expected Wednesday. What: Snowfall amounts of 5 to 15 cm. When: Beginning Wednesday morning and continuing into Wednesday evening. Additional information: Snow associated with an approaching system will develop Wednesday morning. There remains some uncertainty with the track of this system, therefore, snowfall amounts and areas affected could change. Warnings may be issued as the event draws closer. Roads and walkways may be difficult to navigate. Some travel delays are possible. Road closures are possible. Allow extra time for travel. ### 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. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.


Winter Storm Watch issued February 16 at 1:57PM EST until February 18 at 10:00PM EST by NWS Gaylord MI

Effective: Mon February 16, 2026, 1:57 PM
Expires: Tue February 17, 2026, 2:00 AM

* WHAT...Heavy snow possible. Snow may mix with freezing rain at times. Total snow accumulations between 4 and 8 inches and ice accumulations of up to one tenth of an inch possible. Winds could gust as high as 35 mph. * WHERE...A portion of Eastern Upper Michigan. * WHEN...From late Tuesday night through Wednesday evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes.

Monitor the latest forecasts for updates on this situation.


Tuesday, February 17, 2026

Weather Forecast

Freezing fog
33.4°F
28.2°F
31.3°F
96%
0 in
0%
7%
10.1 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.8 μg/m3
PM10: 7.34 μg/m3
Carbon Monoxide: 274.33 μg/m3
Nitrogen Dioxide: 6.23 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 73.24 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:51 AM
Sunset: 6:06 PM
Daylight: 10 hrs 29 mins
Moonrise: 7:49 AM
Moon Transit: 1:03 PM
Moonset: 6:31 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:57 AM - 3:27 AM
12:33 AM - 3:03 PM

Minor Periods

6:01 PM - 7:31 PM
7:19 AM - 8:49 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Heavy snow
27.9°F
23.5°F
25.8°F
88%
2.9 in
78%
62%
18.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.86 μg/m3
Carbon Monoxide: 184.97 μg/m3
Nitrogen Dioxide: 3.93 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 86.6 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 12:51 AM
Sunset: 6:07 PM
Daylight: 10 hrs 32 mins
Moonrise: 8:07 AM
Moon Transit: 1:49 PM
Moonset: 7:45 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
1:19 PM - 3:49 PM

Minor Periods

7:15 PM - 8:45 PM
7:37 AM - 9:07 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Overcast
31.6°F
21°F
26.5°F
85%
0 in
0%
0%
14.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.52 μg/m3
PM10: 1.69 μg/m3
Carbon Monoxide: 178.93 μg/m3
Nitrogen Dioxide: 2.18 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 12:51 AM
Sunset: 6:09 PM
Daylight: 10 hrs 35 mins
Moonrise: 8:24 AM
Moon Transit: 4:07 PM
Moonset: 9:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
3:37 PM - 6:07 PM

Minor Periods

8:31 PM - 10:01 PM
7:54 AM - 9:24 AM

Action Rating: 4 out of 5

Friday, February 20, 2026

Weather Forecast

Heavy snow
28.6°F
22.9°F
26.5°F
91%
0.53 in
72%
39%
17 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.21 μg/m3
PM10: 2.37 μg/m3
Carbon Monoxide: 176.34 μg/m3
Nitrogen Dioxide: 2.64 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 81.36 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 12:50 AM
Sunset: 6:10 PM
Daylight: 10 hrs 38 mins
Moonrise: 8:42 AM
Moon Transit: 3:21 PM
Moonset: 10:18 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:51 PM - 5:21 PM

Minor Periods

9:48 PM - 11:18 PM
8:12 AM - 9:42 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Light snow
29.4°F
15.9°F
21.7°F
94%
0.08 in
60%
61%
11.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.07 μg/m3
PM10: 2.44 μg/m3
Carbon Monoxide: 166.88 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:50 AM
Sunset: 6:12 PM
Daylight: 10 hrs 42 mins
Moonrise: 9:01 AM
Moon Transit: 4:10 PM
Moonset: 11:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:02 AM - 6:32 AM
3:40 PM - 6:10 PM

Minor Periods

12:00 AM - 12:00 AM
8:31 AM - 10:01 AM

Action Rating: 3 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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