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

Current Water Temperature

Current temperature data is
not available at this time.

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

34°F
Overcast
Overcast
23.4°F
35°F
72%
NW 17.2 mph
19.8 mph
24.5°F
28°F
0 in
100%
9 mi
1004 mbar
5.5

Five Day Weather Forecast

Moderate rain
Sat
H: 54°F
L: 31°F
Light snow showers
Sun
H: 31°F
L: 26°F
Partly Cloudy
Mon
H: 39°F
L: 25°F
Patchy rain nearby
Tue
H: 50°F
L: 31°F
Sunny
Wed
H: 51°F
L: 28°F

Air Quality

AQI: 1 - Good
PM2.5: 1.85 μg/m3
PM10: 2.05 μg/m3
Carbon Monoxide: 165.85 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:36 PM
Sunset: 8:30 PM
Daylight: 13 hrs 45 mins
Moonrise: 6:54 AM
Moon Transit: 2:40 PM
Moonset: 10:44 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
2:10 PM - 4:40 PM

Minor Periods

10:14 PM - 11:44 PM
6:24 AM - 7:54 AM

Action Rating: 4 out of 5

yellow warning - rainfall - in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Sat April 18, 2026, 7:55 AM
Expires: Sat April 18, 2026, 11:04 PM

Rain, at times heavy, is expected. The ground, already near saturation, has little ability to absorb further rainfall. What: Rainfall amounts of 20 to 30 mm. When: Continuing through this afternoon. Additional information: A cold front will continue to move through the region today, bringing showers and the risk of a thunderstorm. Portions of the region have received significant rainfall amounts over the last few days. As a result, further rainfall could have significant impacts. Localized flooding is likely. Some roads may become impassable. ### For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit https://www.ontario.ca/page/floods for the latest details. 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.

Don't drive through flooded roadways. Avoid low-lying areas. Watch for washouts near rivers, creeks and culverts.


yellow warning - rainfall - in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Sat April 18, 2026, 12:36 AM
Expires: Sat April 18, 2026, 4:36 PM

Rain, at times heavy, is expected. The ground, already near saturation, has little ability to absorb further rainfall. What: Rainfall amounts of 20 to 30 mm. When: Beginning overnight and ending Saturday morning or early Saturday afternoon. Additional information: A cold front will sweep through the region tonight into Saturday, bringing showers and the risk of a thunderstorm. Portions of the region have received significant rainfall amounts over the last few days. As a result, further rainfall could have significant impacts. Localized flooding is likely. Some roads may become impassable. ### For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit https://www.ontario.ca/page/floods for the latest details. 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.

Don't drive through flooded roadways. Avoid low-lying areas. Watch for washouts near rivers, creeks and culverts.


Flood Watch issued April 17 at 9:03PM EDT until April 19 at 8:00AM EDT by NWS Gaylord MI

Effective: Sat April 18, 2026, 1:03 AM
Expires: Sun April 19, 2026, 6:15 AM

* WHAT...Potential for flooding impacts will increase across eastern upper Michigan tonight with an expected 0.25 to 0.75 inches of rainfall, with locally higher amounts possible. Combination of rain on top of a melting snowpack in conjunction with frozen grounds will lead to an anomalously high potential for flooding. * WHERE...A portion of Eastern Upper Michigan, including the following areas, Central Chippewa, Eastern Mackinac, Southeast Chippewa, Western Chippewa and Western Mackinac. * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Potential for road and bridge washouts. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Flood Watch issued April 18 at 3:10AM EDT until April 19 at 8:00AM EDT by NWS Gaylord MI

Effective: Sat April 18, 2026, 7:10 AM
Expires: Sun April 19, 2026, 6:00 AM

* WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...A portion of Eastern Upper Michigan, including the following areas, Central Chippewa, Eastern Mackinac, Southeast Chippewa, Western Chippewa and Western Mackinac. * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Potential for road and bridge washouts. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Saturday, April 18, 2026

Weather Forecast

Moderate rain
53.6°F
30.7°F
38.4°F
86%
0.76 in
88%
19%
17.9 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 4.77 μg/m3
PM10: 5.14 μg/m3
Carbon Monoxide: 168.21 μg/m3
Nitrogen Dioxide: 2.47 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 87.6 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:36 PM
Sunset: 8:30 PM
Daylight: 13 hrs 45 mins
Moonrise: 6:54 AM
Moon Transit: 2:40 PM
Moonset: 10:44 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
2:10 PM - 4:40 PM

Minor Periods

10:14 PM - 11:44 PM
6:24 AM - 7:54 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Light snow showers
31.4°F
25.6°F
29.3°F
62%
0.03 in
88%
54%
17 mph
3.8


Air Quality

AQI: 1 - Good
PM2.5: 2.49 μg/m3
PM10: 2.85 μg/m3
Carbon Monoxide: 167.41 μg/m3
Nitrogen Dioxide: 1.53 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 94 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:36 PM
Sunset: 8:31 PM
Daylight: 13 hrs 48 mins
Moonrise: 7:27 AM
Moon Transit: 3:41 PM
Moonset: 12:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
3:11 PM - 5:41 PM

Minor Periods

12:00 AM - 12:00 AM
6:57 AM - 8:27 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Partly Cloudy
39.2°F
24.8°F
31.1°F
53%
0 in
0%
6%
10.1 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 3.76 μg/m3
PM10: 4.57 μg/m3
Carbon Monoxide: 166.37 μg/m3
Nitrogen Dioxide: 1.88 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 95.4 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:36 PM
Sunset: 8:32 PM
Daylight: 13 hrs 51 mins
Moonrise: 8:13 AM
Moon Transit: 4:45 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
4:15 PM - 6:45 PM

Minor Periods

7:43 AM - 9:13 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, April 21, 2026

Weather Forecast

Patchy rain nearby
50.1°F
31.1°F
39.3°F
76%
0.05 in
72%
6%
15.9 mph
5.2


Air Quality

AQI: 1 - Good
PM2.5: 5.32 μg/m3
PM10: 6.19 μg/m3
Carbon Monoxide: 172.75 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 91.56 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:35 PM
Sunset: 8:34 PM
Daylight: 13 hrs 54 mins
Moonrise: 9:11 AM
Moon Transit: 5:50 PM
Moonset: 1:24 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
5:20 PM - 7:50 PM

Minor Periods

8:41 AM - 10:11 AM
12:54 AM - 2:24 AM

Action Rating: 2 out of 5

Wednesday, April 22, 2026

Weather Forecast

Sunny
51.3°F
27.6°F
37.8°F
67%
0 in
0%
0%
12.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.37 μg/m3
PM10: 2.71 μg/m3
Carbon Monoxide: 163.77 μg/m3
Nitrogen Dioxide: 3.13 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 82.23 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:35 PM
Sunset: 8:35 PM
Daylight: 13 hrs 57 mins
Moonrise: 10:24 AM
Moon Transit: 6:52 PM
Moonset: 2:25 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:39 AM - 9:09 AM
6:22 PM - 8:52 PM

Minor Periods

9:54 AM - 11:24 AM
1:55 AM - 3:25 AM

Action Rating: 4 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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