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

Current Water Temperature

43.5°F

Measurement Time: Monday, May 25, 2026, 3:24 PM EDT

Temperature Locations

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Local Points of Interest

Ashmun Bay; Whitefish Island; St. Mary's Island; Soo Locks; Sault Sainte Marie

St. Marys River

Station Name: S.W. Pier, St. Marys River
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 597 feet

Sensor Depth: -4 feet

Nearest Address:
Point West Dr
Sault Ste. Marie, MI 49783
Chippewa County

GPS Coordinates: 46.501111, -84.372611

Nearby Water Temperatures

St. Marys River, Sault Ste. Marie, MI (3.5 mi)
St. Marys River, Barbeau, MI (16.8 mi)
St. Marys River, Barbeau, MI (18.5 mi)
Lake Huron, De Tour Village, MI (41.8 mi)
Straits of Mackinac, Mackinaw City, MI (50.5 mi)
Lake Huron, Bois Blanc Island, MI (51.6 mi)
Seul Choix Bay, Port Inland, MI (80.5 mi)
Little Traverse Bay, Petoskey, MI (83.1 mi)
Miners River, Munising, MI (103.1 mi)
Lake Huron, Alpena, MI (108.3 mi)
Thunder Bay River, Alpena, MI (109.3 mi)
Lake Huron, Alpena, MI (117.3 mi)
North Branch Au Sable River, Grayling, MI (123.3 mi)
Au Sable River, Luzerne, MI (126.1 mi)
Lake Michigan, Leland, MI (126.3 mi)

Weather for Sault Ste. Marie, Michigan

Current Weather

75°F
Partly cloudy
Partly cloudy
77.2°F
79.7°F
46%
SSW 9.2 mph
11.5 mph
78.5°F
58.4°F
0 in
75%
9 mi
1015 mbar
3.8

Five Day Weather Forecast

Partly Cloudy
Mon
H: 81°F
L: 49°F
Patchy rain nearby
Tue
H: 67°F
L: 45°F
Sunny
Wed
H: 63°F
L: 45°F
Sunny
Thu
H: 63°F
L: 42°F
Patchy rain nearby
Fri
H: 60°F
L: 43°F

Air Quality

AQI: 1 - Good
PM2.5: 5.15 μg/m3
PM10: 5.45 μg/m3
Carbon Monoxide: 146.85 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:34 PM
Sunset: 9:16 PM
Daylight: 15 hrs 23 mins
Moonrise: 3:44 PM
Moon Transit: 9:40 PM
Moonset: 3:07 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

9:35 AM - 12:05 AM
9:10 PM - 11:40 PM

Minor Periods

3:14 PM - 4:44 PM
2:37 AM - 4:07 AM

Action Rating: 3 out of 5

yellow advisory - fog - ended

Service Notice – April 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 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 June 2026 deployment. Data changes will appear in CAP following this deployment, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) 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 – avril 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 le printemps 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 en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) 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 May 25, 2026, 12:14 PM
Expires: Mon May 25, 2026, 1:14 PM

Poor visibility in fog is no longer expected. ###


yellow advisory - fog - in effect

Service Notice – April 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 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 June 2026 deployment. Data changes will appear in CAP following this deployment, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) 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 – avril 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 le printemps 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 en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) 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 May 25, 2026, 10:45 AM
Expires: Mon May 25, 2026, 3:01 PM

Near-zero visibility in fog continues over some areas. Visibility in these areas of dense fog will gradually improve late this morning, however, fog patches may linger into the early afternoon. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced 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.

If driving, turn on your lights, slow down and maintain a safe following distance.


Monday, May 25, 2026

Weather Forecast

Partly Cloudy
80.6°F
49.1°F
62.9°F
76%
0 in
0%
0%
10.7 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 6.38 μg/m3
PM10: 6.55 μg/m3
Carbon Monoxide: 157.73 μg/m3
Nitrogen Dioxide: 3.76 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 68.96 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:34 PM
Sunset: 9:16 PM
Daylight: 15 hrs 23 mins
Moonrise: 3:44 PM
Moon Transit: 9:40 PM
Moonset: 3:07 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

9:35 AM - 12:05 AM
9:10 PM - 11:40 PM

Minor Periods

3:14 PM - 4:44 PM
2:37 AM - 4:07 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Patchy rain nearby
67.1°F
44.8°F
58.2°F
82%
0.09 in
89%
0%
10.1 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 6.09 μg/m3
PM10: 6.51 μg/m3
Carbon Monoxide: 146.65 μg/m3
Nitrogen Dioxide: 3.21 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 93.4 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:34 PM
Sunset: 9:17 PM
Daylight: 15 hrs 25 mins
Moonrise: 4:53 PM
Moon Transit: 10:21 PM
Moonset: 3:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

10:17 AM - 12:47 AM
12:00 AM - 12:00 AM

Minor Periods

4:23 PM - 5:53 PM
2:53 AM - 4:23 AM

Action Rating: 2 out of 5

Wednesday, May 27, 2026

Weather Forecast

Sunny
63.3°F
44.5°F
53.3°F
73%
0 in
0%
0%
13.9 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 3.9 μg/m3
PM10: 4.1 μg/m3
Carbon Monoxide: 143.73 μg/m3
Nitrogen Dioxide: 3.45 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 62.36 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:34 PM
Sunset: 9:18 PM
Daylight: 15 hrs 26 mins
Moonrise: 6:01 PM
Moon Transit: 11:04 PM
Moonset: 3:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

10:59 AM - 1:29 PM
12:00 AM - 12:00 AM

Minor Periods

5:31 PM - 7:01 PM
3:10 AM - 4:40 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Sunny
62.5°F
41.9°F
51.3°F
73%
0 in
0%
0%
11.2 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 2.98 μg/m3
PM10: 3.24 μg/m3
Carbon Monoxide: 130.66 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:34 PM
Sunset: 9:19 PM
Daylight: 15 hrs 28 mins
Moonrise: 7:09 PM
Moon Transit: 11:49 PM
Moonset: 3:58 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

11:42 AM - 2:12 PM
12:00 AM - 12:00 AM

Minor Periods

6:39 PM - 8:09 PM
3:28 AM - 4:58 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Patchy rain nearby
59.6°F
42.7°F
51.2°F
66%
0.04 in
88%
0%
13.4 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 4.89 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 135.87 μg/m3
Nitrogen Dioxide: 4.81 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 47.54 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:34 PM
Sunset: 9:20 PM
Daylight: 15 hrs 30 mins
Moonrise: 8:18 PM
Moon Transit: 12:00 AM
Moonset: 4:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:28 AM - 2:58 PM

Minor Periods

7:48 PM - 9:18 PM
3:51 AM - 5:21 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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