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

Current Water Temperature

42.1°F

Measurement Time: Saturday, May 23, 2026, 7:30 AM EDT

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

54°F
Sunny
Sunny
50.2°F
50.5°F
45%
ESE 12.8 mph
22.1 mph
46.8°F
31.7°F
0 in
0%
9 mi
1022 mbar
0.2

Five Day Weather Forecast

Sunny
Sat
H: 65°F
L: 45°F
Patchy rain nearby
Sun
H: 57°F
L: 46°F
Partly Cloudy
Mon
H: 73°F
L: 44°F
Patchy rain nearby
Tue
H: 73°F
L: 49°F
Sunny
Wed
H: 73°F
L: 48°F

Air Quality

AQI: 1 - Good
PM2.5: 1.55 μg/m3
PM10: 1.55 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:34 PM
Sunset: 9:14 PM
Daylight: 15 hrs 19 mins
Moonrise: 1:23 PM
Moon Transit: 8:14 PM
Moonset: 2:33 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

8:08 AM - 10:38 AM
7:44 PM - 10:14 PM

Minor Periods

12:53 AM - 2:23 PM
2:03 AM - 3:33 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued May 22 at 1:21PM EDT until May 23 at 11:00PM EDT by NWS Gaylord MI

Effective: Fri May 22, 2026, 1:21 PM
Expires: Sat May 23, 2026, 7:00 AM

* WHAT...Dangerous swimming conditions due to 4 to 8 foot waves and rip currents. * WHERE...Cheboygan, Presque Isle, Alpena, Alcona, Iosco, Arenac, Southeast Chippewa and Eastern Mackinac Counties, and Mackinac Island/Bois Blanc Island. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

Remain out of the water to avoid hazardous swimming conditions.


Beach Hazards Statement issued May 22 at 10:28PM EDT until May 23 at 11:00PM EDT by NWS Gaylord MI

Effective: Fri May 22, 2026, 10:28 PM
Expires: Sat May 23, 2026, 6:30 AM

* WHAT...Dangerous swimming conditions due to 4 to 8 foot waves and rip currents. * WHERE...Cheboygan, Presque Isle, Alpena, Alcona, Iosco, Arenac, Southeast Chippewa and Eastern Mackinac Counties, and Mackinac Island/Bois Blanc Island. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

Remain out of the water to avoid hazardous swimming conditions.
Saturday, May 23, 2026

Weather Forecast

Sunny
65.1°F
44.8°F
53.9°F
56%
0 in
0%
0%
18.3 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 2.54 μg/m3
PM10: 2.72 μg/m3
Carbon Monoxide: 131.41 μg/m3
Nitrogen Dioxide: 2.43 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 78.44 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:34 PM
Sunset: 9:14 PM
Daylight: 15 hrs 19 mins
Moonrise: 1:23 PM
Moon Transit: 8:14 PM
Moonset: 2:33 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

8:08 AM - 10:38 AM
7:44 PM - 10:14 PM

Minor Periods

12:53 AM - 2:23 PM
2:03 AM - 3:33 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
56.6°F
45.9°F
50.5°F
85%
0.01 in
87%
0%
12.5 mph
3.6


Air Quality

AQI: 1 - Good
PM2.5: 2.09 μg/m3
PM10: 2.12 μg/m3
Carbon Monoxide: 137.45 μg/m3
Nitrogen Dioxide: 3.08 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 70.88 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:34 PM
Sunset: 9:15 PM
Daylight: 15 hrs 21 mins
Moonrise: 2:35 PM
Moon Transit: 8:57 PM
Moonset: 2:51 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

8:53 AM - 11:23 AM
8:27 PM - 10:57 PM

Minor Periods

2:05 PM - 3:35 PM
2:21 AM - 3:51 AM

Action Rating: 2 out of 5

Monday, May 25, 2026

Weather Forecast

Partly Cloudy
72.5°F
44.1°F
57.2°F
79%
0 in
0%
0%
9.4 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 6.75 μg/m3
PM10: 7.12 μg/m3
Carbon Monoxide: 152.81 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 73.64 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: 9:39 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
9:09 PM - 11:39 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
73°F
48.8°F
59.4°F
82%
0.01 in
89%
0%
8.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 8.57 μg/m3
Carbon Monoxide: 158.46 μg/m3
Nitrogen Dioxide: 3.72 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 83.52 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
72.5°F
47.7°F
58°F
78%
0 in
0%
0%
6.9 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.56 μg/m3
Carbon Monoxide: 165 μg/m3
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 55.54 μg/m3

Astronomical

Sunrise: 5:51 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: 3:39 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
3:09 AM - 4:39 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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