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

Current Water Temperature

62.4°F

Measurement Time: Sunday, August 10, 2025, 3:24 PM EDT

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

78.1°F
Overcast
Conditions: Overcast
Humidity: 69%
Feels Like: 81.2°F
Wind: SSW 14.3 mph
Wind Gusts: 16.8 mph
Pressure: 30.03 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 6.2

Five Day Weather Forecast

Moderate rain
Sun
H: 83°F
L: 69°F
Heavy rain
Mon
H: 80°F
L: 65°F
Patchy rain nearby
Tue
H: 82°F
L: 69°F
Moderate rain
Wed
H: 65°F
L: 52°F
Sunny
Thu
H: 71°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 9.07 μg/m3
PM10: 9.25 μg/m3
Carbon Monoxide: 410.7 μg/m3
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 129 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:42 PM
Sunset: 8:55 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:44 PM
Moon Transit: 2:31 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
3:12 PM - 5:42 PM

Minor Periods

9:14 PM - 10:44 PM
7:20 AM - 8:50 AM

Action Rating: 4 out of 5

Sunday, August 10, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 74.5°F
Average Humidity: 90%
Chance of Rain: 86%
Wind: 15.2 mph
UV Index: 1.7

Air Quality

AQI: 1 - Good
PM2.5: 10.94 μg/m3
PM10: 11.26 μg/m3
Carbon Monoxide: 413.51 μg/m3
Nitrogen Dioxide: 4.97 μg/m3
Sulphur Dioxide: 2.43 μg/m3
Ozone: 126.32 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:42 PM
Sunset: 8:55 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:44 PM
Moon Transit: 2:31 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
3:12 PM - 5:42 PM

Minor Periods

9:14 PM - 10:44 PM
7:20 AM - 8:50 AM

Action Rating: 4 out of 5

Monday, August 11, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 73.6°F
Average Humidity: 92%
Chance of Rain: 89%
Wind: 9.2 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 9.04 μg/m3
Carbon Monoxide: 385.54 μg/m3
Nitrogen Dioxide: 4.63 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 118.32 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:42 PM
Sunset: 8:53 PM
Daylight: 14 hrs 22 mins
Moonrise: 10:02 PM
Moon Transit: 3:19 AM
Moonset: 9:08 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

2:49 AM - 5:19 AM
3:59 PM - 6:29 PM

Minor Periods

9:32 PM - 11:02 PM
8:38 AM - 10:08 AM

Action Rating: 2 out of 5

Tuesday, August 12, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 73.5°F
Average Humidity: 84%
Chance of Rain: 87%
Wind: 11.9 mph
UV Index: 1.3

Air Quality

AQI: 1 - Good
PM2.5: 7.58 μg/m3
PM10: 7.93 μg/m3
Carbon Monoxide: 444.15 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 104.72 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:42 PM
Sunset: 8:51 PM
Daylight: 14 hrs 19 mins
Moonrise: 10:19 PM
Moon Transit: 7:21 AM
Moonset: 10:27 AM
Moon Phase: Waning Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
6:51 AM - 9:21 AM

Minor Periods

9:49 PM - 11:19 PM
9:57 AM - 11:27 AM

Action Rating: 4 out of 5

Wednesday, August 13, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 61.1°F
Average Humidity: 79%
Chance of Rain: 88%
Wind: 14.3 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 21.9 μg/m3
PM10: 22.05 μg/m3
Carbon Monoxide: 415.73 μg/m3
Nitrogen Dioxide: 5.22 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 1:42 PM
Sunset: 8:50 PM
Daylight: 14 hrs 16 mins
Moonrise: 10:38 PM
Moon Transit: 12:00 AM
Moonset: 11:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
5:35 PM - 8:05 PM

Minor Periods

10:08 PM - 11:38 PM
11:15 AM - 12:45 AM

Action Rating: 2 out of 5

Thursday, August 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58.2°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.24 μg/m3
PM10: 4.26 μg/m3
Carbon Monoxide: 342.53 μg/m3
Nitrogen Dioxide: 5.11 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 1:41 PM
Sunset: 8:48 PM
Daylight: 14 hrs 13 mins
Moonrise: 11:00 PM
Moon Transit: 5:43 AM
Moonset: 1:06 PM
Moon Phase: Waning Gibbous
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
6:26 PM - 8:56 PM

Minor Periods

12:00 AM - 12:00 AM
12:36 AM - 2:06 PM

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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