Water Temperature of the St. Marys River in Sault Ste. Marie, MI
Current Water Temperature
43.5°F
Measurement Time: Wednesday, May 21, 2025, 10:42 AM EDT
Temperature Locations
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Local Points of Interest
Rotary Park; Rotary Island; Steers Island; Island Number One; Sault Sainte MarieSponsored Content
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
51.1°F

Conditions: Partly Cloudy
Humidity: 54%
Feels Like: 47.1°F
Wind: NE 10.7 mph
Wind Gusts: 12.3 mph
Humidity: 54%
Feels Like: 47.1°F
Wind: NE 10.7 mph
Wind Gusts: 12.3 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 2.9
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 2.9
Five Day Weather Forecast

Wed
H: 52°F
L: 38°F

Thu
H: 53°F
L: 40°F

Fri
H: 59°F
L: 37°F

Sat
H: 64°F
L: 42°F

Sun
H: 61°F
L: 42°F
Air Quality
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sunrise: 5:57 AM
Sun Transit: 1:33 PM
Sunset: 9:12 PM
Daylight: 15 hrs 15 mins
Sun Transit: 1:33 PM
Sunset: 9:12 PM
Daylight: 15 hrs 15 mins
Moonrise: 3:09 AM
Moon Transit: 8:41 AM
Moonset: 2:27 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Moon Transit: 8:41 AM
Moonset: 2:27 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
8:11 AM - 10:41 AM9:21 PM - 11:51 PM
Minor Periods
1:57 PM - 3:27 PM2:39 AM - 4:09 AM
Action Rating: 3 out of 5
Wednesday, May 21, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 46°F
Average Humidity: 64%
Average Temperature: 46°F
Average Humidity: 64%
Chance of Rain: 86%
Wind: 11.2 mph
UV Index: 1.2
Wind: 11.2 mph
UV Index: 1.2
Air Quality
AQI:
1 - Good
PM2.5:
0.78 μg/m3
PM10:
0.9 μg/m3
Carbon Monoxide: 232.88 μg/m3
Nitrogen Dioxide: 1.39 μg/m3
Sulphur Dioxide: 0.15 μg/m3
Ozone: 65.15 μg/m3
Nitrogen Dioxide: 1.39 μg/m3
Sulphur Dioxide: 0.15 μg/m3
Ozone: 65.15 μg/m3
Astronomical
Sunrise: 5:57 AM
Sun Transit: 1:33 PM
Sunset: 9:12 PM
Daylight: 15 hrs 15 mins
Sun Transit: 1:33 PM
Sunset: 9:12 PM
Daylight: 15 hrs 15 mins
Moonrise: 3:09 AM
Moon Transit: 8:41 AM
Moonset: 2:27 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Moon Transit: 8:41 AM
Moonset: 2:27 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
8:11 AM - 10:41 AM9:21 PM - 11:51 PM
Minor Periods
1:57 PM - 3:27 PM2:39 AM - 4:09 AM
Action Rating: 3 out of 5
Thursday, May 22, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 45.3°F
Average Humidity: 83%
Average Temperature: 45.3°F
Average Humidity: 83%
Chance of Rain: 88%
Wind: 8.5 mph
UV Index: 0
Wind: 8.5 mph
UV Index: 0
Air Quality
AQI:
0 -
PM2.5:
0 μg/m3
PM10:
0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sunrise: 5:56 AM
Sun Transit: 1:33 PM
Sunset: 9:13 PM
Daylight: 15 hrs 17 mins
Sun Transit: 1:33 PM
Sunset: 9:13 PM
Daylight: 15 hrs 17 mins
Moonrise: 3:27 AM
Moon Transit: 12:46 AM
Moonset: 3:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.9%
Moon Transit: 12:46 AM
Moonset: 3:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
12:16 AM - 2:46 PM12:16 AM - 2:46 PM
Minor Periods
3:15 PM - 4:45 PM2:57 AM - 4:27 AM
Action Rating: 2 out of 5
Friday, May 23, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 48.4°F
Average Humidity: 64%
Average Temperature: 48.4°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 3
Wind: 7.6 mph
UV Index: 3
Air Quality
AQI:
0 -
PM2.5:
0 μg/m3
PM10:
0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sunrise: 5:55 AM
Sun Transit: 1:34 PM
Sunset: 9:14 PM
Daylight: 15 hrs 19 mins
Sun Transit: 1:34 PM
Sunset: 9:14 PM
Daylight: 15 hrs 19 mins
Moonrise: 3:45 AM
Moon Transit: 10:17 AM
Moonset: 5:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.0%
Moon Transit: 10:17 AM
Moonset: 5:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:47 AM - 12:17 AM
Minor Periods
4:37 PM - 6:07 PM3:15 AM - 4:45 AM
Action Rating: 2 out of 5
Saturday, May 24, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 52.4°F
Average Humidity: 64%
Average Temperature: 52.4°F
Average Humidity: 64%
Chance of Rain: 88%
Wind: 6.7 mph
UV Index: 3
Wind: 6.7 mph
UV Index: 3
Air Quality
AQI:
0 -
PM2.5:
0 μg/m3
PM10:
0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sunrise: 5:54 AM
Sun Transit: 1:34 PM
Sunset: 9:15 PM
Daylight: 15 hrs 21 mins
Sun Transit: 1:34 PM
Sunset: 9:15 PM
Daylight: 15 hrs 21 mins
Moonrise: 4:05 AM
Moon Transit: 11:09 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.4%
Moon Transit: 11:09 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:39 AM - 1:09 PM
Minor Periods
6:02 PM - 7:32 PM3:35 AM - 5:05 AM
Action Rating: 2 out of 5
Sunday, May 25, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 51.5°F
Average Humidity: 73%
Average Temperature: 51.5°F
Average Humidity: 73%
Chance of Rain: 79%
Wind: 6 mph
UV Index: 3
Wind: 6 mph
UV Index: 3
Air Quality
AQI:
0 -
PM2.5:
0 μg/m3
PM10:
0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sunrise: 5:53 AM
Sun Transit: 1:34 PM
Sunset: 9:16 PM
Daylight: 15 hrs 23 mins
Sun Transit: 1:34 PM
Sunset: 9:16 PM
Daylight: 15 hrs 23 mins
Moonrise: 4:29 AM
Moon Transit: 12:04 AM
Moonset: 8:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%
Moon Transit: 12:04 AM
Moonset: 8:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:34 AM - 2:04 PM
Minor Periods
7:30 PM - 9:00 PM3:59 AM - 5:29 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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