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

Current Water Temperature

58.6°F

Measurement Time: Wednesday, October 7, 2026, 2:12 PM 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

61°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 51%
Feels Like: 52.3°F
Wind: WNW 12.5 mph
Wind Gusts: 23.1 mph
Pressure: 29.67 in
Precipitation: 0 in
Cloud Cover: 49%
Visibility: 6 mi
UV Index: 3.1

Weather Forecast

Sunny
Wed
H: 62°F
L: 47°F
Patchy rain nearby
Thu
H: 55°F
L: 45°F
Partly Cloudy
Fri
H: 61°F
L: 42°F
Overcast
Sat
H: 79°F
L: 49°F
Overcast
Sun
H: 74°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 0.6 μg/m3
PM10: 0.7 μg/m3
Carbon Monoxide: 114 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 1:24 PM
Sunset: 7:05 PM
Daylight: 11 hrs 21 mins
Moonrise: 4:10 AM
Moon Transit: 11:05 AM
Moonset: 5:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:35 AM - 1:05 PM

Minor Periods

5:15 PM - 6:45 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Small Craft Advisory issued October 7 at 9:02AM EDT until October 8 at 2:00PM EDT by NWS Gaylord MI

Effective: Wed October 7, 2026, 9:02 AM
Expires: Wed October 7, 2026, 5:15 PM

* WHAT...Highest gusts up to 25 kts from the northwest and highest waves around 8 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI. * WHEN...From 2 PM this afternoon to 2 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued October 7 at 7:01AM EDT until October 8 at 2:00PM EDT by NWS Gaylord MI

Effective: Wed October 7, 2026, 7:01 AM
Expires: Wed October 7, 2026, 3:15 PM

* WHAT...Highest gusts up to 25 kts from the northwest and highest waves around 8 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI. * WHEN...From 2 PM this afternoon to 2 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 55.6°F
Average Humidity: 77%
Chance of Rain: 57%
Wind: 14.1 mph
UV Index: 3.1

Air Quality

AQI: 1 - Good
PM2.5: 1.51 μg/m3
PM10: 1.55 μg/m3
Carbon Monoxide: 126.33 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 73.46 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 1:24 PM
Sunset: 7:05 PM
Daylight: 11 hrs 21 mins
Moonrise: 4:10 AM
Moon Transit: 11:05 AM
Moonset: 5:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:35 AM - 1:05 PM

Minor Periods

5:15 PM - 6:45 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 49.9°F
Average Humidity: 68%
Chance of Rain: 57%
Wind: 16.6 mph
UV Index: 3

Air Quality

AQI: 1 - Good
PM2.5: 0.52 μg/m3
PM10: 0.55 μg/m3
Carbon Monoxide: 117.67 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 69.54 μg/m3

Astronomical

Sunrise: 7:45 AM
Sun Transit: 1:24 PM
Sunset: 7:03 PM
Daylight: 11 hrs 18 mins
Moonrise: 5:25 AM
Moon Transit: 11:51 AM
Moonset: 6:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:21 AM - 1:51 PM

Minor Periods

5:33 PM - 7:03 PM
4:55 AM - 6:25 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 50.5°F
Average Humidity: 63%
Chance of Rain: 17%
Wind: 9.4 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 1.97 μg/m3
PM10: 2.45 μg/m3
Carbon Monoxide: 138.58 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 60.46 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 1:24 PM
Sunset: 7:01 PM
Daylight: 11 hrs 15 mins
Moonrise: 6:40 AM
Moon Transit: 12:36 AM
Moonset: 6:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
12:06 AM - 2:36 PM

Minor Periods

5:50 PM - 7:20 PM
6:10 AM - 7:40 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 63.9°F
Average Humidity: 61%
Chance of Rain: 17%
Wind: 13.6 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 4.92 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 150.8 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 73.54 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 1:24 PM
Sunset: 7:00 PM
Daylight: 11 hrs 12 mins
Moonrise: 7:52 AM
Moon Transit: 1:20 PM
Moonset: 6:38 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
12:50 AM - 3:20 PM

Minor Periods

6:08 PM - 7:38 PM
7:22 AM - 8:52 AM

Action Rating: 4 out of 5

Sunday, October 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 66°F
Average Humidity: 61%
Chance of Rain: 9%
Wind: 12.8 mph
UV Index: 6

Air Quality

AQI: 1 - Good
PM2.5: 7.77 μg/m3
PM10: 7.96 μg/m3
Carbon Monoxide: 223.89 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 114 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 1:23 PM
Sunset: 6:58 PM
Daylight: 11 hrs 9 mins
Moonrise: 9:04 AM
Moon Transit: 2:06 PM
Moonset: 6:59 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
1:36 PM - 4:06 PM

Minor Periods

6:29 PM - 7:59 PM
8:34 AM - 10:04 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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