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

Current Water Temperature

54.0°F

Measurement Time: Tuesday, June 30, 2026, 9:06 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

70°F
Partly cloudy
Partly cloudy
70°F
79.2°F
90%
S 7.4 mph
12.5 mph
75°F
72°F
0 in
75%
8 mi
1011 mbar
0.6

Five Day Weather Forecast

Sunny
Tue
H: 88°F
L: 64°F
Light rain shower
Wed
H: 84°F
L: 62°F
Patchy rain nearby
Thu
H: 75°F
L: 61°F
Sunny
Fri
H: 87°F
L: 60°F
Light rain shower
Sat
H: 68°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 6.6 μg/m3
Carbon Monoxide: 125 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 76 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:40 PM
Sunset: 9:34 PM
Daylight: 15 hrs 46 mins
Moonrise: 10:34 PM
Moon Transit: 1:54 AM
Moonset: 5:54 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
2:36 PM - 5:06 PM

Minor Periods

10:04 PM - 11:34 PM
5:24 AM - 6:54 AM

Action Rating: 4 out of 5

Marine Weather Statement issued June 30 at 2:30AM EDT by NWS Gaylord MI

Effective: Tue June 30, 2026, 2:30 AM
Expires: Tue June 30, 2026, 8:30 AM

A significant meteotsunami/seiche is ongoing on the St Mary's River, with a rise fall magnitude of ~4.0 ft over the last several hours. At least another significant water level fall and rise is expected between 2:30 AM and 6:30 AM. Largest changes in water levels...up to 3 feet or more...can be expected on upper portions of the river from Point Iroquois to the locks at Sault Ste. Marie. Water level changes up to one foot can be expected from below the Soo Locks to Munuscong Lake. Mariners should be aware of rapidly rising and falling water levels...particularly for operators above the Soo Locks. Be sure to monitor marine radio for information on this situation.


squall warning in effect

Effective: Tue June 30, 2026, 1:44 AM
Expires: Tue June 30, 2026, 5:43 AM

Squalls with wind gusts up to 35 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. A large area of thunderstorms is tracking east over northern Lake Huron at 35 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.


squall warning in effect

Effective: Tue June 30, 2026, 1:44 AM
Expires: Tue June 30, 2026, 5:43 AM

Squalls with wind gusts up to 35 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
Tuesday, June 30, 2026

Weather Forecast

Sunny
88°F
64.4°F
74.3°F
90%
0.74 in
84%
0%
11.9 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 4.86 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 132.88 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 92 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:40 PM
Sunset: 9:34 PM
Daylight: 15 hrs 46 mins
Moonrise: 10:34 PM
Moon Transit: 1:54 AM
Moonset: 5:54 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
2:36 PM - 5:06 PM

Minor Periods

10:04 PM - 11:34 PM
5:24 AM - 6:54 AM

Action Rating: 4 out of 5

Wednesday, July 1, 2026

Weather Forecast

Light rain shower
84°F
62°F
71.4°F
82%
0.53 in
82%
0%
10.7 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 8.69 μg/m3
Carbon Monoxide: 126.21 μg/m3
Nitrogen Dioxide: 2.31 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 91.67 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:41 PM
Sunset: 9:33 PM
Daylight: 15 hrs 45 mins
Moonrise: 11:02 PM
Moon Transit: 2:43 AM
Moonset: 7:00 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

2:13 AM - 4:43 AM
3:25 PM - 5:55 PM

Minor Periods

12:00 AM - 12:00 AM
6:30 AM - 8:00 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Patchy rain nearby
75°F
61.1°F
69.2°F
87%
0.29 in
83%
0%
9.4 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 5 μg/m3
PM10: 6.1 μg/m3
Carbon Monoxide: 130.13 μg/m3
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 90.29 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:41 PM
Sunset: 9:33 PM
Daylight: 15 hrs 44 mins
Moonrise: 12:02 AM
Moon Transit: 3:31 AM
Moonset: 8:09 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

3:01 AM - 5:31 AM
4:11 PM - 6:41 PM

Minor Periods

7:39 AM - 9:09 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
86.6°F
60°F
72.2°F
76%
0.3 in
70%
0%
10.7 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 5.1 μg/m3
PM10: 5.3 μg/m3
Carbon Monoxide: 132.76 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 73.17 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:41 PM
Sunset: 9:33 PM
Daylight: 15 hrs 43 mins
Moonrise: 12:25 AM
Moon Transit: 4:17 AM
Moonset: 9:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
4:56 PM - 7:26 PM

Minor Periods

8:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Light rain shower
67.7°F
52.1°F
61°F
88%
0.16 in
80%
0%
12.8 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 2.34 μg/m3
PM10: 2.39 μg/m3
Carbon Monoxide: 170.78 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 59.67 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:41 PM
Sunset: 9:33 PM
Daylight: 15 hrs 42 mins
Moonrise: 12:45 AM
Moon Transit: 5:00 AM
Moonset: 10:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
5:39 PM - 8:09 PM

Minor Periods

9:58 AM - 11:28 AM
12:00 AM - 12:00 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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