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

Current Water Temperature

40.8°F

Measurement Time: Saturday, May 16, 2026, 5:42 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

66°F
Sunny
Sunny
66°F
74.7°F
36%
NW 13.4 mph
19 mph
72.2°F
42.7°F
0 in
0%
9 mi
1007 mbar
3.2

Five Day Weather Forecast

Patchy rain nearby
Sat
H: 75°F
L: 48°F
Sunny
Sun
H: 62°F
L: 41°F
Moderate rain
Mon
H: 71°F
L: 49°F
Moderate rain
Tue
H: 63°F
L: 37°F
Cloudy
Wed
H: 44°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 4.35 μg/m3
Carbon Monoxide: 138.85 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:33 PM
Sunset: 9:06 PM
Daylight: 15 hrs 3 mins
Moonrise: 5:21 AM
Moon Transit: 1:21 PM
Moonset: 9:39 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

1:08 AM - 3:38 AM
12:51 AM - 3:21 PM

Minor Periods

9:09 PM - 10:39 PM
4:51 AM - 6:21 AM

Action Rating: 5 out of 5

Special Weather Statement issued May 16 at 3:27AM EDT by NWS Marquette MI

Effective: Sat May 16, 2026, 3:27 AM
Expires: Sat May 16, 2026, 8:00 PM

Gusty westerly winds as high as 25 mph, combined with dry and warm conditions will lead to elevated wildfire potential from late this morning into the early evening across the far eastern U.P. Winds will shift northwest this afternoon as secondary cold front pushes across the area. Avoid outdoor burning today. Immediately report any wildfires to local emergency services by calling 911. Burn restrictions remain in effect. For complete details, visit www.dnr.state.mi.us/burnpermits, or by calling 866-922-2876.


Saturday, May 16, 2026

Weather Forecast

Patchy rain nearby
75.2°F
48.4°F
59°F
65%
0.09 in
88%
0%
14.5 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 5.82 μg/m3
PM10: 6.07 μg/m3
Carbon Monoxide: 154.57 μg/m3
Nitrogen Dioxide: 3.04 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 95.2 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:33 PM
Sunset: 9:06 PM
Daylight: 15 hrs 3 mins
Moonrise: 5:21 AM
Moon Transit: 1:21 PM
Moonset: 9:39 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

1:08 AM - 3:38 AM
12:51 AM - 3:21 PM

Minor Periods

9:09 PM - 10:39 PM
4:51 AM - 6:21 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Sunny
61.5°F
40.6°F
51.8°F
66%
0 in
0%
0%
10.7 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 2.03 μg/m3
PM10: 2.06 μg/m3
Carbon Monoxide: 133.61 μg/m3
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 61.4 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:33 PM
Sunset: 9:07 PM
Daylight: 15 hrs 6 mins
Moonrise: 6:01 AM
Moon Transit: 2:26 PM
Moonset: 11:01 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:11 AM - 4:41 AM
1:56 PM - 4:26 PM

Minor Periods

12:00 AM - 12:00 AM
5:31 AM - 7:01 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Moderate rain
71.4°F
49.3°F
58.7°F
87%
0.24 in
87%
0%
15.2 mph
4.7


Air Quality

AQI: 1 - Good
PM2.5: 5.09 μg/m3
PM10: 5.66 μg/m3
Carbon Monoxide: 144.37 μg/m3
Nitrogen Dioxide: 2.81 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:33 PM
Sunset: 9:08 PM
Daylight: 15 hrs 8 mins
Moonrise: 6:56 AM
Moon Transit: 3:33 PM
Moonset: 12:01 AM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
3:03 PM - 5:33 PM

Minor Periods

6:26 AM - 7:56 AM
12:00 AM - 12:00 AM

Action Rating: 5 out of 5

Tuesday, May 19, 2026

Weather Forecast

Moderate rain
63.2°F
37.2°F
52.9°F
97%
0.48 in
81%
0%
15 mph
2.8


Air Quality

AQI: 1 - Good
PM2.5: 5.42 μg/m3
PM10: 5.78 μg/m3
Carbon Monoxide: 160.23 μg/m3
Nitrogen Dioxide: 3.74 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 75.8 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:33 PM
Sunset: 9:09 PM
Daylight: 15 hrs 10 mins
Moonrise: 8:05 AM
Moon Transit: 4:39 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

4:24 AM - 6:54 AM
4:09 PM - 6:39 PM

Minor Periods

7:35 AM - 9:05 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, May 20, 2026

Weather Forecast

Cloudy
43.9°F
33.1°F
38.3°F
74%
0 in
0%
0%
16.1 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 1.39 μg/m3
PM10: 1.41 μg/m3
Carbon Monoxide: 132.93 μg/m3
Nitrogen Dioxide: 2.52 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 64.92 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:33 PM
Sunset: 9:10 PM
Daylight: 15 hrs 12 mins
Moonrise: 9:24 AM
Moon Transit: 5:41 PM
Moonset: 1:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
5:11 PM - 7:41 PM

Minor Periods

8:54 AM - 10:24 AM
12:34 AM - 2:04 AM

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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