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

Current Water Temperature

70.5°F

Measurement Time: Wednesday, July 15, 2026, 6:00 AM EDT

Temperature Locations

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Local Points of Interest

Ashmun Bay; Whitefish Island; St. Mary's Island; Soo Locks; Sault Sainte Marie

St. Marys River

Station Name: S.W. Pier, St. Marys River
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 597 feet

Sensor Depth: -4 feet

Nearest Address:
Point West Dr
Sault Ste. Marie, MI 49783
Chippewa County

GPS Coordinates: 46.501111, -84.372611

Nearby Water Temperatures

St. Marys River, Sault Ste. Marie, MI (3.5 mi)
St. Marys River, Barbeau, MI (16.8 mi)
St. Marys River, Barbeau, MI (18.5 mi)
Lake Huron, De Tour Village, MI (41.8 mi)
Straits of Mackinac, Mackinaw City, MI (50.5 mi)
Lake Huron, Bois Blanc Island, MI (51.6 mi)
Seul Choix Bay, Port Inland, MI (80.5 mi)
Little Traverse Bay, Petoskey, MI (83.1 mi)
Miners River, Munising, MI (103.1 mi)
Lake Huron, Alpena, MI (108.3 mi)
Thunder Bay River, Alpena, MI (109.3 mi)
Lake Huron, Alpena, MI (117.3 mi)
North Branch Au Sable River, Grayling, MI (123.3 mi)
Au Sable River, Luzerne, MI (126.1 mi)
Lake Michigan, Leland, MI (126.3 mi)

Weather for Sault Ste. Marie, Michigan

Current Weather

64°F
Mist
Mist
64°F
60.3°F
81%
NW 5.8 mph
12.2 mph
60.3°F
57.2°F
0 in
100%
2 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 82°F
L: 59°F
Sunny
Thu
H: 71°F
L: 53°F
Sunny
Fri
H: 80°F
L: 51°F
Patchy rain nearby
Sat
H: 66°F
L: 54°F
Sunny
Sun
H: 79°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 6 μg/m3
Carbon Monoxide: 120 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:43 PM
Sunset: 9:27 PM
Daylight: 15 hrs 27 mins
Moonrise: 7:16 AM
Moon Transit: 3:04 PM
Moonset: 10:35 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
2:34 PM - 5:04 PM

Minor Periods

10:05 PM - 11:35 PM
6:46 AM - 8:16 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 15 at 2:52AM EDT until July 16 at 12:00AM EDT by NWS Gaylord MI

Effective: Wed July 15, 2026, 2:52 AM
Expires: Wed July 15, 2026, 11:00 AM

* WHAT...Highest gusts up to 25 kts from the northwest and highest waves around 3 feet expected. * WHERE...St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island and Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary. * WHEN...From 5 PM this afternoon to midnight EDT tonight. * IMPACTS...Conditions will be hazardous to small craft.

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


Wednesday, July 15, 2026

Weather Forecast

Sunny
82°F
58.6°F
66.6°F
73%
0 in
7%
0%
11.6 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 7.86 μg/m3
PM10: 8.03 μg/m3
Carbon Monoxide: 132 μg/m3
Nitrogen Dioxide: 2.85 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 85.04 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:43 PM
Sunset: 9:27 PM
Daylight: 15 hrs 27 mins
Moonrise: 7:16 AM
Moon Transit: 3:04 PM
Moonset: 10:35 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
2:34 PM - 5:04 PM

Minor Periods

10:05 PM - 11:35 PM
6:46 AM - 8:16 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
70.9°F
52.8°F
61.3°F
68%
0 in
6%
0%
12.3 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 7.68 μg/m3
PM10: 7.81 μg/m3
Carbon Monoxide: 157.58 μg/m3
Nitrogen Dioxide: 2.28 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 75.96 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:43 PM
Sunset: 9:26 PM
Daylight: 15 hrs 25 mins
Moonrise: 8:41 AM
Moon Transit: 3:58 PM
Moonset: 10:58 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
3:28 PM - 5:58 PM

Minor Periods

10:28 PM - 11:58 PM
8:11 AM - 9:41 AM

Action Rating: 4 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
79.6°F
51.2°F
62.4°F
68%
0.09 in
57%
0%
10.7 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 4.06 μg/m3
PM10: 4.24 μg/m3
Carbon Monoxide: 113.96 μg/m3
Nitrogen Dioxide: 2.44 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 69.17 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:43 PM
Sunset: 9:25 PM
Daylight: 15 hrs 23 mins
Moonrise: 10:01 AM
Moon Transit: 4:46 PM
Moonset: 11:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
4:16 PM - 6:46 PM

Minor Periods

12:00 AM - 12:00 AM
9:31 AM - 11:01 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Patchy rain nearby
65.5°F
54.1°F
59.7°F
95%
0.21 in
89%
0%
13.2 mph
2.5


Air Quality

AQI: 1 - Good
PM2.5: 6.44 μg/m3
PM10: 6.67 μg/m3
Carbon Monoxide: 126.44 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 84.42 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:43 PM
Sunset: 9:24 PM
Daylight: 15 hrs 21 mins
Moonrise: 11:16 AM
Moon Transit: 5:32 PM
Moonset: 12:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
5:02 PM - 7:32 PM

Minor Periods

10:46 AM - 12:16 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
79.1°F
54.4°F
62.3°F
81%
0 in
16%
0%
13.4 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 6.94 μg/m3
PM10: 7.1 μg/m3
Carbon Monoxide: 173.33 μg/m3
Nitrogen Dioxide: 2.27 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 56.67 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:43 PM
Sunset: 9:23 PM
Daylight: 15 hrs 19 mins
Moonrise: 12:29 AM
Moon Transit: 6:15 PM
Moonset: 12:33 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
5:45 PM - 8:15 PM

Minor Periods

11:59 AM - 1:29 PM
12:00 AM - 12:00 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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