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

Current Water Temperature

61.2°F

Measurement Time: Friday, August 1, 2025, 8:00 AM EDT

Temperature Locations

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Local Points of Interest

Rotary Park; Rotary Island; Steers Island; Island Number One; Sault Sainte Marie

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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

54°F
Mist
Conditions: Mist
Humidity: 97%
Feels Like: 54.6°F
Wind: N 2.5 mph
Wind Gusts: 4.4 mph
Pressure: 30.36 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 8 mi
UV Index: 0.5

Five Day Weather Forecast

Partly Cloudy
Fri
H: 76°F
L: 48°F
Sunny
Sat
H: 79°F
L: 58°F
Sunny
Sun
H: 77°F
L: 56°F
Sunny
Mon
H: 81°F
L: 55°F
Sunny
Tue
H: 83°F
L: 58°F

Air Quality

AQI: 2 - Moderate
PM2.5: 36.08 μg/m3
PM10: 36.63 μg/m3
Carbon Monoxide: 440.3 μg/m3
Nitrogen Dioxide: 3.33 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:43 PM
Sunset: 9:08 PM
Daylight: 14 hrs 49 mins
Moonrise: 2:59 PM
Moon Transit: 7:38 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
7:08 PM - 9:38 PM

Minor Periods

2:29 PM - 3:59 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Air Quality Alert issued July 31 at 3:30PM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu July 31, 2025, 3:30 PM
Expires: Fri August 1, 2025, 3:30 PM

The Michigan Department of Environmental Quality has extended the Air Quality Advisory through Saturday August 2, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Eastern Mackinac, Alcona, Western Mackinac, Montmorency, Southeast Chippewa, Otsego, Antrim, Central Chippewa, Leelanau, Western Chippewa, Arenac, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires remains over the state this afternoon. While some improvement in air quality is possible tonight into early Friday, the improvement will be short lived as additional plumes of smoke drop into the area from the northwest through the end of the week. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.


Air Quality Alert issued July 31 at 10:45PM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu July 31, 2025, 10:45 PM
Expires: Sat August 2, 2025, 12:00 AM

The Michigan Department of Environmental Quality has extended the Air Quality Advisory through Saturday August 2, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Eastern Mackinac, Alcona, Western Mackinac, Montmorency, Southeast Chippewa, Otsego, Antrim, Central Chippewa, Leelanau, Western Chippewa, Arenac, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.


Air Quality Alert issued July 31 at 3:30PM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu July 31, 2025, 3:30 PM
Expires: Fri August 1, 2025, 3:30 PM

The Michigan Department of Environmental Quality has extended the Air Quality Advisory through Saturday August 2, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Eastern Mackinac, Alcona, Western Mackinac, Montmorency, Southeast Chippewa, Otsego, Antrim, Central Chippewa, Leelanau, Western Chippewa, Arenac, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires remains over the state this afternoon. While some improvement in air quality is possible tonight into early Friday, the improvement will be short lived as additional plumes of smoke drop into the area from the northwest through the end of the week. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.


Friday, August 1, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 61.1°F
Average Humidity: 72%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 40.09 μg/m3
PM10: 40.48 μg/m3
Carbon Monoxide: 393.83 μg/m3
Nitrogen Dioxide: 4.38 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 69.6 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:43 PM
Sunset: 9:08 PM
Daylight: 14 hrs 49 mins
Moonrise: 2:59 PM
Moon Transit: 7:38 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
7:08 PM - 9:38 PM

Minor Periods

2:29 PM - 3:59 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, August 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 67°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 1.4

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 59.61 μg/m3
PM10: 60.13 μg/m3
Carbon Monoxide: 449.99 μg/m3
Nitrogen Dioxide: 4.88 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 82.68 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:43 PM
Sunset: 9:06 PM
Daylight: 14 hrs 46 mins
Moonrise: 4:07 PM
Moon Transit: 8:24 PM
Moonset: 12:09 AM
Moon Phase: First Quarter
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

8:18 AM - 10:48 AM
7:54 PM - 10:24 PM

Minor Periods

3:37 PM - 5:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, August 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 65.8°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 9.4 mph
UV Index: 1.8

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 43.89 μg/m3
PM10: 44.22 μg/m3
Carbon Monoxide: 475.89 μg/m3
Nitrogen Dioxide: 5.9 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 93.6 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:43 PM
Sunset: 9:05 PM
Daylight: 14 hrs 44 mins
Moonrise: 5:14 PM
Moon Transit: 9:14 PM
Moonset: 12:36 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
8:44 PM - 11:14 PM

Minor Periods

4:44 PM - 6:14 PM
12:06 AM - 1:36 AM

Action Rating: 3 out of 5

Monday, August 4, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 67.7°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 4.7 mph
UV Index: 1.3

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 42.93 μg/m3
PM10: 43.32 μg/m3
Carbon Monoxide: 505.79 μg/m3
Nitrogen Dioxide: 8.84 μg/m3
Sulphur Dioxide: 2.82 μg/m3
Ozone: 88.92 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:43 PM
Sunset: 9:03 PM
Daylight: 14 hrs 41 mins
Moonrise: 6:18 PM
Moon Transit: 10:06 PM
Moonset: 1:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

9:57 AM - 12:27 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
12:40 AM - 2:10 AM

Action Rating: 2 out of 5

Tuesday, August 5, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0.1

Air Quality

AQI: 2 - Moderate
PM2.5: 34.87 μg/m3
PM10: 35.22 μg/m3
Carbon Monoxide: 544.9 μg/m3
Nitrogen Dioxide: 9.49 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 77.77 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:43 PM
Sunset: 9:02 PM
Daylight: 14 hrs 38 mins
Moonrise: 7:13 PM
Moon Transit: 11:01 PM
Moonset: 1:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

10:51 AM - 1:21 PM
12:00 AM - 12:00 AM

Minor Periods

6:43 PM - 8:13 PM
1:24 AM - 2:54 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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