Water Temperature of the Au Sable River in South Branch, MI

Current Water Temperature

72.0°F

Measurement Time: Saturday, August 23, 2025, 3:45 AM EDT

Temperature Locations

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Local Points of Interest

Loud Dam Pond

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Au Sable River

Station Name: AU SABLE RIVER NEAR SOUTH BRANCH, MI
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 722 feet / 220 meters

Nearest Address:
4980 Loud Dam Rd
South Branch, MI 48737
Iosco County

GPS Coordinates: 44.46334886, -83.7213714

Nearby Water Temperatures

Au Sable River, Glennie, MI (2.4 mi)
Au Sable River, Oscoda, MI (7.4 mi)
Au Sable River, Glennie, MI (7.8 mi)
Au Sable River, Curran, MI (11.8 mi)
Au Sable River, Oscoda, MI (14.3 mi)
Au Sable River, Mio, MI (24.3 mi)
Rifle River, Sterling, MI (30.8 mi)
Au Sable River, Luzerne, MI (31.7 mi)
South Branch Au Sable River, Grayling, MI (37.6 mi)
North Branch Au Sable River, Grayling, MI (38.6 mi)
Lake Huron, Alpena, MI (42.5 mi)
Thunder Bay River, Alpena, MI (43.8 mi)
Manistee River, Grayling, MI (57.6 mi)
Lake Huron, Port Austin, MI (65.7 mi)
Tittabawassee River, Freeland, MI (67.9 mi)

Weather for South Branch, Michigan

Current Weather

68.4°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 83%
Feels Like: 68.4°F
Wind: SW 8.7 mph
Wind Gusts: 12.2 mph
Pressure: 29.82 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 1

Five Day Weather Forecast

Moderate rain
Sat
H: 81°F
L: 65°F
Fog
Sun
H: 71°F
L: 53°F
Cloudy
Mon
H: 64°F
L: 56°F
Partly Cloudy
Tue
H: 70°F
L: 46°F
Sunny
Wed
H: 77°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 7.59 μg/m3
PM10: 7.96 μg/m3
Carbon Monoxide: 286.75 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:37 PM
Sunset: 8:27 PM
Daylight: 13 hrs 39 mins
Moonrise: 7:03 AM
Moon Transit: 2:01 PM
Moonset: 8:46 PM
Moon Phase: New
Moon Illumination: 1.4%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
1:31 PM - 4:01 PM

Minor Periods

8:16 PM - 9:46 PM
6:33 AM - 8:03 AM

Action Rating: 5 out of 5

Saturday, August 23, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 71.1°F
Average Humidity: 72%
Chance of Rain: 89%
Wind: 14.8 mph
UV Index: 1.8

Air Quality

AQI: 1 - Good
PM2.5: 9.09 μg/m3
PM10: 9.4 μg/m3
Carbon Monoxide: 318.05 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 82.84 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:37 PM
Sunset: 8:27 PM
Daylight: 13 hrs 39 mins
Moonrise: 7:03 AM
Moon Transit: 2:01 PM
Moonset: 8:46 PM
Moon Phase: New
Moon Illumination: 1.4%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
1:31 PM - 4:01 PM

Minor Periods

8:16 PM - 9:46 PM
6:33 AM - 8:03 AM

Action Rating: 5 out of 5

Sunday, August 24, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 62.2°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 3.5 μg/m3
PM10: 3.54 μg/m3
Carbon Monoxide: 279.94 μg/m3
Nitrogen Dioxide: 3.42 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 63.12 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:37 PM
Sunset: 8:25 PM
Daylight: 13 hrs 36 mins
Moonrise: 8:13 AM
Moon Transit: 2:44 PM
Moonset: 9:03 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

2:44 AM - 5:14 AM
2:14 PM - 4:44 PM

Minor Periods

8:33 PM - 10:03 PM
7:43 AM - 9:13 AM

Action Rating: 4 out of 5

Monday, August 25, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 59.7°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 13.4 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 2.41 μg/m3
PM10: 2.43 μg/m3
Carbon Monoxide: 258.56 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 58.48 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:36 PM
Sunset: 8:23 PM
Daylight: 13 hrs 33 mins
Moonrise: 9:19 AM
Moon Transit: 3:25 PM
Moonset: 9:20 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

3:26 AM - 5:56 AM
2:55 PM - 5:25 PM

Minor Periods

8:50 PM - 10:20 PM
8:49 AM - 10:19 AM

Action Rating: 4 out of 5

Tuesday, August 26, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 58.6°F
Average Humidity: 54%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 3.96 μg/m3
PM10: 4.06 μg/m3
Carbon Monoxide: 262.03 μg/m3
Nitrogen Dioxide: 2.49 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 65.92 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:36 PM
Sunset: 8:22 PM
Daylight: 13 hrs 30 mins
Moonrise: 10:25 AM
Moon Transit: 4:06 PM
Moonset: 9:36 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
3:36 PM - 6:06 PM

Minor Periods

9:06 PM - 10:36 PM
9:55 AM - 11:25 AM

Action Rating: 3 out of 5

Wednesday, August 27, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 61.2°F
Average Humidity: 52%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 5.24 μg/m3
PM10: 5.34 μg/m3
Carbon Monoxide: 298.42 μg/m3
Nitrogen Dioxide: 5.68 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 55.46 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:36 PM
Sunset: 8:20 PM
Daylight: 13 hrs 27 mins
Moonrise: 11:30 AM
Moon Transit: 4:47 PM
Moonset: 9:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
4:17 PM - 6:47 PM

Minor Periods

9:25 PM - 10:55 PM
11:00 AM - 12:30 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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