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

Current Water Temperature

63.0°F

Measurement Time: Friday, September 12, 2025, 5:45 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

68.5°F
Mist
Conditions: Mist
Humidity: 73%
Feels Like: 68.5°F
Wind: S 4 mph
Wind Gusts: 4.6 mph
Pressure: 30.26 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 9 mi
UV Index: 3.2

Five Day Weather Forecast

Mist
Fri
H: 77°F
L: 55°F
Heavy rain
Sat
H: 63°F
L: 59°F
Fog
Sun
H: 64°F
L: 55°F
Sunny
Mon
H: 79°F
L: 50°F
Sunny
Tue
H: 84°F
L: 54°F

Air Quality

AQI: 2 - Moderate
PM2.5: 11.29 μg/m3
PM10: 11.47 μg/m3
Carbon Monoxide: 368.15 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 5.18 μg/m3
Ozone: 143 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 1:31 PM
Sunset: 7:50 PM
Daylight: 12 hrs 40 mins
Moonrise: 10:12 PM
Moon Transit: 5:24 AM
Moonset: 1:28 PM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
6:15 PM - 8:45 PM

Minor Periods

9:42 PM - 11:12 PM
12:58 AM - 2:28 PM

Action Rating: 3 out of 5

Friday, September 12, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 63.4°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 13.11 μg/m3
PM10: 13.48 μg/m3
Carbon Monoxide: 384.28 μg/m3
Nitrogen Dioxide: 5.29 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 105.68 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 1:31 PM
Sunset: 7:50 PM
Daylight: 12 hrs 40 mins
Moonrise: 10:12 PM
Moon Transit: 5:24 AM
Moonset: 1:28 PM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
6:15 PM - 8:45 PM

Minor Periods

9:42 PM - 11:12 PM
12:58 AM - 2:28 PM

Action Rating: 3 out of 5

Saturday, September 13, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 61.1°F
Average Humidity: 94%
Chance of Rain: 87%
Wind: 7.2 mph
UV Index: 1.3

Air Quality

AQI: 2 - Moderate
PM2.5: 18.31 μg/m3
PM10: 19.3 μg/m3
Carbon Monoxide: 407.89 μg/m3
Nitrogen Dioxide: 9.04 μg/m3
Sulphur Dioxide: 4.08 μg/m3
Ozone: 102.8 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 1:30 PM
Sunset: 7:48 PM
Daylight: 12 hrs 37 mins
Moonrise: 10:59 PM
Moon Transit: 6:23 AM
Moonset: 2:47 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:53 AM - 8:23 AM
7:16 PM - 9:46 PM

Minor Periods

10:29 PM - 11:59 PM
2:17 PM - 3:47 PM

Action Rating: 2 out of 5

Sunday, September 14, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 60.7°F
Average Humidity: 91%
Chance of Rain: 0%
Wind: 9.4 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 33.68 μg/m3
PM10: 36 μg/m3
Carbon Monoxide: 373.26 μg/m3
Nitrogen Dioxide: 8.95 μg/m3
Sulphur Dioxide: 3.8 μg/m3
Ozone: 106.68 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 1:30 PM
Sunset: 7:47 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:58 PM
Moon Transit: 7:25 AM
Moonset: 3:55 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
8:18 PM - 10:48 PM

Minor Periods

12:00 AM - 12:00 AM
3:25 PM - 4:55 PM

Action Rating: 3 out of 5

Monday, September 15, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63.3°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 7.2 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 18.7 μg/m3
PM10: 19.6 μg/m3
Carbon Monoxide: 344.03 μg/m3
Nitrogen Dioxide: 3.74 μg/m3
Sulphur Dioxide: 2.24 μg/m3
Ozone: 106.04 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 1:29 PM
Sunset: 7:45 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:58 AM
Moon Transit: 8:27 AM
Moonset: 4:51 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

7:57 AM - 10:27 AM
9:19 PM - 11:49 PM

Minor Periods

4:21 PM - 5:51 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, September 16, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 66.8°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 5

Air Quality

AQI: 2 - Moderate
PM2.5: 18.46 μg/m3
PM10: 19.24 μg/m3
Carbon Monoxide: 389.35 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 107.62 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 1:29 PM
Sunset: 7:43 PM
Daylight: 12 hrs 28 mins
Moonrise: 1:07 AM
Moon Transit: 9:26 AM
Moonset: 5:33 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
12:00 AM - 12:00 AM

Minor Periods

5:03 PM - 6:33 PM
12:37 AM - 2:07 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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