Water Temperature of the Au Sable River in South Branch, MI
Current Water Temperature
54.3°F
Measurement Time: Wednesday, April 22, 2026, 10:45 PM EDT
Temperature Locations
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Local Points of Interest
Loud Dam PondAu Sable River
Station Name: AU SABLE RIVER NEAR SOUTH BRANCH, MI
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 722 feet
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
34.2°F

Clear
31.3°F
44.8°F
86%
ESE 3.4 mph
7 mph
43°F
20.6°F
0 in
0%
9 mi
1016 mbar
0
Five Day Weather Forecast

Thu
H: 74°F
L: 44°F

Fri
H: 55°F
L: 43°F

Sat
H: 60°F
L: 43°F

Sun
H: 55°F
L: 38°F

Mon
H: 60°F
L: 36°F
Air Quality
AQI:
1 - Good
PM2.5:
4.35 μg/m3
PM10:
4.45 μg/m3
Carbon Monoxide: 180.85 μg/m3
Nitrogen Dioxide: 3.45 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 93 μg/m3
Nitrogen Dioxide: 3.45 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 93 μg/m3
Astronomical
Sunrise: 6:38 AM
Sun Transit: 1:33 PM
Sunset: 8:30 PM
Daylight: 13 hrs 52 mins
Sun Transit: 1:33 PM
Sunset: 8:30 PM
Daylight: 13 hrs 52 mins
Moonrise: 11:48 AM
Moon Transit: 7:48 PM
Moonset: 2:58 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Moon Transit: 7:48 PM
Moonset: 2:58 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
7:42 AM - 10:12 AM7:18 PM - 9:48 PM
Minor Periods
11:18 AM - 12:48 AM2:28 AM - 3:58 AM
Action Rating: 2 out of 5
Thursday, April 23, 2026
Weather Forecast
Sunny
74.3°F
43.7°F
55.2°F
49%
0 in
0%
0%
9.8 mph
6.3
Air Quality
AQI:
1 - Good
PM2.5:
4.6 μg/m3
PM10:
5.02 μg/m3
Carbon Monoxide: 187.61 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 102.88 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 102.88 μg/m3
Astronomical
Sunrise: 6:38 AM
Sun Transit: 1:33 PM
Sunset: 8:30 PM
Daylight: 13 hrs 52 mins
Sun Transit: 1:33 PM
Sunset: 8:30 PM
Daylight: 13 hrs 52 mins
Moonrise: 11:48 AM
Moon Transit: 7:48 PM
Moonset: 2:58 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Moon Transit: 7:48 PM
Moonset: 2:58 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
7:42 AM - 10:12 AM7:18 PM - 9:48 PM
Minor Periods
11:18 AM - 12:48 AM2:28 AM - 3:58 AM
Action Rating: 2 out of 5
Friday, April 24, 2026
Weather Forecast
Moderate rain
54.6°F
43.1°F
48.5°F
82%
0.27 in
87%
0%
12.5 mph
5.7
Air Quality
AQI:
1 - Good
PM2.5:
14.25 μg/m3
PM10:
14.69 μg/m3
Carbon Monoxide: 201.09 μg/m3
Nitrogen Dioxide: 4.74 μg/m3
Sulphur Dioxide: 2.53 μg/m3
Ozone: 93.84 μg/m3
Nitrogen Dioxide: 4.74 μg/m3
Sulphur Dioxide: 2.53 μg/m3
Ozone: 93.84 μg/m3
Astronomical
Sunrise: 6:36 AM
Sun Transit: 1:33 PM
Sunset: 8:31 PM
Daylight: 13 hrs 55 mins
Sun Transit: 1:33 PM
Sunset: 8:31 PM
Daylight: 13 hrs 55 mins
Moonrise: 1:06 PM
Moon Transit: 8:40 PM
Moonset: 3:33 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%
Moon Transit: 8:40 PM
Moonset: 3:33 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%
Best Times for Fishing or Hunting
Major Periods
8:37 AM - 11:07 AM8:10 PM - 10:40 PM
Minor Periods
12:36 AM - 2:06 PM3:03 AM - 4:33 AM
Action Rating: 3 out of 5
Saturday, April 25, 2026
Weather Forecast
Partly Cloudy
60°F
42.5°F
49.2°F
77%
0 in
0%
0%
13.6 mph
5.7
Air Quality
AQI:
1 - Good
PM2.5:
6.71 μg/m3
PM10:
6.95 μg/m3
Carbon Monoxide: 170.77 μg/m3
Nitrogen Dioxide: 3.27 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 88.52 μg/m3
Nitrogen Dioxide: 3.27 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 88.52 μg/m3
Astronomical
Sunrise: 6:35 AM
Sun Transit: 1:32 PM
Sunset: 8:32 PM
Daylight: 13 hrs 58 mins
Sun Transit: 1:32 PM
Sunset: 8:32 PM
Daylight: 13 hrs 58 mins
Moonrise: 2:21 PM
Moon Transit: 9:28 PM
Moonset: 4:00 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%
Moon Transit: 9:28 PM
Moonset: 4:00 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%
Best Times for Fishing or Hunting
Major Periods
9:27 AM - 11:57 AM8:58 PM - 11:28 PM
Minor Periods
1:51 PM - 3:21 PM3:30 AM - 5:00 AM
Action Rating: 3 out of 5
Sunday, April 26, 2026
Weather Forecast
Cloudy
54.5°F
38.2°F
44.6°F
72%
0 in
0%
0%
10.1 mph
6
Air Quality
AQI:
1 - Good
PM2.5:
5.55 μg/m3
PM10:
5.99 μg/m3
Carbon Monoxide: 163.48 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 87.8 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 87.8 μg/m3
Astronomical
Sunrise: 6:33 AM
Sun Transit: 1:32 PM
Sunset: 8:34 PM
Daylight: 14 hrs mins
Sun Transit: 1:32 PM
Sunset: 8:34 PM
Daylight: 14 hrs mins
Moonrise: 3:32 PM
Moon Transit: 10:13 PM
Moonset: 4:22 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%
Moon Transit: 10:13 PM
Moonset: 4:22 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%
Best Times for Fishing or Hunting
Major Periods
10:13 AM - 12:43 AM12:00 AM - 12:00 AM
Minor Periods
3:02 PM - 4:32 PM3:52 AM - 5:22 AM
Action Rating: 2 out of 5
Monday, April 27, 2026
Weather Forecast
Sunny
60.2°F
35.8°F
46.1°F
71%
0 in
0%
0%
13 mph
0.4
Air Quality
AQI:
1 - Good
PM2.5:
11.95 μg/m3
PM10:
12.1 μg/m3
Carbon Monoxide: 201.47 μg/m3
Nitrogen Dioxide: 3.48 μg/m3
Sulphur Dioxide: 2.62 μg/m3
Ozone: 93.62 μg/m3
Nitrogen Dioxide: 3.48 μg/m3
Sulphur Dioxide: 2.62 μg/m3
Ozone: 93.62 μg/m3
Astronomical
Sunrise: 6:32 AM
Sun Transit: 1:32 PM
Sunset: 8:35 PM
Daylight: 14 hrs 3 mins
Sun Transit: 1:32 PM
Sunset: 8:35 PM
Daylight: 14 hrs 3 mins
Moonrise: 4:41 PM
Moon Transit: 10:55 PM
Moonset: 4:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%
Moon Transit: 10:55 PM
Moonset: 4:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%
Best Times for Fishing or Hunting
Major Periods
10:56 AM - 1:26 PM12:00 AM - 12:00 AM
Minor Periods
4:11 PM - 5:41 PM4:11 AM - 5:41 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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