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

Current Water Temperature

57.7°F

Measurement Time: Thursday, September 24, 2026, 12:30 PM EDT

Temperature Locations

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Local Points of Interest

Au Sable State Forest-Grayling Unit; Luzerne, MI

South Branch Au Sable River

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

Elevation Above Sea Level: 1,070 feet

Nearest Address:
7801 Old M-72
Grayling, MI 49738
Crawford County

GPS Coordinates: 44.61473849, -84.455575

Nearby Water Temperatures

North Branch Au Sable River, Grayling, MI (7.3 mi)
Au Sable River, Luzerne, MI (9.1 mi)
Au Sable River, Mio, MI (16.3 mi)
Manistee River, Grayling, MI (20 mi)
Au Sable River, Curran, MI (30.4 mi)
Au Sable River, Glennie, MI (32.3 mi)
Au Sable River, South Branch, MI (37.6 mi)
Au Sable River, Glennie, MI (40 mi)
Rifle River, Sterling, MI (43.2 mi)
Au Sable River, Oscoda, MI (44.6 mi)
Au Sable River, Oscoda, MI (51.8 mi)
Thunder Bay River, Alpena, MI (59.1 mi)
Manistee River, Mesick, MI (62.5 mi)
Little Traverse Bay, Petoskey, MI (62.7 mi)
Lake Huron, Alpena, MI (63.6 mi)

Weather for Grayling, Michigan

Current Weather

64°F
Mostly Clear
Mostly Clear
63%
SE 5 mph
51°F

Weather Forecast

Partly Cloudy then Areas Of Fog
Tonight
43°F - Partly Cloudy then Areas Of Fog
Areas Of Fog then Partly Sunny
Friday
69°F - Areas Of Fog then Partly Sunny
Areas Of Fog
Friday Night
40°F - Areas Of Fog
Areas Of Fog then Mostly Sunny
Saturday
71°F - Areas Of Fog then Mostly Sunny
Clear
Saturday Night
41°F - Clear
Sunny
Sunday
72°F - Sunny
Mostly Clear
Sunday Night
42°F - Mostly Clear
Sunny
Monday
73°F - Sunny
Mostly Clear
Monday Night
43°F - Mostly Clear
Mostly Sunny
Tuesday
72°F - Mostly Sunny
Chance Rain Showers
Tuesday Night
53°F - Chance Rain Showers
Chance Rain Showers
Wednesday
68°F - Chance Rain Showers
Chance Rain Showers
Wednesday Night
54°F - Chance Rain Showers
Chance Rain Showers
Thursday
66°F - Chance Rain Showers

Astronomical

Sunrise: 7:27 AM
Sun Transit: 1:29 PM
Sunset: 7:31 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:36 PM
Moon Transit: 12:00 AM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

6:06 PM - 7:36 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 1:29 PM
Sunset: 7:31 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:36 PM
Moon Transit: 12:00 AM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

6:06 PM - 7:36 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 1:29 PM
Sunset: 7:29 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:55 PM
Moon Transit: 12:18 AM
Moonset: 6:13 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:56 AM - 3:26 PM

Minor Periods

6:25 PM - 7:55 PM
5:43 AM - 7:13 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 1:29 PM
Sunset: 7:29 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:55 PM
Moon Transit: 12:18 AM
Moonset: 6:13 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:56 AM - 3:26 PM

Minor Periods

6:25 PM - 7:55 PM
5:43 AM - 7:13 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 1:29 PM
Sunset: 7:27 PM
Daylight: 11 hrs 58 mins
Moonrise: 7:14 PM
Moon Transit: 8:33 AM
Moonset: 7:24 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

6:44 PM - 8:14 PM
6:54 AM - 8:24 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 1:29 PM
Sunset: 7:27 PM
Daylight: 11 hrs 58 mins
Moonrise: 7:14 PM
Moon Transit: 8:33 AM
Moonset: 7:24 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

6:44 PM - 8:14 PM
6:54 AM - 8:24 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 1:28 PM
Sunset: 7:25 PM
Daylight: 11 hrs 55 mins
Moonrise: 7:35 PM
Moon Transit: 12:00 AM
Moonset: 8:38 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

7:05 PM - 8:35 PM
8:08 AM - 9:38 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 1:28 PM
Sunset: 7:25 PM
Daylight: 11 hrs 55 mins
Moonrise: 7:35 PM
Moon Transit: 12:00 AM
Moonset: 8:38 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

7:05 PM - 8:35 PM
8:08 AM - 9:38 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 1:28 PM
Sunset: 7:24 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:00 PM
Moon Transit: 2:36 AM
Moonset: 9:54 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
3:18 PM - 5:48 PM

Minor Periods

7:30 PM - 9:00 PM
9:24 AM - 10:54 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 1:28 PM
Sunset: 7:24 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:00 PM
Moon Transit: 2:36 AM
Moonset: 9:54 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
3:18 PM - 5:48 PM

Minor Periods

7:30 PM - 9:00 PM
9:24 AM - 10:54 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 1:28 PM
Sunset: 7:22 PM
Daylight: 11 hrs 49 mins
Moonrise: 8:31 PM
Moon Transit: 3:28 AM
Moonset: 11:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
4:12 PM - 6:42 PM

Minor Periods

8:01 PM - 9:31 PM
10:44 AM - 12:14 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 1:28 PM
Sunset: 7:22 PM
Daylight: 11 hrs 49 mins
Moonrise: 8:31 PM
Moon Transit: 3:28 AM
Moonset: 11:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
4:12 PM - 6:42 PM

Minor Periods

8:01 PM - 9:31 PM
10:44 AM - 12:14 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:27 PM
Sunset: 7:20 PM
Daylight: 11 hrs 45 mins
Moonrise: 9:10 PM
Moon Transit: 4:25 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
5:10 PM - 7:40 PM

Minor Periods

8:40 PM - 10:10 PM
12:04 AM - 1:34 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:27 PM
Sunset: 7:20 PM
Daylight: 11 hrs 45 mins
Moonrise: 9:10 PM
Moon Transit: 4:25 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
5:10 PM - 7:40 PM

Minor Periods

8:40 PM - 10:10 PM
12:04 AM - 1:34 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:36 AM
Sun Transit: 1:27 PM
Sunset: 7:18 PM
Daylight: 11 hrs 42 mins
Moonrise: 10:02 PM
Moon Transit: 5:25 AM
Moonset: 1:49 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
6:12 PM - 8:42 PM

Minor Periods

9:32 PM - 11:02 PM
1:19 PM - 2:49 PM

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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