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

Current Water Temperature

59.0°F

Measurement Time: Sunday, September 20, 2026, 10:30 AM 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

65°F
Partly Sunny
Partly Sunny
60%
NE 10 mph
51°F

Weather Forecast

Partly Sunny
This Afternoon
67°F - Partly Sunny
Mostly Cloudy
Tonight
39°F - Mostly Cloudy
Mostly Cloudy
Monday
56°F - Mostly Cloudy
Mostly Cloudy
Monday Night
37°F - Mostly Cloudy
Mostly Sunny
Tuesday
61°F - Mostly Sunny
Mostly Clear
Tuesday Night
38°F - Mostly Clear
Sunny
Wednesday
64°F - Sunny
Mostly Clear
Wednesday Night
39°F - Mostly Clear
Sunny
Thursday
67°F - Sunny
Partly Cloudy
Thursday Night
39°F - Partly Cloudy
Mostly Sunny
Friday
69°F - Mostly Sunny
Mostly Clear
Friday Night
38°F - Mostly Clear
Sunny
Saturday
72°F - Sunny
Mostly Clear
Saturday Night
41°F - Mostly Clear

Astronomical

Sunrise: 7:22 AM
Sun Transit: 1:31 PM
Sunset: 7:39 PM
Daylight: 12 hrs 16 mins
Moonrise: 4:59 PM
Moon Transit: 9:15 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
8:45 PM - 11:15 PM

Minor Periods

4:29 PM - 5:59 PM
12:04 AM - 1:34 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: 7:22 AM
Sun Transit: 1:31 PM
Sunset: 7:39 PM
Daylight: 12 hrs 16 mins
Moonrise: 4:59 PM
Moon Transit: 9:15 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
8:45 PM - 11:15 PM

Minor Periods

4:29 PM - 5:59 PM
12:04 AM - 1:34 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: 7:22 AM
Sun Transit: 1:31 PM
Sunset: 7:39 PM
Daylight: 12 hrs 16 mins
Moonrise: 4:59 PM
Moon Transit: 9:15 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
8:45 PM - 11:15 PM

Minor Periods

4:29 PM - 5:59 PM
12:04 AM - 1:34 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: 7:24 AM
Sun Transit: 1:30 PM
Sunset: 7:37 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:30 PM
Moon Transit: 10:03 PM
Moonset: 1:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

9:55 AM - 12:25 AM
12:00 AM - 12:00 AM

Minor Periods

5:00 PM - 6:30 PM
1:07 AM - 2:37 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: 7:24 AM
Sun Transit: 1:30 PM
Sunset: 7:37 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:30 PM
Moon Transit: 10:03 PM
Moonset: 1:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

9:55 AM - 12:25 AM
12:00 AM - 12:00 AM

Minor Periods

5:00 PM - 6:30 PM
1:07 AM - 2:37 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: 7:25 AM
Sun Transit: 1:30 PM
Sunset: 7:35 PM
Daylight: 12 hrs 10 mins
Moonrise: 5:55 PM
Moon Transit: 10:49 PM
Moonset: 2:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

10:42 AM - 1:12 PM
12:00 AM - 12:00 AM

Minor Periods

5:25 PM - 6:55 PM
2:15 AM - 3:45 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: 7:25 AM
Sun Transit: 1:30 PM
Sunset: 7:35 PM
Daylight: 12 hrs 10 mins
Moonrise: 5:55 PM
Moon Transit: 10:49 PM
Moonset: 2:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

10:42 AM - 1:12 PM
12:00 AM - 12:00 AM

Minor Periods

5:25 PM - 6:55 PM
2:15 AM - 3:45 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: 7:26 AM
Sun Transit: 1:30 PM
Sunset: 7:33 PM
Daylight: 12 hrs 7 mins
Moonrise: 6:17 PM
Moon Transit: 11:34 PM
Moonset: 3:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

11:27 AM - 1:57 PM
12:00 AM - 12:00 AM

Minor Periods

5:47 PM - 7:17 PM
3:23 AM - 4:53 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: 7:26 AM
Sun Transit: 1:30 PM
Sunset: 7:33 PM
Daylight: 12 hrs 7 mins
Moonrise: 6:17 PM
Moon Transit: 11:34 PM
Moonset: 3:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

11:27 AM - 1:57 PM
12:00 AM - 12:00 AM

Minor Periods

5:47 PM - 7:17 PM
3:23 AM - 4:53 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: 7:27 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

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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