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

Current Water Temperature

56.8°F

Measurement Time: Thursday, September 17, 2026, 6:30 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

62°F
Partly Sunny
Partly Sunny
62%
0 mph
49°F

Weather Forecast

Partly Sunny
This Afternoon
71°F - Partly Sunny
Partly Cloudy
Tonight
45°F - Partly Cloudy
Partly Sunny
Friday
68°F - Partly Sunny
Mostly Cloudy then Scattered Rain Showers
Friday Night
44°F - Mostly Cloudy then Scattered Rain Showers
Scattered Rain Showers
Saturday
60°F - Scattered Rain Showers
Light Rain Likely then Scattered Rain Showers
Saturday Night
46°F - Light Rain Likely then Scattered Rain Showers
Isolated Rain Showers then Partly Sunny
Sunday
66°F - Isolated Rain Showers then Partly Sunny
Partly Cloudy
Sunday Night
42°F - Partly Cloudy
Mostly Cloudy
Monday
60°F - Mostly Cloudy
Mostly Cloudy
Monday Night
40°F - Mostly Cloudy
Partly Sunny
Tuesday
64°F - Partly Sunny
Mostly Cloudy then Slight Chance Rain Showers
Tuesday Night
44°F - Mostly Cloudy then Slight Chance Rain Showers
Slight Chance Rain Showers
Wednesday
69°F - Slight Chance Rain Showers
Slight Chance Rain Showers then Partly Cloudy
Wednesday Night
47°F - Slight Chance Rain Showers then Partly Cloudy

Astronomical

Sunrise: 7:19 AM
Sun Transit: 1:32 PM
Sunset: 7:44 PM
Daylight: 12 hrs 25 mins
Moonrise: 2:39 PM
Moon Transit: 6:42 PM
Moonset: 10:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
6:12 PM - 8:42 PM

Minor Periods

10:15 PM - 11:45 PM
2:09 PM - 3:39 PM

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: 7:19 AM
Sun Transit: 1:32 PM
Sunset: 7:44 PM
Daylight: 12 hrs 25 mins
Moonrise: 2:39 PM
Moon Transit: 6:42 PM
Moonset: 10:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
6:12 PM - 8:42 PM

Minor Periods

10:15 PM - 11:45 PM
2:09 PM - 3:39 PM

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: 7:19 AM
Sun Transit: 1:32 PM
Sunset: 7:44 PM
Daylight: 12 hrs 25 mins
Moonrise: 2:39 PM
Moon Transit: 6:42 PM
Moonset: 10:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
6:12 PM - 8:42 PM

Minor Periods

10:15 PM - 11:45 PM
2:09 PM - 3:39 PM

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: 7:20 AM
Sun Transit: 1:31 PM
Sunset: 7:42 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:34 PM
Moon Transit: 7:34 PM
Moonset: 11:35 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:24 AM - 9:54 AM
7:04 PM - 9:34 PM

Minor Periods

12:00 AM - 12:00 AM
3:04 PM - 4:34 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: 7:20 AM
Sun Transit: 1:31 PM
Sunset: 7:42 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:34 PM
Moon Transit: 7:34 PM
Moonset: 11:35 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:24 AM - 9:54 AM
7:04 PM - 9:34 PM

Minor Periods

12:00 AM - 12:00 AM
3:04 PM - 4:34 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: 7:21 AM
Sun Transit: 1:31 PM
Sunset: 7:41 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:21 PM
Moon Transit: 8:25 PM
Moonset: 12:35 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
7:55 PM - 10:25 PM

Minor Periods

3:51 PM - 5:21 PM
12:00 AM - 12:00 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: 7:21 AM
Sun Transit: 1:31 PM
Sunset: 7:41 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:21 PM
Moon Transit: 8:25 PM
Moonset: 12:35 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
7:55 PM - 10:25 PM

Minor Periods

3:51 PM - 5:21 PM
12:00 AM - 12:00 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: 7:22 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

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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