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

Current Water Temperature

54.0°F

Measurement Time: Saturday, September 26, 2026, 4:30 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

53°F
Clear
Clear
83%
0 mph
48°F

Weather Forecast

Patchy Fog
Tonight
39°F - Patchy Fog
Patchy Fog then Sunny
Sunday
72°F - Patchy Fog then Sunny
Mostly Clear
Sunday Night
41°F - Mostly Clear
Sunny
Monday
73°F - Sunny
Mostly Clear
Monday Night
41°F - Mostly Clear
Sunny
Tuesday
74°F - Sunny
Partly Cloudy then Chance Rain Showers
Tuesday Night
53°F - Partly Cloudy then Chance Rain Showers
Chance Rain Showers
Wednesday
69°F - Chance Rain Showers
Chance Rain Showers
Wednesday Night
53°F - Chance Rain Showers
Chance Rain Showers
Thursday
70°F - Chance Rain Showers
Chance Rain Showers
Thursday Night
46°F - Chance Rain Showers
Chance Rain Showers
Friday
65°F - Chance Rain Showers
Chance Rain Showers
Friday Night
42°F - Chance Rain Showers
Slight Chance Rain Showers
Saturday
65°F - Slight Chance Rain Showers

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

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

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: 7:37 AM
Sun Transit: 1:27 PM
Sunset: 7:16 PM
Daylight: 11 hrs 39 mins
Moonrise: 11:06 PM
Moon Transit: 6:27 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
7:15 PM - 9:45 PM

Minor Periods

12:00 AM - 12:00 AM
2:24 PM - 3:54 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: 7:37 AM
Sun Transit: 1:27 PM
Sunset: 7:16 PM
Daylight: 11 hrs 39 mins
Moonrise: 11:06 PM
Moon Transit: 6:27 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
7:15 PM - 9:45 PM

Minor Periods

12:00 AM - 12:00 AM
2:24 PM - 3:54 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: 7:38 AM
Sun Transit: 1:26 PM
Sunset: 7:14 PM
Daylight: 11 hrs 36 mins
Moonrise: 12:06 AM
Moon Transit: 7:30 AM
Moonset: 3:46 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

7:00 AM - 9:30 AM
8:16 PM - 10:46 PM

Minor Periods

3:16 PM - 4:46 PM
12:00 AM - 12:00 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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