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

Current Water Temperature

55.6°F

Measurement Time: Monday, September 14, 2026, 5:30 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

52°F
Sunny
Sunny
71%
0 mph
43°F

Weather Forecast

Sunny
Today
70°F - Sunny
Scattered Rain Showers then Rain Likely
Tonight
50°F - Scattered Rain Showers then Rain Likely
Rain Likely then Scattered Rain Showers
Tuesday
74°F - Rain Likely then Scattered Rain Showers
Isolated Rain Showers then Mostly Cloudy
Tuesday Night
43°F - Isolated Rain Showers then Mostly Cloudy
Partly Sunny
Wednesday
71°F - Partly Sunny
Rain Showers Likely
Wednesday Night
50°F - Rain Showers Likely
Rain Showers Likely
Thursday
72°F - Rain Showers Likely
Partly Cloudy
Thursday Night
45°F - Partly Cloudy
Mostly Sunny then Chance Rain Showers
Friday
72°F - Mostly Sunny then Chance Rain Showers
Chance Rain Showers
Friday Night
51°F - Chance Rain Showers
Chance Rain Showers
Saturday
69°F - Chance Rain Showers
Chance Showers And Thunderstorms
Saturday Night
45°F - Chance Showers And Thunderstorms
Slight Chance Rain Showers
Sunday
68°F - Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday Night
46°F - Slight Chance Rain Showers

Astronomical

Sunrise: 7:15 AM
Sun Transit: 1:33 PM
Sunset: 7:50 PM
Daylight: 12 hrs 35 mins
Moonrise: 11:19 AM
Moon Transit: 4:14 PM
Moonset: 9:02 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
3:44 PM - 6:14 PM

Minor Periods

8:32 PM - 10:02 PM
10:49 AM - 12:19 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: 7:15 AM
Sun Transit: 1:33 PM
Sunset: 7:50 PM
Daylight: 12 hrs 35 mins
Moonrise: 11:19 AM
Moon Transit: 4:14 PM
Moonset: 9:02 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
3:44 PM - 6:14 PM

Minor Periods

8:32 PM - 10:02 PM
10:49 AM - 12:19 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: 7:15 AM
Sun Transit: 1:33 PM
Sunset: 7:50 PM
Daylight: 12 hrs 35 mins
Moonrise: 11:19 AM
Moon Transit: 4:14 PM
Moonset: 9:02 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
3:44 PM - 6:14 PM

Minor Periods

8:32 PM - 10:02 PM
10:49 AM - 12:19 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: 7:17 AM
Sun Transit: 1:32 PM
Sunset: 7:48 PM
Daylight: 12 hrs 32 mins
Moonrise: 12:29 AM
Moon Transit: 5:02 PM
Moonset: 9:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
4:32 PM - 7:02 PM

Minor Periods

8:59 PM - 10:29 PM
11:59 AM - 1:29 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: 7:17 AM
Sun Transit: 1:32 PM
Sunset: 7:48 PM
Daylight: 12 hrs 32 mins
Moonrise: 12:29 AM
Moon Transit: 5:02 PM
Moonset: 9:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
4:32 PM - 7:02 PM

Minor Periods

8:59 PM - 10:29 PM
11:59 AM - 1:29 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: 7:18 AM
Sun Transit: 1:32 PM
Sunset: 7:46 PM
Daylight: 12 hrs 29 mins
Moonrise: 1:36 PM
Moon Transit: 5:51 PM
Moonset: 10:03 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

5:42 AM - 8:12 AM
5:21 PM - 7:51 PM

Minor Periods

9:33 PM - 11:03 PM
1:06 PM - 2:36 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: 7:18 AM
Sun Transit: 1:32 PM
Sunset: 7:46 PM
Daylight: 12 hrs 29 mins
Moonrise: 1:36 PM
Moon Transit: 5:51 PM
Moonset: 10:03 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

5:42 AM - 8:12 AM
5:21 PM - 7:51 PM

Minor Periods

9:33 PM - 11:03 PM
1:06 PM - 2:36 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: 7:19 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

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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