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

Current Water Temperature

34.9°F

Measurement Time: Monday, December 1, 2025, 2:30 AM EST

Temperature Locations

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Local Points of Interest

Au Sable State Forest-Grayling Unit; Luzerne, MI

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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 / 326 meters

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 (20.0 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 (40.0 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

19.2°F
Overcast
Conditions: Overcast
Humidity: 84%
Feels Like: 14.2°F
Wind: WSW 3.4 mph
Wind Gusts: 6.8 mph
Pressure: 30.33 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Patchy moderate snow
Mon
H: 28°F
L: 6°F
Cloudy
Tue
H: 30°F
L: 25°F
Light freezing rain
Wed
H: 32°F
L: 23°F
Moderate or heavy snow showers
Thu
H: 17°F
L: 10°F
Overcast
Fri
H: 19°F
L: 10°F

Air Quality

AQI: 1 - Good
PM2.5: 1.35 μg/m3
PM10: 1.45 μg/m3
Carbon Monoxide: 143.85 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 7:55 AM
Sun Transit: 12:27 AM
Sunset: 4:59 PM
Daylight: 9 hrs 4 mins
Moonrise: 2:32 PM
Moon Transit: 9:38 PM
Moonset: 3:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

9:27 AM - 11:57 AM
9:08 PM - 11:38 PM

Minor Periods

2:02 PM - 3:32 PM
3:09 AM - 4:39 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued December 1 at 2:59AM EST until December 2 at 8:00AM EST by NWS Gaylord MI

Effective: Mon December 1, 2025, 2:59 AM
Expires: Mon December 1, 2025, 3:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 to 6 inches with locally higher amounts possible along the immediate Lake Michigan shoreline. * WHERE...Antrim, Benzie, Leelanau, and Manistee Counties. * WHEN...From 7 PM this evening to 8 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute.

Slow down and use caution while traveling. During lake effect snow, the weather can vary from bands of locally heavy snow to dry weather just a few miles away. Visibilities can also vary greatly. Be prepared for rapid changes in weather, visibility, and road conditions.
Monday, December 1, 2025

Weather Forecast

Conditions: Patchy moderate snow
Average Temperature: 18.5°F
Average Humidity: 74%
Chance of Rain: 62%
Wind: 8.9 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.72 μg/m3
PM10: 1.86 μg/m3
Carbon Monoxide: 145.81 μg/m3
Nitrogen Dioxide: 2.19 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 82.96 μg/m3

Astronomical

Sunrise: 7:55 AM
Sun Transit: 12:27 AM
Sunset: 4:59 PM
Daylight: 9 hrs 4 mins
Moonrise: 2:32 PM
Moon Transit: 9:38 PM
Moonset: 3:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

9:27 AM - 11:57 AM
9:08 PM - 11:38 PM

Minor Periods

2:02 PM - 3:32 PM
3:09 AM - 4:39 AM

Action Rating: 2 out of 5

Tuesday, December 2, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 27.3°F
Average Humidity: 80%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.4 μg/m3
PM10: 2.56 μg/m3
Carbon Monoxide: 161.29 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 77.8 μg/m3

Astronomical

Sunrise: 7:56 AM
Sun Transit: 12:27 AM
Sunset: 4:59 PM
Daylight: 9 hrs 3 mins
Moonrise: 2:59 PM
Moon Transit: 10:34 PM
Moonset: 5:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

10:21 AM - 12:51 AM
12:00 AM - 12:00 AM

Minor Periods

2:29 PM - 3:59 PM
4:32 AM - 6:02 AM

Action Rating: 2 out of 5

Wednesday, December 3, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: 27.8°F
Average Humidity: 85%
Chance of Rain: 71%
Wind: 12.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 2.39 μg/m3
PM10: 2.44 μg/m3
Carbon Monoxide: 174.97 μg/m3
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 70.24 μg/m3

Astronomical

Sunrise: 7:57 AM
Sun Transit: 12:27 AM
Sunset: 4:58 PM
Daylight: 9 hrs 1 mins
Moonrise: 3:33 PM
Moon Transit: 11:36 PM
Moonset: 6:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

11:21 AM - 1:51 PM
12:00 AM - 12:00 AM

Minor Periods

3:03 PM - 4:33 PM
5:58 AM - 7:28 AM

Action Rating: 4 out of 5

Thursday, December 4, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 15.2°F
Average Humidity: 84%
Chance of Rain: 82%
Wind: 13.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.62 μg/m3
PM10: 1.81 μg/m3
Carbon Monoxide: 148.97 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 78.2 μg/m3

Astronomical

Sunrise: 7:58 AM
Sun Transit: 12:28 AM
Sunset: 4:58 PM
Daylight: 9 hrs mins
Moonrise: 4:20 PM
Moon Transit: 12:00 AM
Moonset: 7:53 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:25 AM - 2:55 PM

Minor Periods

3:50 PM - 5:20 PM
7:23 AM - 8:53 AM

Action Rating: 4 out of 5

Friday, December 5, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 13.5°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 2.89 μg/m3
PM10: 3.47 μg/m3
Carbon Monoxide: 175.08 μg/m3
Nitrogen Dioxide: 3.94 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 75.31 μg/m3

Astronomical

Sunrise: 7:59 AM
Sun Transit: 12:28 AM
Sunset: 4:58 PM
Daylight: 8 hrs 59 mins
Moonrise: 5:20 PM
Moon Transit: 12:42 AM
Moonset: 9:12 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:12 AM - 2:42 AM
1:32 PM - 4:02 PM

Minor Periods

4:50 PM - 6:20 PM
8:42 AM - 10:12 AM

Action Rating: 4 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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