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

Current Water Temperature

37.6°F

Measurement Time: Sunday, December 28, 2025, 5:30 PM 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

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

33.9°F
Light to moderate rain
Conditions: Light to moderate rain
Humidity: 95%
Heat Index: 33.9°F
Feels Like: 26.6°F
Wind: E 5.6 mph
Wind Gusts: 15 mph
Wind Chill: 26.6°F
Air Pressure: 987.57 millibars
Dew Point: 26.6°F
Chance of Precipitation: 83%
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 2 mi
UV Index: 0

Five Day Weather Forecast

Freezing fog
Sun
H: 32°F
L: 28°F
Moderate or heavy snow showers
Mon
H: 27°F
L: 17°F
Overcast
Tue
H: 22°F
L: 18°F
Light freezing rain
Wed
H: 24°F
L: 12°F
Moderate or heavy snow showers
Thu
H: 12°F
L: 7°F

Air Quality

AQI: 1 - Good
PM2.5: 0.95 μg/m3
PM10: 0.95 μg/m3
Carbon Monoxide: 229.85 μg/m3
Nitrogen Dioxide: 7.85 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 8:14 AM
Sun Transit: 12:39 AM
Sunset: 5:05 PM
Daylight: 8 hrs 51 mins
Moonrise: 12:33 AM
Moon Transit: 7:27 PM
Moonset: 1:21 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

7:19 AM - 9:49 AM
6:57 PM - 9:27 PM

Minor Periods

12:03 AM - 1:33 PM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Winter Storm Warning issued December 28 at 11:07AM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the Winter Weather Advisory, freezing drizzle/ rain expected. Additional ice accumulations likely remaining under a tenth of an inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Alpena, Crawford, and Montmorency Counties. * WHEN...For the Winter Weather Advisory, until 1 PM EST this afternoon. For the Winter Storm Warning, from 1 AM to 7 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. Prepare for possible power outages.


Winter Storm Warning issued December 28 at 5:18PM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 5:18 PM
Expires: Mon December 29, 2025, 5:30 AM

* WHAT...Light freezing rain transitioning to wind-driven snow later tonight and Monday. Total snow accumulations between 4 and 6 inches and ice accumulations around a light glaze. Winds gusting as high as 55 mph. * WHERE...Alpena, Crawford, and Missaukee Counties. * WHEN...From 1 AM to 7 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult. The hazardous conditions will impact the Monday morning and evening commutes. Strong winds could cause tree damage and produce local power outages.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.


Winter Weather Advisory issued December 28 at 11:07AM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the first Winter Weather Advisory, freezing rain. Additional ice accumulations likely remaining under a tenth of an inch. For the second Winter Weather Advisory, snow expected. Total snow accumulations between 2 and 6 inches. Winds gusting as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Alcona, Arenac, Iosco, Ogemaw, and Oscoda Counties. * WHEN...For the first Winter Weather Advisory, until 1 PM EST this afternoon. For the second Winter Weather Advisory, from 1 AM to 7 PM EST Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

Slow down and use caution while traveling. Prepare for possible power outages.


Winter Weather Advisory issued December 28 at 5:18PM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 5:18 PM
Expires: Mon December 29, 2025, 5:30 AM

* WHAT...Light rain transitions to wind-driven snow later tonight and Monday. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 50 mph. * WHERE...A portion of Northern Lower Michigan. * WHEN...From 1 AM to 7 PM EST Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and evening commutes. Gusty winds could bring down tree branches and produce local power outages.

Slow down and use caution while traveling.


Winter Weather Advisory issued December 28 at 11:07AM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the first Winter Weather Advisory, freezing rain. Additional ice accumulations likely remaining under a tenth of an inch. For the second Winter Weather Advisory, snow expected. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Gladwin and Roscommon Counties. * WHEN...For the first Winter Weather Advisory, until 1 PM EST this afternoon. For the second Winter Weather Advisory, from 1 AM to 7 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

Slow down and use caution while traveling. Prepare for possible power outages.


Winter Storm Warning issued December 28 at 11:07AM EST until December 30 at 1:00AM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the Winter Weather Advisory, freezing drizzle expected. Total ice accumulations likely remaining under a tenth of an inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 8 and 12 inches...with locally heavier amounts possible. Winds could gust as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Antrim, Charlevoix, and Otsego Counties. * WHEN...For the Winter Weather Advisory, until 1 PM EST this afternoon. For the Winter Storm Warning, from 1 AM Monday to 1 AM EST Tuesday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel dangerous and potentially life-threatening. Travel could be very difficult. The hazardous conditions will impact the Monday morning and evening commutes. Strong winds could cause tree damage and power outages.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. Prepare for possible power outages.


Winter Storm Warning issued December 28 at 5:18PM EST until December 30 at 1:00AM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 5:18 PM
Expires: Mon December 29, 2025, 5:30 AM

* WHAT...Light freezing rain this evening, with accumulations of a light glaze. Wind driven snow late tonight and Monday. Total snow accumulations between 6 and 9 inches. Winds gusting as high as 50 mph. Brief whiteout conditions possible Monday. * WHERE...Otsego County. * WHEN...Until 1 AM EST Tuesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.


Winter Storm Warning issued December 28 at 5:18PM EST until December 30 at 1:00AM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 5:18 PM
Expires: Mon December 29, 2025, 5:30 AM

* WHAT...Light freezing rain this evening, with accumulations of a light glaze. Wind driven snow late tonight and Monday. Total snow accumulations between 5 and 8 inches. Winds gusting as high as 50 mph. Brief whiteout conditions possible Monday. * WHERE...Montmorency County. * WHEN...Until 1 AM EST Tuesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.


Winter Storm Warning issued December 28 at 11:07AM EST until December 30 at 1:00AM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the Winter Weather Advisory, freezing drizzle expected. Total ice accumulations likely remaining under a tenth of an inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 8 and 12 inches...with locally heavier amounts possible. Winds could gust as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Grand Traverse, Kalkaska, and Wexford Counties. * WHEN...For the Winter Weather Advisory, until 1 PM EST this afternoon. For the Winter Storm Warning, from 1 AM Monday to 1 AM EST Tuesday. * IMPACTS...Roads may be ice-covered and slick through early afternoon. Rapid development of snow covered roads expected later tonight into Monday. Gusty winds could result in periods of whiteout conditions, making travel dangerous and potentially life-threatening. Isolated power outages are possible Sunday night and Monday.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. Prepare for possible power outages.


Winter Storm Warning issued December 28 at 5:18PM EST until December 30 at 1:00AM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 5:18 PM
Expires: Mon December 29, 2025, 5:30 AM

* WHAT...Light freezing rain transitioning to wind-driven snow later tonight and Monday. Total snow accumulations between 6 and 9 inches and ice accumulations around a light glaze. Winds gusting as high as 55 mph. * WHERE...A portion of Northern Lower Michigan. * WHEN...From 1 AM Monday to 1 AM EST Tuesday. * IMPACTS...Rapid development of snow covered roads expected later tonight into Monday. Gusty winds could result in periods of whiteout conditions, making travel treacherous and potentially life-threatening. Isolated power outages are possible Sunday night and Monday.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.


Winter Storm Warning issued December 28 at 11:07AM EST until December 29 at 7:00PM EST by NWS Gaylord MI

Effective: Sun December 28, 2025, 11:07 AM
Expires: Sun December 28, 2025, 11:15 PM

* WHAT...For the Winter Weather Advisory, freezing drizzle/ rain expected. Additional ice accumulations likely remaining under a tenth of an inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 45 mph, resulting in significant blowing and drifting snow. * WHERE...Missaukee County. * WHEN...For the Winter Weather Advisory, until 1 PM EST this afternoon. For the Winter Storm Warning, from 1 AM to 7 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. Prepare for possible power outages.


Sunday, December 28, 2025

Weather Forecast

Conditions: Freezing fog
Average Temperature: 30.2°F
Average Humidity: 98%
Chance of Rain: 78%
Wind: 9.2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 2.89 μg/m3
PM10: 2.9 μg/m3
Carbon Monoxide: 219.65 μg/m3
Nitrogen Dioxide: 8.74 μg/m3
Sulphur Dioxide: 2.89 μg/m3
Ozone: 43.64 μg/m3

Astronomical

Sunrise: 8:14 AM
Sun Transit: 12:39 AM
Sunset: 5:05 PM
Daylight: 8 hrs 51 mins
Moonrise: 12:33 AM
Moon Transit: 7:27 PM
Moonset: 1:21 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

7:19 AM - 9:49 AM
6:57 PM - 9:27 PM

Minor Periods

12:03 AM - 1:33 PM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 23.3°F
Average Humidity: 84%
Chance of Rain: 86%
Wind: 22.6 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.18 μg/m3
PM10: 1.2 μg/m3
Carbon Monoxide: 190.17 μg/m3
Nitrogen Dioxide: 5.37 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 56.28 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:40 AM
Sunset: 5:06 PM
Daylight: 8 hrs 51 mins
Moonrise: 12:57 AM
Moon Transit: 8:19 PM
Moonset: 2:39 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
7:49 PM - 10:19 PM

Minor Periods

12:27 AM - 1:57 PM
2:09 AM - 3:39 AM

Action Rating: 3 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 20°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 18.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.14 μg/m3
PM10: 1.21 μg/m3
Carbon Monoxide: 144.69 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 80.72 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:40 AM
Sunset: 5:07 PM
Daylight: 8 hrs 52 mins
Moonrise: 1:26 PM
Moon Transit: 9:16 PM
Moonset: 3:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:03 AM - 11:33 AM
8:46 PM - 11:16 PM

Minor Periods

12:56 AM - 2:26 PM
3:29 AM - 4:59 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: 20.3°F
Average Humidity: 77%
Chance of Rain: 66%
Wind: 14.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.76 μg/m3
PM10: 1.91 μg/m3
Carbon Monoxide: 152.96 μg/m3
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 77.8 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:41 AM
Sunset: 5:07 PM
Daylight: 8 hrs 53 mins
Moonrise: 2:05 PM
Moon Transit: 10:19 PM
Moonset: 5:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
12:00 AM - 12:00 AM

Minor Periods

1:35 PM - 3:05 PM
4:53 AM - 6:23 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 9.6°F
Average Humidity: 84%
Chance of Rain: 82%
Wind: 12.5 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 1.61 μg/m3
PM10: 1.77 μg/m3
Carbon Monoxide: 158.26 μg/m3
Nitrogen Dioxide: 2.17 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 77.85 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:41 AM
Sunset: 5:08 PM
Daylight: 8 hrs 53 mins
Moonrise: 2:58 PM
Moon Transit: 11:25 PM
Moonset: 6:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

11:08 AM - 1:38 PM
12:00 AM - 12:00 AM

Minor Periods

2:28 PM - 3:58 PM
6:14 AM - 7:44 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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