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

Current Water Temperature

32.4°F

Measurement Time: Wednesday, January 28, 2026, 3:30 PM EST

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

10.8°F
Light snow
Light snow
-0.1°F
7.8°F
72%
NNW 6.9 mph
9.9 mph
-2.4°F
2°F
0 in
100%
9 mi
1015 mbar
0

Five Day Weather Forecast

Light freezing rain
Wed
H: 15°F
L: -1°F
Partly Cloudy
Thu
H: 11°F
L: -7°F
Partly Cloudy
Fri
H: 10°F
L: -4°F
Sunny
Sat
H: 16°F
L: 2°F
Mist
Sun
H: 27°F
L: 1°F

Air Quality

AQI: 1 - Good
PM2.5: 1.25 μg/m3
PM10: 1.25 μg/m3
Carbon Monoxide: 171.85 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 8:01 AM
Sun Transit: 12:50 AM
Sunset: 5:41 PM
Daylight: 9 hrs 40 mins
Moonrise: 12:45 AM
Moon Transit: 9:08 PM
Moonset: 4:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

8:52 AM - 11:22 AM
8:38 PM - 11:08 PM

Minor Periods

12:15 AM - 1:45 PM
3:54 AM - 5:24 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued January 28 at 12:50PM EST until January 29 at 10:00AM EST by NWS Gaylord MI

Effective: Wed January 28, 2026, 12:50 PM
Expires: Thu January 29, 2026, 1:00 AM

* WHAT...Very cold wind chills as low as 25 below expected. Air temperatures between 10 below and 15 below. * WHERE...A portion of Northern Lower Michigan. * WHEN...From 10 PM this evening to 10 AM EST Thursday. * IMPACTS...Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. Very cold temperatures can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...Coldest period will be late tonight into very early Thursday.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors.
Wednesday, January 28, 2026

Weather Forecast

Light freezing rain
15.1°F
-0.9°F
7.1°F
72%
0.02 in
84%
35%
11.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.31 μg/m3
PM10: 2.37 μg/m3
Carbon Monoxide: 175.41 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 75.88 μg/m3

Astronomical

Sunrise: 8:01 AM
Sun Transit: 12:50 AM
Sunset: 5:41 PM
Daylight: 9 hrs 40 mins
Moonrise: 12:45 AM
Moon Transit: 9:08 PM
Moonset: 4:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

8:52 AM - 11:22 AM
8:38 PM - 11:08 PM

Minor Periods

12:15 AM - 1:45 PM
3:54 AM - 5:24 AM

Action Rating: 2 out of 5

Thursday, January 29, 2026

Weather Forecast

Partly Cloudy
11.1°F
-6.7°F
2.5°F
63%
0 in
0%
3%
5.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.58 μg/m3
PM10: 1.64 μg/m3
Carbon Monoxide: 170.61 μg/m3
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 67.92 μg/m3

Astronomical

Sunrise: 8:00 AM
Sun Transit: 12:50 AM
Sunset: 5:42 PM
Daylight: 9 hrs 43 mins
Moonrise: 1:43 PM
Moon Transit: 10:13 PM
Moonset: 5:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

9:56 AM - 12:26 AM
12:00 AM - 12:00 AM

Minor Periods

1:13 PM - 2:43 PM
5:07 AM - 6:37 AM

Action Rating: 2 out of 5

Friday, January 30, 2026

Weather Forecast

Partly Cloudy
10.2°F
-3.8°F
3.5°F
65%
0 in
0%
0%
7.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.05 μg/m3
PM10: 2.17 μg/m3
Carbon Monoxide: 166.57 μg/m3
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 68.44 μg/m3

Astronomical

Sunrise: 7:59 AM
Sun Transit: 12:51 AM
Sunset: 5:44 PM
Daylight: 9 hrs 45 mins
Moonrise: 2:55 PM
Moon Transit: 11:16 PM
Moonset: 6:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

11:01 AM - 1:31 PM
12:00 AM - 12:00 AM

Minor Periods

2:25 PM - 3:55 PM
6:09 AM - 7:39 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Sunny
16°F
1.8°F
7.6°F
70%
0 in
0%
0%
10.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.67 μg/m3
PM10: 1.83 μg/m3
Carbon Monoxide: 160.3 μg/m3
Nitrogen Dioxide: 2.12 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 77.4 μg/m3

Astronomical

Sunrise: 7:58 AM
Sun Transit: 12:51 AM
Sunset: 5:45 PM
Daylight: 9 hrs 48 mins
Moonrise: 4:15 PM
Moon Transit: 12:00 AM
Moonset: 7:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:03 AM - 2:33 PM

Minor Periods

3:45 PM - 5:15 PM
6:56 AM - 8:26 AM

Action Rating: 4 out of 5

Sunday, February 1, 2026

Weather Forecast

Mist
26.6°F
0.9°F
13.2°F
91%
0 in
0%
0%
8.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 2.97 μg/m3
Carbon Monoxide: 175.25 μg/m3
Nitrogen Dioxide: 4.04 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 72.54 μg/m3

Astronomical

Sunrise: 7:56 AM
Sun Transit: 12:51 AM
Sunset: 5:47 PM
Daylight: 9 hrs 50 mins
Moonrise: 5:36 PM
Moon Transit: 12:16 AM
Moonset: 8:02 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:00 PM - 3:30 PM

Minor Periods

5:06 PM - 6:36 PM
7:32 AM - 9:02 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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