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

Current Water Temperature

32.4°F

Measurement Time: Saturday, January 31, 2026, 9:30 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

-5.1°F
Clear
Clear
-11.3°F
-2.7°F
82%
WNW 2.5 mph
5.2 mph
-10.4°F
-11.7°F
0 in
0%
9 mi
1025 mbar
0

Five Day Weather Forecast

Overcast
Sun
H: 29°F
L: -6°F
Overcast
Mon
H: 24°F
L: 15°F
Partly Cloudy
Tue
H: 19°F
L: 10°F
Cloudy
Wed
H: 23°F
L: 4°F
Freezing fog
Thu
H: 25°F
L: 6°F

Air Quality

AQI: 1 - Good
PM2.5: 3.55 μg/m3
PM10: 3.55 μg/m3
Carbon Monoxide: 179.85 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 76 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

Sunday, February 1, 2026

Weather Forecast

Overcast
28.6°F
-6.2°F
9.1°F
76%
0 in
0%
0%
4.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.18 μg/m3
PM10: 2.22 μg/m3
Carbon Monoxide: 176.97 μg/m3
Nitrogen Dioxide: 3.58 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 79.48 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

Monday, February 2, 2026

Weather Forecast

Overcast
24.1°F
15.1°F
19.1°F
85%
0 in
0%
0%
8.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.79 μg/m3
PM10: 2.79 μg/m3
Carbon Monoxide: 201.77 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 70.48 μg/m3

Astronomical

Sunrise: 7:55 AM
Sun Transit: 12:51 AM
Sunset: 5:48 PM
Daylight: 9 hrs 53 mins
Moonrise: 6:55 PM
Moon Transit: 1:11 AM
Moonset: 8:30 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
1:52 PM - 4:22 PM

Minor Periods

6:25 PM - 7:55 PM
8:00 AM - 9:30 AM

Action Rating: 4 out of 5

Tuesday, February 3, 2026

Weather Forecast

Partly Cloudy
19.4°F
10.4°F
14.5°F
78%
0 in
0%
0%
11.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.35 μg/m3
PM10: 1.37 μg/m3
Carbon Monoxide: 165.65 μg/m3
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 75.4 μg/m3

Astronomical

Sunrise: 7:54 AM
Sun Transit: 12:51 AM
Sunset: 5:50 PM
Daylight: 9 hrs 55 mins
Moonrise: 8:10 PM
Moon Transit: 2:01 AM
Moonset: 8:52 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
2:40 PM - 5:10 PM

Minor Periods

7:40 PM - 9:10 PM
8:22 AM - 9:52 AM

Action Rating: 4 out of 5

Wednesday, February 4, 2026

Weather Forecast

Cloudy
23.4°F
4.2°F
13.4°F
85%
0 in
0%
3%
8.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.67 μg/m3
PM10: 1.71 μg/m3
Carbon Monoxide: 159.26 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 76.68 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:51 AM
Sunset: 5:51 PM
Daylight: 9 hrs 58 mins
Moonrise: 9:20 PM
Moon Transit: 2:47 AM
Moonset: 9:11 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

2:17 AM - 4:47 AM
3:25 PM - 5:55 PM

Minor Periods

8:50 PM - 10:20 PM
8:41 AM - 10:11 AM

Action Rating: 4 out of 5

Thursday, February 5, 2026

Weather Forecast

Freezing fog
25.2°F
5.5°F
14.9°F
93%
0.01 in
80%
27%
11.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.43 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 186.66 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 77.85 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:51 AM
Sunset: 5:52 PM
Daylight: 10 hrs 1 mins
Moonrise: 10:29 PM
Moon Transit: 3:30 AM
Moonset: 9:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

3:00 AM - 5:30 AM
4:07 PM - 6:37 PM

Minor Periods

9:59 PM - 11:29 PM
8:58 AM - 10:28 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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