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

Current Water Temperature

33.1°F

Measurement Time: Saturday, January 17, 2026, 11:30 AM 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

23.4°F
Patchy light snow
Patchy light snow
14.9°F
28.2°F
86%
SW 7.2 mph
9.1 mph
20.5°F
24.8°F
0 in
100%
4 mi
1009 mbar
0

Five Day Weather Forecast

Cloudy
Sat
H: 29°F
L: 22°F
Light snow
Sun
H: 20°F
L: 14°F
Moderate snow
Mon
H: 15°F
L: 7°F
Moderate or heavy snow showers
Tue
H: 3°F
L: -1°F
Light freezing rain
Wed
H: 12°F
L: 1°F

Air Quality

PM2.5: 1.65 μg/m3
PM10: 1.65 μg/m3
Carbon Monoxide: 177.65 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 8:10 AM
Sun Transit: 12:48 AM
Sunset: 5:26 PM
Daylight: 9 hrs 16 mins
Moonrise: 7:49 AM
Moon Transit: 11:55 AM
Moonset: 4:06 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:25 AM - 1:55 PM

Minor Periods

3:36 PM - 5:06 PM
7:19 AM - 8:49 AM

Action Rating: 4 out of 5

Saturday, January 17, 2026

Weather Forecast

Cloudy
29.1°F
21.7°F
25.1°F
86%
0 in
0%
6%
9.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.47 μg/m3
PM10: 1.47 μg/m3
Carbon Monoxide: 169.95 μg/m3
Nitrogen Dioxide: 2.7 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 73.92 μg/m3

Astronomical

Sunrise: 8:10 AM
Sun Transit: 12:48 AM
Sunset: 5:26 PM
Daylight: 9 hrs 16 mins
Moonrise: 7:49 AM
Moon Transit: 11:55 AM
Moonset: 4:06 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:25 AM - 1:55 PM

Minor Periods

3:36 PM - 5:06 PM
7:19 AM - 8:49 AM

Action Rating: 4 out of 5

Sunday, January 18, 2026

Weather Forecast

Light snow
20.4°F
13.9°F
17.6°F
84%
0.04 in
67%
57%
9.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.77 μg/m3
PM10: 1.77 μg/m3
Carbon Monoxide: 179.18 μg/m3
Nitrogen Dioxide: 3.37 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 64.62 μg/m3

Astronomical

Sunrise: 8:09 AM
Sun Transit: 12:48 AM
Sunset: 5:27 PM
Daylight: 9 hrs 18 mins
Moonrise: 8:27 AM
Moon Transit: 12:47 AM
Moonset: 5:14 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:17 AM - 2:47 PM

Minor Periods

4:44 PM - 6:14 PM
7:57 AM - 9:27 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Moderate snow
14.9°F
7.2°F
12.9°F
87%
0.08 in
79%
63%
11.9 mph
0


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: 8:09 AM
Sun Transit: 12:48 AM
Sunset: 5:29 PM
Daylight: 9 hrs 20 mins
Moonrise: 8:56 AM
Moon Transit: 1:36 PM
Moonset: 6:26 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
1:06 PM - 3:36 PM

Minor Periods

5:56 PM - 7:26 PM
8:26 AM - 9:56 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Moderate or heavy snow showers
3.2°F
-1.2°F
2.5°F
83%
0.02 in
63%
33%
9.8 mph
1


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: 8:08 AM
Sun Transit: 12:48 AM
Sunset: 5:30 PM
Daylight: 9 hrs 22 mins
Moonrise: 9:20 AM
Moon Transit: 2:23 PM
Moonset: 7:37 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:16 AM - 4:46 AM
1:53 PM - 4:23 PM

Minor Periods

7:07 PM - 8:37 PM
8:50 AM - 10:20 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Light freezing rain
11.8°F
1.3°F
6.9°F
87%
0.02 in
81%
56%
8.7 mph
1


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: 8:07 AM
Sun Transit: 12:49 AM
Sunset: 5:31 PM
Daylight: 9 hrs 24 mins
Moonrise: 9:41 AM
Moon Transit: 3:09 PM
Moonset: 8:48 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
2:39 PM - 5:09 PM

Minor Periods

8:18 PM - 9:48 PM
9:11 AM - 10:41 AM

Action Rating: 3 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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