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

Current Water Temperature

33.3°F

Measurement Time: Wednesday, January 14, 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

12.7°F
Light snow
Light snow
-2.9°F
8.8°F
78%
NNW 14.5 mph
16.7 mph
-6.8°F
3.1°F
0.01 in
100%
2 mi
1006 mbar
0

Five Day Weather Forecast

Light freezing rain
Wed
H: 26°F
L: 8°F
Cloudy
Thu
H: 18°F
L: 7°F
Patchy moderate snow
Fri
H: 26°F
L: 18°F
Light snow
Sat
H: 26°F
L: 11°F
Patchy moderate snow
Sun
H: 13°F
L: 6°F

Air Quality

AQI: 1 - Good
PM2.5: 1.25 μg/m3
PM10: 1.35 μg/m3
Carbon Monoxide: 146.85 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 8:12 AM
Sun Transit: 12:46 AM
Sunset: 5:22 PM
Daylight: 9 hrs 10 mins
Moonrise: 5:08 AM
Moon Transit: 9:19 AM
Moonset: 1:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

8:49 AM - 11:19 AM
12:00 AM - 12:00 AM

Minor Periods

12:57 AM - 2:27 PM
4:38 AM - 6:08 AM

Action Rating: 2 out of 5

Wednesday, January 14, 2026

Weather Forecast

Light freezing rain
26.1°F
8.2°F
18.5°F
81%
0.07 in
87%
43%
15.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.36 μg/m3
PM10: 1.41 μg/m3
Carbon Monoxide: 163.13 μg/m3
Nitrogen Dioxide: 1.79 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 74.52 μg/m3

Astronomical

Sunrise: 8:12 AM
Sun Transit: 12:46 AM
Sunset: 5:22 PM
Daylight: 9 hrs 10 mins
Moonrise: 5:08 AM
Moon Transit: 9:19 AM
Moonset: 1:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

8:49 AM - 11:19 AM
12:00 AM - 12:00 AM

Minor Periods

12:57 AM - 2:27 PM
4:38 AM - 6:08 AM

Action Rating: 2 out of 5

Thursday, January 15, 2026

Weather Forecast

Cloudy
18.1°F
7.2°F
12.3°F
66%
0 in
0%
0%
13.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.32 μg/m3
PM10: 1.41 μg/m3
Carbon Monoxide: 148.21 μg/m3
Nitrogen Dioxide: 1.96 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 75.28 μg/m3

Astronomical

Sunrise: 8:11 AM
Sun Transit: 12:47 AM
Sunset: 5:24 PM
Daylight: 9 hrs 12 mins
Moonrise: 6:10 AM
Moon Transit: 10:10 AM
Moonset: 2:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:40 AM - 12:10 AM

Minor Periods

1:41 PM - 3:11 PM
5:40 AM - 7:10 AM

Action Rating: 2 out of 5

Friday, January 16, 2026

Weather Forecast

Patchy moderate snow
25.5°F
17.8°F
21°F
83%
0.03 in
72%
6%
11.6 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 3.11 μg/m3
Carbon Monoxide: 172.17 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 66.08 μg/m3

Astronomical

Sunrise: 8:11 AM
Sun Transit: 12:47 AM
Sunset: 5:25 PM
Daylight: 9 hrs 14 mins
Moonrise: 7:04 AM
Moon Transit: 11:03 AM
Moonset: 3:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:33 AM - 1:03 PM

Minor Periods

2:34 PM - 4:04 PM
6:34 AM - 8:04 AM

Action Rating: 3 out of 5

Saturday, January 17, 2026

Weather Forecast

Light snow
26.3°F
10.8°F
22.8°F
91%
0.12 in
73%
72%
10.7 mph
0


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

Patchy moderate snow
12.9°F
6.4°F
11°F
85%
0.03 in
67%
57%
10.3 mph
1


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

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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