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

Current Water Temperature

72.5°F

Measurement Time: Wednesday, July 15, 2026, 12:30 PM EDT

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

85.1°F
Mist
Mist
86°F
86.3°F
52%
NW 11.2 mph
12.9 mph
85.3°F
61.1°F
0 in
100%
3 mi
1017 mbar
1.6

Five Day Weather Forecast

Sunny
Wed
H: 92°F
L: 70°F
Sunny
Thu
H: 88°F
L: 63°F
Sunny
Fri
H: 87°F
L: 63°F
Patchy rain nearby
Sat
H: 78°F
L: 62°F
Sunny
Sun
H: 77°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 7.7 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 99 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:43 PM
Sunset: 9:20 PM
Daylight: 15 hrs 13 mins
Moonrise: 7:23 AM
Moon Transit: 3:05 PM
Moonset: 10:31 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
2:35 PM - 5:05 PM

Minor Periods

10:01 PM - 11:31 PM
6:53 AM - 8:23 AM

Action Rating: 3 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
91.8°F
70.3°F
79.3°F
63%
0 in
4%
0%
12.3 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.18 μg/m3
PM10: 7.46 μg/m3
Carbon Monoxide: 131 μg/m3
Nitrogen Dioxide: 1.52 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 96.5 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:43 PM
Sunset: 9:20 PM
Daylight: 15 hrs 13 mins
Moonrise: 7:23 AM
Moon Transit: 3:05 PM
Moonset: 10:31 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
2:35 PM - 5:05 PM

Minor Periods

10:01 PM - 11:31 PM
6:53 AM - 8:23 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
87.5°F
62.6°F
74.1°F
50%
0 in
2%
0%
9.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 9.48 μg/m3
PM10: 9.68 μg/m3
Carbon Monoxide: 142.58 μg/m3
Nitrogen Dioxide: 1.57 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 84.33 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:43 PM
Sunset: 9:19 PM
Daylight: 15 hrs 11 mins
Moonrise: 8:46 AM
Moon Transit: 3:58 PM
Moonset: 10:55 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
3:28 PM - 5:58 PM

Minor Periods

10:25 PM - 11:55 PM
8:16 AM - 9:46 AM

Action Rating: 4 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
87.2°F
63°F
72°F
60%
0.01 in
17%
0%
6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 10.19 μg/m3
PM10: 10.63 μg/m3
Carbon Monoxide: 131.67 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 83.88 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:44 PM
Sunset: 9:19 PM
Daylight: 15 hrs 10 mins
Moonrise: 10:04 AM
Moon Transit: 4:46 PM
Moonset: 11:15 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
4:16 PM - 6:46 PM

Minor Periods

12:00 AM - 12:00 AM
9:34 AM - 11:04 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Patchy rain nearby
77.7°F
61.9°F
66.6°F
92%
1.17 in
89%
0%
15.7 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 5.46 μg/m3
PM10: 5.62 μg/m3
Carbon Monoxide: 143.8 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 96.96 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:44 PM
Sunset: 9:18 PM
Daylight: 15 hrs 8 mins
Moonrise: 11:17 AM
Moon Transit: 5:32 PM
Moonset: 12:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
5:02 PM - 7:32 PM

Minor Periods

10:47 AM - 12:17 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
76.9°F
53°F
65.1°F
59%
0 in
3%
0%
9.6 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 6.96 μg/m3
PM10: 7.01 μg/m3
Carbon Monoxide: 182.89 μg/m3
Nitrogen Dioxide: 1.59 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 66.56 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:44 PM
Sunset: 9:17 PM
Daylight: 15 hrs 6 mins
Moonrise: 12:28 AM
Moon Transit: 6:16 PM
Moonset: 12:34 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
5:46 PM - 8:16 PM

Minor Periods

11:58 AM - 1:28 PM
12:00 AM - 12:00 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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