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

Current Water Temperature

59.5°F

Measurement Time: Thursday, April 23, 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

78.1°F
Sunny
Sunny
78.3°F
77.6°F
41%
S 6.9 mph
8.6 mph
76.9°F
51.5°F
0 in
25%
9 mi
1008 mbar
1.3

Five Day Weather Forecast

Sunny
Thu
H: 78°F
L: 40°F
Moderate rain
Fri
H: 66°F
L: 43°F
Patchy rain nearby
Sat
H: 48°F
L: 38°F
Sunny
Sun
H: 62°F
L: 34°F
Patchy rain nearby
Mon
H: 65°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 12.35 μg/m3
PM10: 12.65 μg/m3
Carbon Monoxide: 217.85 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 3.25 μg/m3
Ozone: 112 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:36 PM
Sunset: 8:33 PM
Daylight: 13 hrs 53 mins
Moonrise: 11:51 AM
Moon Transit: 7:51 PM
Moonset: 3:02 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
7:21 PM - 9:51 PM

Minor Periods

11:21 AM - 12:51 AM
2:32 AM - 4:02 AM

Action Rating: 2 out of 5

Thursday, April 23, 2026

Weather Forecast

Sunny
77.9°F
40.1°F
59°F
43%
0 in
0%
0%
8.7 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 3.58 μg/m3
PM10: 4.07 μg/m3
Carbon Monoxide: 177.57 μg/m3
Nitrogen Dioxide: 2.61 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 105.04 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:36 PM
Sunset: 8:33 PM
Daylight: 13 hrs 53 mins
Moonrise: 11:51 AM
Moon Transit: 7:51 PM
Moonset: 3:02 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
7:21 PM - 9:51 PM

Minor Periods

11:21 AM - 12:51 AM
2:32 AM - 4:02 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Moderate rain
66.1°F
43.3°F
52.4°F
77%
0.6 in
89%
0%
9.8 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 13.54 μg/m3
PM10: 13.88 μg/m3
Carbon Monoxide: 201.05 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 100.72 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:35 PM
Sunset: 8:34 PM
Daylight: 13 hrs 56 mins
Moonrise: 1:08 PM
Moon Transit: 8:43 PM
Moonset: 3:36 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
8:13 PM - 10:43 PM

Minor Periods

12:38 AM - 2:08 PM
3:06 AM - 4:36 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Patchy rain nearby
47.9°F
37.8°F
43.9°F
88%
0.02 in
88%
0%
6.9 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 6.83 μg/m3
PM10: 7.09 μg/m3
Carbon Monoxide: 172.81 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 89.24 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:35 PM
Sunset: 8:36 PM
Daylight: 13 hrs 58 mins
Moonrise: 2:24 PM
Moon Transit: 9:31 PM
Moonset: 4:03 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:01 PM - 11:31 PM

Minor Periods

1:54 PM - 3:24 PM
3:33 AM - 5:03 AM

Action Rating: 3 out of 5

Sunday, April 26, 2026

Weather Forecast

Sunny
61.9°F
33.8°F
46.4°F
68%
0 in
0%
0%
8.3 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 5.12 μg/m3
PM10: 5.85 μg/m3
Carbon Monoxide: 161.76 μg/m3
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 89.8 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 1:35 PM
Sunset: 8:37 PM
Daylight: 14 hrs 1 mins
Moonrise: 3:35 PM
Moon Transit: 10:16 PM
Moonset: 4:25 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:05 PM - 4:35 PM
3:55 AM - 5:25 AM

Action Rating: 2 out of 5

Monday, April 27, 2026

Weather Forecast

Patchy rain nearby
65.1°F
39.2°F
52.3°F
74%
0.03 in
62%
0%
15.9 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 9.9 μg/m3
PM10: 10.1 μg/m3
Carbon Monoxide: 195.43 μg/m3
Nitrogen Dioxide: 2.96 μg/m3
Sulphur Dioxide: 2.6 μg/m3
Ozone: 97.54 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 1:35 PM
Sunset: 8:38 PM
Daylight: 14 hrs 4 mins
Moonrise: 4:44 PM
Moon Transit: 10:58 PM
Moonset: 4:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

10:53 AM - 1:23 PM
12:00 AM - 12:00 AM

Minor Periods

4:14 PM - 5:44 PM
4:14 AM - 5:44 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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