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

Current Water Temperature

38.8°F

Measurement Time: Tuesday, April 7, 2026, 6:30 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

27.3°F
Clear
Clear
21°F
26.7°F
58%
S 5.6 mph
8.7 mph
19°F
18°F
0 in
0%
9 mi
1029 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 46°F
L: 23°F
Moderate rain
Thu
H: 57°F
L: 38°F
Moderate rain
Fri
H: 44°F
L: 32°F
Sunny
Sat
H: 50°F
L: 28°F
Patchy rain nearby
Sun
H: 66°F
L: 35°F

Air Quality

PM2.5: 4.35 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 173.85 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:39 PM
Sunset: 8:14 PM
Daylight: 13 hrs 9 mins
Moonrise: 2:29 AM
Moon Transit: 6:27 AM
Moonset: 10:27 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
7:09 PM - 9:39 PM

Minor Periods

9:57 AM - 11:27 AM
1:59 AM - 3:29 AM

Action Rating: 2 out of 5

Wednesday, April 8, 2026

Weather Forecast

Sunny
46.4°F
23.2°F
34.3°F
63%
0 in
0%
0%
16.8 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 5.33 μg/m3
PM10: 6.52 μg/m3
Carbon Monoxide: 189.21 μg/m3
Nitrogen Dioxide: 4.89 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 82.52 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:39 PM
Sunset: 8:14 PM
Daylight: 13 hrs 9 mins
Moonrise: 2:29 AM
Moon Transit: 6:27 AM
Moonset: 10:27 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
7:09 PM - 9:39 PM

Minor Periods

9:57 AM - 11:27 AM
1:59 AM - 3:29 AM

Action Rating: 2 out of 5

Thursday, April 9, 2026

Weather Forecast

Moderate rain
56.5°F
37.9°F
46.1°F
67%
0.67 in
86%
0%
17.4 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.69 μg/m3
PM10: 5.19 μg/m3
Carbon Monoxide: 167.65 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 3.31 μg/m3
Ozone: 91.08 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:39 PM
Sunset: 8:16 PM
Daylight: 13 hrs 12 mins
Moonrise: 3:15 AM
Moon Transit: 7:18 AM
Moonset: 11:26 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

6:48 AM - 9:18 AM
8:00 PM - 10:30 PM

Minor Periods

10:56 AM - 12:26 AM
2:45 AM - 4:15 AM

Action Rating: 4 out of 5

Friday, April 10, 2026

Weather Forecast

Moderate rain
43.5°F
32.4°F
37.6°F
73%
0.27 in
80%
9%
7.6 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 3.03 μg/m3
PM10: 3.1 μg/m3
Carbon Monoxide: 179.3 μg/m3
Nitrogen Dioxide: 3.38 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 81.92 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 1:39 PM
Sunset: 8:17 PM
Daylight: 13 hrs 15 mins
Moonrise: 3:53 AM
Moon Transit: 8:09 AM
Moonset: 12:32 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
8:49 PM - 11:19 PM

Minor Periods

12:02 AM - 1:32 PM
3:23 AM - 4:53 AM

Action Rating: 2 out of 5

Saturday, April 11, 2026

Weather Forecast

Sunny
50.4°F
28.4°F
39.4°F
66%
0 in
0%
0%
8.1 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 3.93 μg/m3
PM10: 4.16 μg/m3
Carbon Monoxide: 194.04 μg/m3
Nitrogen Dioxide: 3.32 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 87.77 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:38 PM
Sunset: 8:18 PM
Daylight: 13 hrs 18 mins
Moonrise: 4:24 AM
Moon Transit: 8:58 AM
Moonset: 1:40 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
12:00 AM - 12:00 AM

Minor Periods

1:10 PM - 2:40 PM
3:54 AM - 5:24 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Patchy rain nearby
65.7°F
35.3°F
45.8°F
81%
0.11 in
89%
0%
17.9 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: 6:59 AM
Sun Transit: 1:38 PM
Sunset: 8:19 PM
Daylight: 13 hrs 21 mins
Moonrise: 4:49 AM
Moon Transit: 9:45 AM
Moonset: 2:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:15 AM - 11:45 AM

Minor Periods

2:21 PM - 3:51 PM
4:19 AM - 5:49 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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