Water Temperature of the South Branch Au Sable River in Grayling, MI
Current Water Temperature
39.7°F
Measurement Time: Monday, March 9, 2026, 9:30 AM EDT
Temperature Locations
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Local Points of Interest
Au Sable State Forest-Grayling Unit; Luzerne, MISouth 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
61°F

Sunny
61°F
64.4°F
41%
WSW 13.4 mph
15.4 mph
64.3°F
44.3°F
0 in
0%
9 mi
1004 mbar
2.8
Five Day Weather Forecast

Mon
H: 66°F
L: 41°F

Tue
H: 35°F
L: 30°F

Wed
H: 31°F
L: 27°F

Thu
H: 29°F
L: 25°F

Fri
H: 35°F
L: 23°F
Air Quality
AQI:
1 - Good
PM2.5:
4.35 μg/m3
PM10:
4.55 μg/m3
Carbon Monoxide: 169.85 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 79 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 79 μg/m3
Astronomical
Sunrise: 8:01 AM
Sun Transit: 1:48 PM
Sunset: 7:36 PM
Daylight: 11 hrs 35 mins
Sun Transit: 1:48 PM
Sunset: 7:36 PM
Daylight: 11 hrs 35 mins
Moonrise: 1:40 AM
Moon Transit: 6:04 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%
Moon Transit: 6:04 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%
Best Times for Fishing or Hunting
Major Periods
5:34 AM - 8:04 AM6:44 PM - 9:14 PM
Minor Periods
9:52 AM - 11:22 AM1:10 AM - 2:40 AM
Action Rating: 3 out of 5
Monday, March 9, 2026
Weather Forecast
Sunny
65.5°F
41.2°F
52.6°F
61%
0 in
0%
0%
15 mph
0.8
Air Quality
AQI:
1 - Good
PM2.5:
4.44 μg/m3
PM10:
5.07 μg/m3
Carbon Monoxide: 169.69 μg/m3
Nitrogen Dioxide: 3.46 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 82.12 μg/m3
Nitrogen Dioxide: 3.46 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 82.12 μg/m3
Astronomical
Sunrise: 8:01 AM
Sun Transit: 1:48 PM
Sunset: 7:36 PM
Daylight: 11 hrs 35 mins
Sun Transit: 1:48 PM
Sunset: 7:36 PM
Daylight: 11 hrs 35 mins
Moonrise: 1:40 AM
Moon Transit: 6:04 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%
Moon Transit: 6:04 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%
Best Times for Fishing or Hunting
Major Periods
5:34 AM - 8:04 AM6:44 PM - 9:14 PM
Minor Periods
9:52 AM - 11:22 AM1:10 AM - 2:40 AM
Action Rating: 3 out of 5
Tuesday, March 10, 2026
Weather Forecast
Moderate or heavy snow showers
34.7°F
29.8°F
33.7°F
84%
0.09 in
77%
9%
15 mph
0.5
Air Quality
AQI:
1 - Good
PM2.5:
2.59 μg/m3
PM10:
2.7 μg/m3
Carbon Monoxide: 162.65 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 78.16 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 78.16 μg/m3
Astronomical
Sunrise: 7:59 AM
Sun Transit: 1:48 PM
Sunset: 7:37 PM
Daylight: 11 hrs 38 mins
Sun Transit: 1:48 PM
Sunset: 7:37 PM
Daylight: 11 hrs 38 mins
Moonrise: 2:46 AM
Moon Transit: 6:53 AM
Moonset: 10:58 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%
Moon Transit: 6:53 AM
Moonset: 10:58 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%
Best Times for Fishing or Hunting
Major Periods
6:23 AM - 8:53 AM7:34 PM - 10:04 PM
Minor Periods
10:28 AM - 11:58 AM2:16 AM - 3:46 AM
Action Rating: 3 out of 5
Wednesday, March 11, 2026
Weather Forecast
Moderate or heavy snow showers
30.7°F
27°F
28.6°F
84%
2.02 in
82%
34%
17 mph
0.1
Air Quality
AQI:
1 - Good
PM2.5:
2.01 μg/m3
PM10:
2.11 μg/m3
Carbon Monoxide: 169.25 μg/m3
Nitrogen Dioxide: 2.14 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 80.44 μg/m3
Nitrogen Dioxide: 2.14 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 80.44 μg/m3
Astronomical
Sunrise: 7:57 AM
Sun Transit: 1:47 PM
Sunset: 7:39 PM
Daylight: 11 hrs 41 mins
Sun Transit: 1:47 PM
Sunset: 7:39 PM
Daylight: 11 hrs 41 mins
Moonrise: 3:45 AM
Moon Transit: 7:44 AM
Moonset: 11:43 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%
Moon Transit: 7:44 AM
Moonset: 11:43 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%
Best Times for Fishing or Hunting
Major Periods
7:14 AM - 9:44 AM8:26 PM - 10:56 PM
Minor Periods
11:13 AM - 12:43 AM3:15 AM - 4:45 AM
Action Rating: 2 out of 5
Thursday, March 12, 2026
Weather Forecast
Overcast
29.1°F
24.8°F
26.8°F
69%
0 in
0%
15%
15.7 mph
0.6
Air Quality
AQI:
1 - Good
PM2.5:
1.94 μg/m3
PM10:
2.55 μg/m3
Carbon Monoxide: 162.21 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 94.2 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 94.2 μg/m3
Astronomical
Sunrise: 7:55 AM
Sun Transit: 1:47 PM
Sunset: 7:40 PM
Daylight: 11 hrs 45 mins
Sun Transit: 1:47 PM
Sunset: 7:40 PM
Daylight: 11 hrs 45 mins
Moonrise: 4:37 AM
Moon Transit: 8:36 AM
Moonset: 12:38 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%
Moon Transit: 8:36 AM
Moonset: 12:38 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%
Best Times for Fishing or Hunting
Major Periods
8:06 AM - 10:36 AM9:18 PM - 11:48 PM
Minor Periods
12:08 AM - 1:38 PM4:07 AM - 5:37 AM
Action Rating: 3 out of 5
Friday, March 13, 2026
Weather Forecast
Heavy snow
35.3°F
23.3°F
28.1°F
86%
0.75 in
63%
45%
18.1 mph
0
Air Quality
AQI:
1 - Good
PM2.5:
3.33 μg/m3
PM10:
4.5 μg/m3
Carbon Monoxide: 189.52 μg/m3
Nitrogen Dioxide: 2.97 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 83.85 μg/m3
Nitrogen Dioxide: 2.97 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 83.85 μg/m3
Astronomical
Sunrise: 7:54 AM
Sun Transit: 1:47 PM
Sunset: 7:41 PM
Daylight: 11 hrs 48 mins
Sun Transit: 1:47 PM
Sunset: 7:41 PM
Daylight: 11 hrs 48 mins
Moonrise: 5:20 AM
Moon Transit: 9:28 AM
Moonset: 1:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%
Moon Transit: 9:28 AM
Moonset: 1:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%
Best Times for Fishing or Hunting
Major Periods
8:58 AM - 11:28 AM12:00 AM - 12:00 AM
Minor Periods
1:10 PM - 2:40 PM4:50 AM - 6:20 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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