Water Temperature of the South Branch Au Sable River in Grayling, MI
Current Water Temperature
59.5°F
Measurement Time: Friday, May 9, 2025, 2:30 PM EDT
Temperature Locations
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Local Points of Interest
Au Sable State Forest-Grayling Unit; Luzerne, MISponsored Content
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 / 326 meters
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 (20.0 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 (40.0 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
66.4°F

Conditions: Sunny
Humidity: 15%
Feels Like: 66.4°F
Wind: NW 6.5 mph
Wind Gusts: 8.5 mph
Humidity: 15%
Feels Like: 66.4°F
Wind: NW 6.5 mph
Wind Gusts: 8.5 mph
Pressure: 30.09 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.7
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.7
Five Day Weather Forecast

Fri
H: 67°F
L: 33°F

Sat
H: 68°F
L: 43°F

Sun
H: 66°F
L: 42°F

Mon
H: 79°F
L: 49°F

Tue
H: 75°F
L: 53°F
Air Quality
AQI:
2 - Moderate
PM2.5:
6.85 μg/m3
PM10:
7.59 μg/m3
Carbon Monoxide: 336.7 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 74 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 74 μg/m3
Astronomical
Sunrise: 6:17 AM
Sun Transit: 1:34 PM
Sunset: 8:53 PM
Daylight: 14 hrs 36 mins
Sun Transit: 1:34 PM
Sunset: 8:53 PM
Daylight: 14 hrs 36 mins
Moonrise: 6:12 PM
Moon Transit: 11:42 PM
Moonset: 4:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Moon Transit: 11:42 PM
Moonset: 4:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
11:38 AM - 2:08 PM12:00 AM - 12:00 AM
Minor Periods
5:42 PM - 7:12 PM4:17 AM - 5:47 AM
Action Rating: 2 out of 5
Friday, May 9, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 51.7°F
Average Humidity: 45%
Average Temperature: 51.7°F
Average Humidity: 45%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 2
Wind: 7.6 mph
UV Index: 2
Air Quality
AQI:
1 - Good
PM2.5:
8.41 μg/m3
PM10:
9.82 μg/m3
Carbon Monoxide: 308.51 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 79.04 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 79.04 μg/m3
Astronomical
Sunrise: 6:17 AM
Sun Transit: 1:34 PM
Sunset: 8:53 PM
Daylight: 14 hrs 36 mins
Sun Transit: 1:34 PM
Sunset: 8:53 PM
Daylight: 14 hrs 36 mins
Moonrise: 6:12 PM
Moon Transit: 11:42 PM
Moonset: 4:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Moon Transit: 11:42 PM
Moonset: 4:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
11:38 AM - 2:08 PM12:00 AM - 12:00 AM
Minor Periods
5:42 PM - 7:12 PM4:17 AM - 5:47 AM
Action Rating: 2 out of 5
Saturday, May 10, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 56.6°F
Average Humidity: 51%
Average Temperature: 56.6°F
Average Humidity: 51%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 1.6
Wind: 11.6 mph
UV Index: 1.6
Air Quality
AQI:
1 - Good
PM2.5:
6.25 μg/m3
PM10:
6.7 μg/m3
Carbon Monoxide: 305.55 μg/m3
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 85 μg/m3
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 85 μg/m3
Astronomical
Sunrise: 6:16 AM
Sun Transit: 1:34 PM
Sunset: 8:54 PM
Daylight: 14 hrs 38 mins
Sun Transit: 1:34 PM
Sunset: 8:54 PM
Daylight: 14 hrs 38 mins
Moonrise: 7:16 PM
Moon Transit: 12:00 AM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%
Moon Transit: 12:00 AM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:18 AM - 2:48 PM
Minor Periods
6:46 PM - 8:16 PM4:33 AM - 6:03 AM
Action Rating: 3 out of 5
Sunday, May 11, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 53.1°F
Average Humidity: 54%
Average Temperature: 53.1°F
Average Humidity: 54%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 2
Wind: 7.8 mph
UV Index: 2
Air Quality
AQI:
1 - Good
PM2.5:
2.55 μg/m3
PM10:
2.97 μg/m3
Carbon Monoxide: 279.13 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 78.16 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 78.16 μg/m3
Astronomical
Sunrise: 6:14 AM
Sun Transit: 1:34 PM
Sunset: 8:55 PM
Daylight: 14 hrs 41 mins
Sun Transit: 1:34 PM
Sunset: 8:55 PM
Daylight: 14 hrs 41 mins
Moonrise: 8:22 PM
Moon Transit: 12:24 AM
Moonset: 5:22 AM
Moon Phase: Full
Moon Illumination: 99.7%
Moon Transit: 12:24 AM
Moonset: 5:22 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:01 PM - 3:31 PM
Minor Periods
7:52 PM - 9:22 PM4:52 AM - 6:22 AM
Action Rating: 5 out of 5
Monday, May 12, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 62°F
Average Humidity: 51%
Average Temperature: 62°F
Average Humidity: 51%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 2.2
Wind: 8.9 mph
UV Index: 2.2
Air Quality
AQI:
1 - Good
PM2.5:
9.97 μg/m3
PM10:
10.83 μg/m3
Carbon Monoxide: 311.24 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 97.36 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 97.36 μg/m3
Astronomical
Sunrise: 6:13 AM
Sun Transit: 1:34 PM
Sunset: 8:56 PM
Daylight: 14 hrs 43 mins
Sun Transit: 1:34 PM
Sunset: 8:56 PM
Daylight: 14 hrs 43 mins
Moonrise: 9:29 PM
Moon Transit: 1:07 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.7%
Moon Transit: 1:07 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 AM1:46 PM - 4:16 PM
Minor Periods
8:59 PM - 10:29 PM5:15 AM - 6:45 AM
Action Rating: 4 out of 5
Tuesday, May 13, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 63.3°F
Average Humidity: 79%
Average Temperature: 63.3°F
Average Humidity: 79%
Chance of Rain: 89%
Wind: 9.6 mph
UV Index: 2
Wind: 9.6 mph
UV Index: 2
Air Quality
AQI:
2 - Moderate
PM2.5:
20.44 μg/m3
PM10:
20.86 μg/m3
Carbon Monoxide: 395.62 μg/m3
Nitrogen Dioxide: 7.43 μg/m3
Sulphur Dioxide: 6.43 μg/m3
Ozone: 98.15 μg/m3
Nitrogen Dioxide: 7.43 μg/m3
Sulphur Dioxide: 6.43 μg/m3
Ozone: 98.15 μg/m3
Astronomical
Sunrise: 6:12 AM
Sun Transit: 1:34 PM
Sunset: 8:57 PM
Daylight: 14 hrs 45 mins
Sun Transit: 1:34 PM
Sunset: 8:57 PM
Daylight: 14 hrs 45 mins
Moonrise: 10:35 PM
Moon Transit: 1:54 AM
Moonset: 6:13 AM
Moon Phase: Full
Moon Illumination: 97.2%
Moon Transit: 1:54 AM
Moonset: 6:13 AM
Moon Phase: Full
Moon Illumination: 97.2%
Best Times for Fishing or Hunting
Major Periods
1:24 AM - 3:54 AM2:34 PM - 5:04 PM
Minor Periods
10:05 PM - 11:35 PM5:43 AM - 7:13 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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