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

Current Water Temperature

56.1°F

Measurement Time: Wednesday, April 22, 2026, 11:30 AM 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

73.6°F
Sunny
Sunny
72.8°F
71.1°F
13%
NE 3.4 mph
3.9 mph
71°F
24.9°F
0 in
0%
9 mi
1014 mbar
2.7

Five Day Weather Forecast

Sunny
Wed
H: 72°F
L: 35°F
Sunny
Thu
H: 66°F
L: 41°F
Moderate rain
Fri
H: 61°F
L: 45°F
Cloudy
Sat
H: 61°F
L: 41°F
Partly Cloudy
Sun
H: 63°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 3.75 μg/m3
Carbon Monoxide: 183.85 μg/m3
Nitrogen Dioxide: 4.45 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 85 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:36 PM
Sunset: 8:32 PM
Daylight: 13 hrs 50 mins
Moonrise: 10:34 AM
Moon Transit: 6:53 PM
Moonset: 2:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:38 AM - 9:08 AM
6:23 PM - 8:53 PM

Minor Periods

10:04 AM - 11:34 AM
1:46 AM - 3:16 AM

Action Rating: 4 out of 5

Flood Warning issued April 21 at 2:33PM EDT until April 22 at 7:45PM EDT by NWS Gaylord MI

Effective: Tue April 21, 2026, 2:33 PM
Expires: Wed April 22, 2026, 7:45 PM

* WHAT...Existing water from heavy rainfall last week is routing through the streams, rivers and lakes. Water is gradually receding, but is still flooding low lying areas, creeks, streams, rivers, and lakes. * WHERE...A portion of northern Michigan, including the following counties, Crawford, Kalkaska, Missaukee and Roscommon. * WHEN...Until 745 PM EDT Wednesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is occurring. Expect many areas of slow moving or standing water. * ADDITIONAL DETAILS... - At 233 PM EDT, Flooding is already occurring in the warned area. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.


Flood Warning issued April 21 at 2:31PM EDT until April 22 at 7:45PM EDT by NWS Gaylord MI

Effective: Tue April 21, 2026, 2:31 PM
Expires: Wed April 22, 2026, 7:45 PM

* WHAT...Existing water from heavy rainfall last week is routing through the streams, rivers and lakes. Water is gradually receding, but is still flooding low lying areas, creeks, streams, and rivers. * WHERE...A portion of northern Michigan, including the following counties, Crawford, Grand Traverse, Kalkaska, Missaukee and Wexford. * WHEN...Until 745 PM EDT Wednesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is occurring. Several structures are flooded and roads remain closed due to flooding. Expect areas of slow moving or standing water. * ADDITIONAL DETAILS... - At 231 PM EDT, emergency management reported flooding ongoing in the warned area. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.


Flood Warning issued April 22 at 10:55AM EDT until April 22 at 7:45PM EDT by NWS Gaylord MI

Effective: Wed April 22, 2026, 10:55 AM
Expires: Wed April 22, 2026, 7:45 PM

* WHAT...Existing water from heavy rainfall last week is routing through the streams, rivers and lakes. Water is gradually receding, but is still flooding low lying areas, creeks, streams, and rivers. * WHERE...A portion of northern Michigan, including the following counties, Crawford, Grand Traverse, Kalkaska, Missaukee and Wexford. * WHEN...Until 745 PM EDT Wednesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is occurring. Several structures are flooded and roads remain closed due to flooding. Expect areas of slow moving or standing water. * ADDITIONAL DETAILS... - At 1045 AM EDT, emergency management reported flooding ongoing in the warned area. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.


Flood Warning issued April 22 at 10:55AM EDT until April 22 at 7:45PM EDT by NWS Gaylord MI

Effective: Wed April 22, 2026, 10:55 AM
Expires: Wed April 22, 2026, 7:45 PM

* WHAT...Existing water from heavy rainfall last week is routing through the streams, rivers and lakes. Water is gradually receding, but is still flooding low lying areas, creeks, streams, rivers, and lakes. * WHERE...A portion of northern Michigan, including the following counties, Crawford, Kalkaska, Missaukee and Roscommon. * WHEN...Until 745 PM EDT Wednesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is occurring. Expect many areas of slow moving or standing water. * ADDITIONAL DETAILS... - At 1045 AM EDT, Flooding is already occurring in the warned area. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.


Wednesday, April 22, 2026

Weather Forecast

Sunny
71.8°F
35.1°F
53.9°F
49%
0 in
0%
0%
5.6 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 4.99 μg/m3
PM10: 5.7 μg/m3
Carbon Monoxide: 174.37 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 92.28 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:36 PM
Sunset: 8:32 PM
Daylight: 13 hrs 50 mins
Moonrise: 10:34 AM
Moon Transit: 6:53 PM
Moonset: 2:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:38 AM - 9:08 AM
6:23 PM - 8:53 PM

Minor Periods

10:04 AM - 11:34 AM
1:46 AM - 3:16 AM

Action Rating: 4 out of 5

Thursday, April 23, 2026

Weather Forecast

Sunny
66.2°F
40.8°F
52.7°F
57%
0 in
0%
0%
10.1 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 3.77 μg/m3
PM10: 4.32 μg/m3
Carbon Monoxide: 176.85 μg/m3
Nitrogen Dioxide: 2.84 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 102.12 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
61.2°F
44.5°F
49.8°F
82%
0.21 in
88%
0%
13.4 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 10.81 μg/m3
PM10: 11.2 μg/m3
Carbon Monoxide: 189.97 μg/m3
Nitrogen Dioxide: 3.78 μg/m3
Sulphur Dioxide: 2.93 μg/m3
Ozone: 94.96 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

Cloudy
61.1°F
41°F
48.9°F
73%
0 in
0%
0%
12.3 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 6.83 μg/m3
Carbon Monoxide: 168.14 μg/m3
Nitrogen Dioxide: 3.51 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 88.72 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

Partly Cloudy
62.7°F
35.8°F
48.6°F
72%
0 in
0%
0%
7.4 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 1.75 μg/m3
PM10: 1.8 μg/m3
Carbon Monoxide: 171.88 μg/m3
Nitrogen Dioxide: 2.17 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 75.46 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

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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