Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

46.0°F

Measurement Time: Wednesday, May 21, 2025, 1:45 AM MDT

Temperature Locations

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Local Points of Interest

Hebgen Lake; West Yellowstone, MT

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Madison River

Station Name: Madison River bl Hebgen Lake nr Grayling MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 6,503 feet / 1,982 meters

Nearest Address:
8998 Hebgen Lake Rd
Grayling, MT 59758
Gallatin County

GPS Coordinates: 44.86639167, -111.3387806

Nearby Water Temperatures

Madison River, Cameron, MT (12.0 mi)
Madison River, West Yellowstone, MT (19.6 mi)
Gibbon River, Yellowstone National Park, WY (28.1 mi)
Firehole River, Yellowstone National Park, WY (28.9 mi)
Yellowstone River, Corwin Springs, MT (31.6 mi)
Tantalus Creek, Yellowstone National Park, WY (32.0 mi)
Madison River, Ennis, MT (32.4 mi)
Boiling River Hot Springs, Yellowstone National Park, WY (32.8 mi)
Firehole River, Yellowstone National Park, WY (37.9 mi)
Madison River, Norris, MT (45.4 mi)
Lamar River, Yellowstone National Park, WY (46.4 mi)
Snake River, Flagg Ranch, WY (62.5 mi)
Ruby River, Twin Bridges, MT (65.5 mi)
Jefferson River, Twin Bridges, MT (70.6 mi)
Big Hole River, Glen, MT (71.3 mi)

Weather for Grayling, Montana

Current Weather

37.8°F
Sunny
Conditions: Sunny
Humidity: 87%
Feels Like: 36.9°F
Wind: SW 2.2 mph
Wind Gusts: 2.6 mph
Pressure: 30.16 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.8

Five Day Weather Forecast

Sunny
Wed
H: 52°F
L: 22°F
Patchy rain nearby
Thu
H: 57°F
L: 29°F
Sunny
Fri
H: 61°F
L: 31°F
Sunny
Sat
H: 65°F
L: 41°F
Sunny
Sun
H: 71°F
L: 41°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:22 PM
Sunset: 8:55 PM
Daylight: 15 hrs 5 mins
Moonrise: 2:56 AM
Moon Transit: 8:32 AM
Moonset: 2:22 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

8:02 AM - 10:32 AM
12:00 AM - 12:00 AM

Minor Periods

1:52 PM - 3:22 PM
2:26 AM - 3:56 AM

Action Rating: 2 out of 5

Frost Advisory issued May 21 at 1:12AM MDT until May 21 at 10:00AM MDT by NWS Pocatello ID

Effective: Wed May 21, 2025, 1:12 AM
Expires: Wed May 21, 2025, 10:00 AM

* WHAT...Temperatures below 37 could harm sensitive outdoor vegetation. * WHERE...Eastern Magic Valley, Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.
Wednesday, May 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 38.8°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 2.2

Air Quality

AQI: 1 - Good
PM2.5: 3.07 μg/m3
PM10: 8.35 μg/m3
Carbon Monoxide: 284.9 μg/m3
Nitrogen Dioxide: 4.31 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 94.38 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:22 PM
Sunset: 8:55 PM
Daylight: 15 hrs 5 mins
Moonrise: 2:56 AM
Moon Transit: 8:32 AM
Moonset: 2:22 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

8:02 AM - 10:32 AM
12:00 AM - 12:00 AM

Minor Periods

1:52 PM - 3:22 PM
2:26 AM - 3:56 AM

Action Rating: 2 out of 5

Thursday, May 22, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 40.6°F
Average Humidity: 68%
Chance of Rain: 73%
Wind: 15.9 mph
UV Index: 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: 5:49 AM
Sun Transit: 1:22 PM
Sunset: 8:56 PM
Daylight: 15 hrs 6 mins
Moonrise: 3:16 AM
Moon Transit: 10:46 AM
Moonset: 3:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

10:16 AM - 12:46 AM
10:16 AM - 12:46 AM

Minor Periods

3:09 PM - 4:39 PM
2:46 AM - 4:16 AM

Action Rating: 2 out of 5

Friday, May 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 47.2°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 3

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: 5:48 AM
Sun Transit: 1:22 PM
Sunset: 8:57 PM
Daylight: 15 hrs 8 mins
Moonrise: 3:35 AM
Moon Transit: 10:09 AM
Moonset: 4:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

7:08 PM - 9:38 PM
9:39 AM - 12:09 AM

Minor Periods

4:29 PM - 5:59 PM
3:05 AM - 4:35 AM

Action Rating: 2 out of 5

Saturday, May 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 52.8°F
Average Humidity: 54%
Chance of Rain: 0%
Wind: 13.6 mph
UV Index: 4

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: 5:47 AM
Sun Transit: 1:22 PM
Sunset: 8:58 PM
Daylight: 15 hrs 10 mins
Moonrise: 3:57 AM
Moon Transit: 11:01 AM
Moonset: 6:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

8:01 PM - 10:31 PM
10:31 AM - 1:01 PM

Minor Periods

5:53 PM - 7:23 PM
3:27 AM - 4:57 AM

Action Rating: 2 out of 5

Sunday, May 25, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.8°F
Average Humidity: 51%
Chance of Rain: 0%
Wind: 4.9 mph
UV Index: 4

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: 5:47 AM
Sun Transit: 1:22 PM
Sunset: 8:59 PM
Daylight: 15 hrs 12 mins
Moonrise: 4:24 AM
Moon Transit: 11:57 AM
Moonset: 7:49 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

8:59 PM - 11:29 PM
11:27 AM - 1:57 PM

Minor Periods

7:19 PM - 8:49 PM
3:54 AM - 5:24 AM

Action Rating: 5 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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