Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

34.9°F

Measurement Time: Wednesday, December 24, 2025, 5:45 PM MST

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

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 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 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

33.7°F
Light snow showers
Conditions: Light snow showers
Humidity: 97%
Heat Index: 33.7°F
Feels Like: 29°F
Wind: SSE 3.7 mph
Wind Gusts: 9 mph
Wind Chill: 29°F
Air Pressure: 1006.67 millibars
Dew Point: 29°F
Chance of Precipitation: 39%
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 3 mi
UV Index: 0

Five Day Weather Forecast

Thundery outbreaks in nearby
Thu
H: 35°F
L: 27°F
Moderate or heavy snow in area with thunder
Fri
H: 32°F
L: 21°F
Moderate or heavy snow showers
Sat
H: 19°F
L: -8°F
Light freezing rain
Sun
H: 17°F
L: -11°F
Light snow
Mon
H: 24°F
L: -3°F

Air Quality

PM2.5: 0.85 μg/m3
PM10: 0.85 μg/m3
Carbon Monoxide: 113.85 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 8:02 AM
Sun Transit: 12:25 AM
Sunset: 4:50 PM
Daylight: 8 hrs 48 mins
Moonrise: 11:25 AM
Moon Transit: 5:00 PM
Moonset: 10:49 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

1:12 AM - 3:42 AM
4:30 PM - 7:00 PM

Minor Periods

10:19 PM - 11:49 PM
10:55 AM - 12:25 AM

Action Rating: 3 out of 5

High Wind Warning issued December 24 at 1:53PM MST until December 24 at 8:00PM MST by NWS Great Falls MT

Effective: Wed December 24, 2025, 1:53 PM
Expires: Wed December 24, 2025, 8:00 PM

* WHAT...Southerly winds 35 to 45 mph, with gusts up to 65 mph expected. * WHERE...Madison River Valley. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles.

People are urged to secure loose objects that could be blown around or damaged by the wind.
Thursday, December 25, 2025

Weather Forecast

Conditions: Thundery outbreaks in nearby
Average Temperature: 31.2°F
Average Humidity: 98%
Chance of Rain: 88%
Wind: 15.9 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.37 μg/m3
PM10: 1.48 μg/m3
Carbon Monoxide: 114.61 μg/m3
Nitrogen Dioxide: 1.97 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 80.72 μg/m3

Astronomical

Sunrise: 8:02 AM
Sun Transit: 12:25 AM
Sunset: 4:50 PM
Daylight: 8 hrs 48 mins
Moonrise: 11:25 AM
Moon Transit: 5:00 PM
Moonset: 10:49 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

1:12 AM - 3:42 AM
4:30 PM - 7:00 PM

Minor Periods

10:19 PM - 11:49 PM
10:55 AM - 12:25 AM

Action Rating: 3 out of 5

Friday, December 26, 2025

Weather Forecast

Conditions: Moderate or heavy snow in area with thunder
Average Temperature: 25.8°F
Average Humidity: 95%
Chance of Rain: 80%
Wind: 14.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.39 μg/m3
PM10: 3.06 μg/m3
Carbon Monoxide: 130.29 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 84.6 μg/m3

Astronomical

Sunrise: 8:02 AM
Sun Transit: 12:26 AM
Sunset: 4:50 PM
Daylight: 8 hrs 48 mins
Moonrise: 11:43 AM
Moon Transit: 5:45 PM
Moonset: 12:01 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

1:57 AM - 4:27 AM
5:15 PM - 7:45 PM

Minor Periods

12:00 AM - 12:00 AM
11:13 AM - 12:43 AM

Action Rating: 3 out of 5

Saturday, December 27, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 12.1°F
Average Humidity: 84%
Chance of Rain: 81%
Wind: 8.1 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.14 μg/m3
PM10: 2.74 μg/m3
Carbon Monoxide: 133.72 μg/m3
Nitrogen Dioxide: 1.76 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 98.76 μg/m3

Astronomical

Sunrise: 8:03 AM
Sun Transit: 12:26 AM
Sunset: 4:51 PM
Daylight: 8 hrs 49 mins
Moonrise: 12:02 AM
Moon Transit: 2:23 AM
Moonset: 12:01 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
1:53 AM - 4:23 AM

Minor Periods

11:32 AM - 1:02 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, December 28, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: -0.1°F
Average Humidity: 93%
Chance of Rain: 75%
Wind: 5.4 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.07 μg/m3
PM10: 2.41 μg/m3
Carbon Monoxide: 141.26 μg/m3
Nitrogen Dioxide: 2.33 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 99.46 μg/m3

Astronomical

Sunrise: 8:03 AM
Sun Transit: 12:27 AM
Sunset: 4:52 PM
Daylight: 8 hrs 49 mins
Moonrise: 12:22 AM
Moon Transit: 7:18 PM
Moonset: 1:14 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:48 PM - 9:18 PM

Minor Periods

11:52 AM - 1:22 PM
12:44 AM - 2:14 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Light snow
Average Temperature: 5.1°F
Average Humidity: 97%
Chance of Rain: 66%
Wind: 5.8 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: 8:03 AM
Sun Transit: 12:27 AM
Sunset: 4:53 PM
Daylight: 8 hrs 50 mins
Moonrise: 12:46 AM
Moon Transit: 8:11 PM
Moonset: 2:33 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

4:17 AM - 6:47 AM
7:41 PM - 10:11 PM

Minor Periods

12:16 AM - 1:46 PM
2:03 AM - 3:33 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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