Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

44.1°F

Measurement Time: Thursday, May 8, 2025, 3:45 PM 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

43°F
Thundery outbreaks in nearby
Conditions: Thundery outbreaks in nearby
Humidity: 87%
Feels Like: 40.5°F
Wind: SSE 4.3 mph
Wind Gusts: 8.9 mph
Pressure: 30.36 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Thundery outbreaks in nearby
Thu
H: 60°F
L: 26°F
Sunny
Fri
H: 65°F
L: 35°F
Sunny
Sat
H: 70°F
L: 46°F
Moderate rain
Sun
H: 60°F
L: 39°F
Moderate rain
Mon
H: 48°F
L: 34°F

Air Quality

AQI: 2 - Moderate
PM2.5: 12.03 μg/m3
PM10: 18.87 μg/m3
Carbon Monoxide: 251.6 μg/m3
Nitrogen Dioxide: 7.77 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 100 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:21 PM
Sunset: 8:40 PM
Daylight: 14 hrs 35 mins
Moonrise: 5:01 PM
Moon Transit: 10:53 PM
Moonset: 4:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
12:00 AM - 12:00 AM

Minor Periods

4:31 PM - 6:01 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Special Weather Statement issued May 8 at 6:10PM MDT by NWS Pocatello ID

Effective: Thu May 8, 2025, 6:10 PM
Expires: Thu May 8, 2025, 6:45 PM

At 607 PM MDT, Doppler radar was tracking a very small but strong thunderstorm near Southeast Idaho National Laboratory, or 19 miles southwest of Terreton, moving east at 20 MPH. HAZARD...Wind gusts of 45 to 55 MPH. A wind gust to 54 MPH was recently recorded on a weather station on the Idaho National Laboratory site at 600 PM. SOURCE...Radar indicated and weather station confirmed. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Kettle Butte and Southeast INL.

If outdoors, consider seeking shelter inside a building.
Thursday, May 8, 2025

Weather Forecast

Conditions: Thundery outbreaks in nearby
Average Temperature: 44.8°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 6 mph
UV Index: 2.2

Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 11.66 μg/m3
Carbon Monoxide: 264.77 μg/m3
Nitrogen Dioxide: 3.29 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 113 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:21 PM
Sunset: 8:40 PM
Daylight: 14 hrs 35 mins
Moonrise: 5:01 PM
Moon Transit: 10:53 PM
Moonset: 4:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
12:00 AM - 12:00 AM

Minor Periods

4:31 PM - 6:01 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Friday, May 9, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 52.2°F
Average Humidity: 59%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 2.3

Air Quality

AQI: 1 - Good
PM2.5: 8.96 μg/m3
PM10: 17.09 μg/m3
Carbon Monoxide: 255.08 μg/m3
Nitrogen Dioxide: 4.4 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 112.32 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:21 PM
Sunset: 8:41 PM
Daylight: 14 hrs 38 mins
Moonrise: 6:05 PM
Moon Transit: 11:33 PM
Moonset: 4:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Minor Periods

5:35 PM - 7:05 PM
4:05 AM - 5:35 AM

Action Rating: 3 out of 5

Saturday, May 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58.4°F
Average Humidity: 48%
Chance of Rain: 0%
Wind: 16.6 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 7.16 μg/m3
PM10: 17.89 μg/m3
Carbon Monoxide: 262.11 μg/m3
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 114.72 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:21 PM
Sunset: 8:42 PM
Daylight: 14 hrs 40 mins
Moonrise: 7:09 PM
Moon Transit: 12:00 AM
Moonset: 4:52 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:28 AM - 10:58 AM

Minor Periods

6:39 PM - 8:09 PM
4:22 AM - 5:52 AM

Action Rating: 3 out of 5

Sunday, May 11, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 48.8°F
Average Humidity: 74%
Chance of Rain: 88%
Wind: 16.1 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 10.43 μg/m3
PM10: 29.03 μg/m3
Carbon Monoxide: 259.15 μg/m3
Nitrogen Dioxide: 1.81 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 129.36 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:21 PM
Sunset: 8:44 PM
Daylight: 14 hrs 43 mins
Moonrise: 8:16 PM
Moon Transit: 12:14 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:10 AM - 11:40 AM

Minor Periods

7:46 PM - 9:16 PM
4:41 AM - 6:11 AM

Action Rating: 4 out of 5

Monday, May 12, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 40.3°F
Average Humidity: 81%
Chance of Rain: 89%
Wind: 18.8 mph
UV Index: 1

Air Quality

AQI: 2 - Moderate
PM2.5: 16.01 μg/m3
PM10: 63.53 μg/m3
Carbon Monoxide: 260.71 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 133.77 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:21 PM
Sunset: 8:45 PM
Daylight: 14 hrs 45 mins
Moonrise: 9:22 PM
Moon Transit: 12:58 AM
Moonset: 5:33 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:28 AM - 2:58 AM
9:55 AM - 12:25 AM

Minor Periods

8:52 PM - 10:22 PM
5:03 AM - 6:33 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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