Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

61.5°F

Measurement Time: Sunday, September 14, 2025, 4:45 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

50.5°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 62%
Feels Like: 51°F
Wind: ESE 2.2 mph
Wind Gusts: 3.3 mph
Pressure: 30.05 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sun
H: 66°F
L: 39°F
Patchy rain nearby
Mon
H: 54°F
L: 42°F
Patchy rain nearby
Tue
H: 51°F
L: 43°F
Mist
Wed
H: 61°F
L: 38°F
Sunny
Thu
H: 72°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 7.22 μg/m3
PM10: 9.99 μg/m3
Carbon Monoxide: 255.3 μg/m3
Nitrogen Dioxide: 10.18 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 1:20 PM
Sunset: 7:37 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:52 PM
Moon Transit: 7:20 AM
Moonset: 3:52 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
4:23 PM - 6:53 PM

Minor Periods

12:00 AM - 12:00 AM
3:22 PM - 4:52 PM

Action Rating: 3 out of 5

Special Weather Statement issued September 14 at 6:28PM MDT by NWS Great Falls MT

Effective: Sun September 14, 2025, 6:28 PM
Expires: Sun September 14, 2025, 7:30 PM

At 626 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles southwest of Silver Bow to near Twin Bridges to 6 miles northwest of Alder. Movement was northeast at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Boulder, Sheridan, Virginia City, Whitehall, Ennis, Twin Bridges, Alder, Pony, Silver Star, Harrison, Basin, Norris, Mcallister, Laurin, Waterloo, Cardwell, Lewis And Clark Caverns State Park, Elk Park, Jeffers, and Willow Creek.

If outdoors, consider seeking shelter inside a building.


Special Weather Statement issued September 14 at 6:28PM MDT by NWS Great Falls MT

Effective: Sun September 14, 2025, 6:28 PM
Expires: Sun September 14, 2025, 7:30 PM

At 626 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles southwest of Silver Bow to near Twin Bridges to 6 miles northwest of Alder. Movement was northeast at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Boulder, Sheridan, Virginia City, Whitehall, Ennis, Twin Bridges, Alder, Pony, Silver Star, Harrison, Basin, Norris, Mcallister, Laurin, Waterloo, Cardwell, Lewis And Clark Caverns State Park, Elk Park, Jeffers, and Willow Creek.

If outdoors, consider seeking shelter inside a building.
Sunday, September 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 53.6°F
Average Humidity: 53%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 8.31 μg/m3
Carbon Monoxide: 237.39 μg/m3
Nitrogen Dioxide: 5.96 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 99.68 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 1:20 PM
Sunset: 7:37 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:52 PM
Moon Transit: 7:20 AM
Moonset: 3:52 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
4:23 PM - 6:53 PM

Minor Periods

12:00 AM - 12:00 AM
3:22 PM - 4:52 PM

Action Rating: 3 out of 5

Monday, September 15, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 48.8°F
Average Humidity: 71%
Chance of Rain: 82%
Wind: 5.8 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 5.37 μg/m3
PM10: 7.44 μg/m3
Carbon Monoxide: 240.35 μg/m3
Nitrogen Dioxide: 4.98 μg/m3
Sulphur Dioxide: 0.26 μg/m3
Ozone: 96.52 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 1:20 PM
Sunset: 7:35 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:52 AM
Moon Transit: 8:22 AM
Moonset: 4:47 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

7:52 AM - 10:22 AM
5:24 PM - 7:54 PM

Minor Periods

4:17 PM - 5:47 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, September 16, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 46.7°F
Average Humidity: 81%
Chance of Rain: 86%
Wind: 6.9 mph
UV Index: 1.3

Air Quality

AQI: 1 - Good
PM2.5: 1.44 μg/m3
PM10: 1.45 μg/m3
Carbon Monoxide: 246.05 μg/m3
Nitrogen Dioxide: 4.45 μg/m3
Sulphur Dioxide: 0.09 μg/m3
Ozone: 77.8 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:20 PM
Sunset: 7:33 PM
Daylight: 12 hrs 28 mins
Moonrise: 1:02 AM
Moon Transit: 9:20 AM
Moonset: 5:28 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

8:50 AM - 11:20 AM
6:21 PM - 8:51 PM

Minor Periods

4:58 PM - 6:28 PM
12:32 AM - 2:02 AM

Action Rating: 2 out of 5

Wednesday, September 17, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 49°F
Average Humidity: 80%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 4.57 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 259.67 μg/m3
Nitrogen Dioxide: 6.5 μg/m3
Sulphur Dioxide: 0.06 μg/m3
Ozone: 84.08 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 1:19 PM
Sunset: 7:31 PM
Daylight: 12 hrs 24 mins
Moonrise: 2:17 AM
Moon Transit: 10:15 AM
Moonset: 5:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

7:14 PM - 9:44 PM
9:45 AM - 12:15 AM

Minor Periods

5:29 PM - 6:59 PM
1:47 AM - 3:17 AM

Action Rating: 3 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54.1°F
Average Humidity: 40%
Chance of Rain: 0%
Wind: 8.3 mph
UV Index: 1.6

Air Quality

AQI: 1 - Good
PM2.5: 3.33 μg/m3
PM10: 3.83 μg/m3
Carbon Monoxide: 297.99 μg/m3
Nitrogen Dioxide: 14.33 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 80.46 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:19 PM
Sunset: 7:29 PM
Daylight: 12 hrs 21 mins
Moonrise: 3:31 AM
Moon Transit: 11:05 AM
Moonset: 6:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

8:02 PM - 10:32 PM
10:35 AM - 1:05 PM

Minor Periods

5:54 PM - 7:24 PM
3:01 AM - 4:31 AM

Action Rating: 3 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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