Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

59.0°F

Measurement Time: Friday, July 24, 2026, 4:45 PM MDT

Temperature Locations

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Local Points of Interest

Hebgen Lake; West Yellowstone, MT

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

61.3°F
Partly cloudy
Partly cloudy
61.3°F
56°F
88%
SE 4.3 mph
8.9 mph
55.6°F
40.6°F
0 in
75%
9 mi
1026 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 85°F
L: 50°F
Sunny
Sat
H: 86°F
L: 50°F
Sunny
Sun
H: 85°F
L: 49°F
Partly Cloudy
Mon
H: 81°F
L: 57°F
Sunny
Tue
H: 86°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 6.9 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 6.1 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:31 PM
Sunset: 9:01 PM
Daylight: 14 hrs 58 mins
Moonrise: 5:54 PM
Moon Transit: 9:58 PM
Moonset: 1:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
9:28 PM - 11:58 PM

Minor Periods

5:24 PM - 6:54 PM
12:50 AM - 2:20 AM

Action Rating: 4 out of 5

Red Flag Warning issued July 24 at 12:15PM MDT until July 25 at 9:00PM MDT by NWS Missoula MT

Effective: Fri July 24, 2026, 12:15 PM
Expires: Sat July 25, 2026, 9:00 PM

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT SATURDAY DUE TO LIGHTNING AND WIND, LOW RELATIVE HUMIDITY FOR EAST BEAVERHEAD... The National Weather Service in Missoula MT has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zone 111. * TIMING...From 1 PM to 9 PM MDT Saturday. * WINDS...Southwest winds 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 15 to 25 percent. * THUNDERSTORMS...Isolated to scattered thunderstorms producing minimal precipitation. Erratic outflow winds of 55 to 65 mph possible. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

Please advise the appropriate officials or fire crews in the field of this Red Flag Warning.


Severe Thunderstorm Warning issued July 24 at 6:11PM MDT until July 24 at 7:00PM MDT by NWS Great Falls MT

Effective: Fri July 24, 2026, 6:11 PM
Expires: Fri July 24, 2026, 7:00 PM

SVRTFX The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Southeastern Madison County in southwestern Montana... South central Gallatin County in south central Montana... * Until 700 PM MDT. * At 610 PM MDT, a severe thunderstorm was located 13 miles northwest of Henrys Lake, moving east at 35 mph. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... West Yellowstone, Divide Lake, West Entrance, Yellowstone Village, and Raynolds Pass.

For your protection move to an interior room on the lowest floor of a building.
Friday, July 24, 2026

Weather Forecast

Sunny
84.5°F
49.7°F
66.1°F
53%
0.01 in
17%
0%
12.5 mph
10.8


Air Quality

AQI: 1 - Good
PM2.5: 7.47 μg/m3
PM10: 9.4 μg/m3
Carbon Monoxide: 106.92 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 79.67 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:31 PM
Sunset: 9:01 PM
Daylight: 14 hrs 58 mins
Moonrise: 5:54 PM
Moon Transit: 9:58 PM
Moonset: 1:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
9:28 PM - 11:58 PM

Minor Periods

5:24 PM - 6:54 PM
12:50 AM - 2:20 AM

Action Rating: 4 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
85.6°F
50.1°F
66.7°F
51%
0 in
17%
0%
13.2 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 3.3 μg/m3
PM10: 5.23 μg/m3
Carbon Monoxide: 99.33 μg/m3
Nitrogen Dioxide: 3.03 μg/m3
Sulphur Dioxide: 0.16 μg/m3
Ozone: 86.83 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:31 PM
Sunset: 9:00 PM
Daylight: 14 hrs 56 mins
Moonrise: 6:51 PM
Moon Transit: 10:49 PM
Moonset: 2:00 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

6:57 AM - 9:27 AM
12:00 AM - 12:00 AM

Minor Periods

6:21 PM - 7:51 PM
1:30 AM - 3:00 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
85.1°F
48.9°F
67°F
52%
0 in
4%
0%
13 mph
10.3


Air Quality

AQI: 1 - Good
PM2.5: 3.03 μg/m3
PM10: 5.73 μg/m3
Carbon Monoxide: 97.79 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 90.67 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:31 PM
Sunset: 8:59 PM
Daylight: 14 hrs 54 mins
Moonrise: 7:39 PM
Moon Transit: 11:41 PM
Moonset: 2:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

7:09 PM - 8:39 PM
2:19 AM - 3:49 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Partly Cloudy
81.4°F
57°F
68.3°F
35%
0 in
17%
0%
13.6 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 8.59 μg/m3
Carbon Monoxide: 98.33 μg/m3
Nitrogen Dioxide: 3.83 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 91.54 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:31 PM
Sunset: 8:57 PM
Daylight: 14 hrs 52 mins
Moonrise: 8:19 PM
Moon Transit: 12:00 AM
Moonset: 3:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:39 AM - 11:09 AM

Minor Periods

7:49 PM - 9:19 PM
3:16 AM - 4:46 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
86.1°F
49.7°F
67.6°F
26%
0 in
0%
0%
11.9 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 5.13 μg/m3
PM10: 8.57 μg/m3
Carbon Monoxide: 100.46 μg/m3
Nitrogen Dioxide: 4.24 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 90.88 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:31 PM
Sunset: 8:56 PM
Daylight: 14 hrs 49 mins
Moonrise: 8:50 PM
Moon Transit: 12:31 AM
Moonset: 4:50 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 AM
9:30 AM - 12:00 AM

Minor Periods

8:20 PM - 9:50 PM
4:20 AM - 5:50 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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