Water Temperature of the Madison River in Grayling, MT

Current Water Temperature

35.4°F

Measurement Time: Thursday, February 12, 2026, 12:45 AM MST

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

15.3°F
Mist
Mist
15°F
15.3°F
96%
SSW 2.5 mph
5 mph
15°F
14.1°F
0 in
97%
1 mi
1028 mbar
0.1

Five Day Weather Forecast

Mist
Thu
H: 36°F
L: 15°F
Overcast
Fri
H: 28°F
L: 18°F
Overcast
Sat
H: 28°F
L: 16°F
Overcast
Sun
H: 35°F
L: 18°F
Moderate or heavy snow showers
Mon
H: 35°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 2.15 μg/m3
PM10: 2.95 μg/m3
Carbon Monoxide: 131.85 μg/m3
Nitrogen Dioxide: 0.95 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:39 AM
Sunset: 5:49 PM
Daylight: 10 hrs 20 mins
Moonrise: 4:49 AM
Moon Transit: 8:45 AM
Moonset: 12:43 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
5:44 PM - 8:14 PM

Minor Periods

12:13 AM - 1:43 PM
4:19 AM - 5:49 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued February 12 at 1:23AM MST until February 12 at 12:00PM MST by NWS Pocatello ID

Effective: Thu February 12, 2026, 1:23 AM
Expires: Thu February 12, 2026, 12:00 PM

* WHAT...Widespread visibility one quarter mile or less in dense fog. * WHERE...Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until noon MST today. * IMPACTS...Low visibility will make driving conditions hazardous. Visibility can decrease suddenly and without warning. You must slow down if on the highway to a safe speed in case of a slow down ahead of you.

If driving, slow down, use your low beam and fog headlights if available, and leave plenty of distance ahead of you.
Thursday, February 12, 2026

Weather Forecast

Mist
36.3°F
14.7°F
24.2°F
86%
0 in
0%
0%
4.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.18 μg/m3
PM10: 2.35 μg/m3
Carbon Monoxide: 138.97 μg/m3
Nitrogen Dioxide: 3.04 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 95.04 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:39 AM
Sunset: 5:49 PM
Daylight: 10 hrs 20 mins
Moonrise: 4:49 AM
Moon Transit: 8:45 AM
Moonset: 12:43 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
5:44 PM - 8:14 PM

Minor Periods

12:13 AM - 1:43 PM
4:19 AM - 5:49 AM

Action Rating: 3 out of 5

Friday, February 13, 2026

Weather Forecast

Overcast
28°F
17.8°F
22.4°F
92%
0 in
0%
0%
5.8 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.3 μg/m3
PM10: 2.51 μg/m3
Carbon Monoxide: 138.61 μg/m3
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 97.04 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:39 AM
Sunset: 5:51 PM
Daylight: 10 hrs 22 mins
Moonrise: 5:37 AM
Moon Transit: 9:38 AM
Moonset: 1:42 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.8%

Best Times for Fishing or Hunting

Major Periods

6:37 PM - 9:07 PM
9:08 AM - 11:38 AM

Minor Periods

1:12 PM - 2:42 PM
5:07 AM - 6:37 AM

Action Rating: 2 out of 5

Saturday, February 14, 2026

Weather Forecast

Overcast
27.5°F
16.2°F
21.1°F
96%
0 in
0%
0%
7.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.19 μg/m3
PM10: 2.33 μg/m3
Carbon Monoxide: 143.77 μg/m3
Nitrogen Dioxide: 2.01 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 91.2 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:39 AM
Sunset: 5:52 PM
Daylight: 10 hrs 25 mins
Moonrise: 6:16 AM
Moon Transit: 10:29 AM
Moonset: 2:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

7:28 PM - 9:58 PM
9:59 AM - 12:29 AM

Minor Periods

2:20 PM - 3:50 PM
5:46 AM - 7:16 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Overcast
35.3°F
18.1°F
24.3°F
88%
0 in
0%
0%
6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.43 μg/m3
PM10: 6.41 μg/m3
Carbon Monoxide: 147.91 μg/m3
Nitrogen Dioxide: 2.31 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 102.6 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:39 AM
Sunset: 5:54 PM
Daylight: 10 hrs 28 mins
Moonrise: 6:48 AM
Moon Transit: 11:20 AM
Moonset: 4:01 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:18 PM - 10:48 PM
10:50 AM - 1:20 PM

Minor Periods

3:31 PM - 5:01 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Moderate or heavy snow showers
35.2°F
15.4°F
25°F
87%
0.07 in
84%
18%
7.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.47 μg/m3
PM10: 7.48 μg/m3
Carbon Monoxide: 162.33 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 104 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:39 AM
Sunset: 5:55 PM
Daylight: 10 hrs 31 mins
Moonrise: 7:14 AM
Moon Transit: 12:08 AM
Moonset: 5:13 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:05 PM - 11:35 PM
11:38 AM - 2:08 PM

Minor Periods

4:43 PM - 6:13 PM
6:44 AM - 8:14 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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