Water Temperature of the Jefferson River in Three Forks, MT

Current Water Temperature

39.6°F

Measurement Time: Tuesday, February 17, 2026, 11:00 AM MST

Temperature Locations

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Jefferson River

Station Name: Jefferson River near Three Forks MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 4,081 feet

Nearest Address:
87571 Frontage Rd
Three Forks, MT 59752
Gallatin County

GPS Coordinates: 45.8971361, -111.5956722

Nearby Water Temperatures

Missouri River, Toston, MT (19.2 mi)
Madison River, Norris, MT (28.2 mi)
Jefferson River, Waterloo, MT (30.3 mi)
Jefferson River, Twin Bridges, MT (40.4 mi)
Ruby River, Twin Bridges, MT (44.6 mi)
Madison River, Ennis, MT (46.5 mi)
Big Hole River, Glen, MT (56.1 mi)
Camas Creek, White Sulphur Springs, MT (57.3 mi)
Warm Springs Creek, Warm Springs, MT (60.3 mi)
Yellowstone River, Corwin Springs, MT (66.7 mi)
Madison River, Cameron, MT (69.7 mi)
Madison River, Grayling, MT (72.3 mi)
Boiling River Hot Springs, Yellowstone National Park, WY (76.8 mi)
Missouri River, Wolf Creek, MT (78.4 mi)
Lamar River, Yellowstone National Park, WY (88.8 mi)

Weather for Three Forks, Montana

Current Weather

33.1°F
Clear
Clear
27.6°F
36.4°F
41%
W 5.8 mph
11.9 mph
30.3°F
3.7°F
0 in
0%
9 mi
998 mbar
0

Five Day Weather Forecast

Partly Cloudy
Tue
H: 44°F
L: 26°F
Moderate or heavy snow showers
Wed
H: 24°F
L: 8°F
Cloudy
Thu
H: 29°F
L: 1°F
Mist
Fri
H: 32°F
L: -0°F
Cloudy
Sat
H: 35°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 3.95 μg/m3
PM10: 4.95 μg/m3
Carbon Monoxide: 174.85 μg/m3
Nitrogen Dioxide: 5.85 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:40 AM
Sunset: 5:56 PM
Daylight: 10 hrs 31 mins
Moonrise: 7:38 AM
Moon Transit: 12:56 AM
Moonset: 6:26 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:26 AM - 2:56 PM

Minor Periods

5:56 PM - 7:26 PM
7:08 AM - 8:38 AM

Action Rating: 5 out of 5

Winter Weather Advisory issued February 16 at 11:54PM MST until February 17 at 5:00PM MST by NWS Great Falls MT

Effective: Mon February 16, 2026, 11:54 PM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. Winds gusting as high as 50 mph. * WHERE...The Continental Divide along the Rocky Mountain Front, Upper Blackfoot and MacDonald Pass, Elkhorn and Boulder Mountains, and Northwest Beaverhead County. * WHEN...Until 5 PM MST Tuesday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Gusty winds will create areas of reduced visibility in blowing and drifting snow.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock. Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.


Winter Weather Advisory issued February 17 at 11:22AM MST until February 17 at 5:00PM MST by NWS Great Falls MT

Effective: Tue February 17, 2026, 11:22 AM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow and blowing snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...The Continental Divide along the Rocky Mountain Front, Upper Blackfoot and MacDonald Pass, and Elkhorn and Boulder Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.


Winter Weather Advisory issued February 16 at 11:54PM MST until February 17 at 5:00PM MST by NWS Great Falls MT

Effective: Mon February 16, 2026, 11:54 PM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 6 inches with up to 10 inches above 7000 feet near the Continental Divide. Winds gusting as high as 50 mph over ridgetops and through north to south oriented valleys. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...Until 5 PM MST Tuesday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Gusty winds will create areas of reduced visibility in blowing and drifting snow.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock. Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.


Winter Weather Advisory issued February 17 at 3:11AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Tue February 17, 2026, 3:11 AM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches across much of the area, with higher amounts 8 to 12 inches over Pitchstone Plateau of southwest Yellowstone. Accumulations up to 2 inches around Mammoth. Winds gusting as high as 45 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be difficult.

Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info .


Winter Weather Advisory issued February 17 at 12:16PM MST until February 18 at 11:00PM MST by NWS Riverton WY

Effective: Tue February 17, 2026, 12:16 PM
Expires: Wed February 18, 2026, 7:15 AM

* WHAT...Snow expected. Total snow accumulations between 5 and 8 inches for much of the area, with higher accumulations 7 to 12 inches for the Pitchstone Plateau of southwest Yellowstone. * WHERE...Yellowstone National Park. * WHEN...From 11 PM this evening to 11 PM MST Wednesday. * IMPACTS...Backcountry travel will be difficult. * ADDITIONAL DETAILS...Total accumulations around 2 inches near Mammoth.

Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info.


Tuesday, February 17, 2026

Weather Forecast

Partly Cloudy
44.4°F
25.7°F
33.9°F
54%
0 in
0%
0%
25.3 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.93 μg/m3
PM10: 6.21 μg/m3
Carbon Monoxide: 161.77 μg/m3
Nitrogen Dioxide: 4.21 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 102.32 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:40 AM
Sunset: 5:56 PM
Daylight: 10 hrs 31 mins
Moonrise: 7:38 AM
Moon Transit: 12:56 AM
Moonset: 6:26 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:26 AM - 2:56 PM

Minor Periods

5:56 PM - 7:26 PM
7:08 AM - 8:38 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Moderate or heavy snow showers
23.9°F
7.5°F
16.3°F
77%
0.55 in
86%
23%
13.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.37 μg/m3
PM10: 4.19 μg/m3
Carbon Monoxide: 173.57 μg/m3
Nitrogen Dioxide: 4.68 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 73.4 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:40 AM
Sunset: 5:57 PM
Daylight: 10 hrs 34 mins
Moonrise: 7:57 AM
Moon Transit: 1:42 PM
Moonset: 7:40 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:12 PM - 3:42 PM

Minor Periods

7:10 PM - 8:40 PM
7:27 AM - 8:57 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Cloudy
28.6°F
1.4°F
12.4°F
78%
0 in
0%
0%
8.1 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 3.17 μg/m3
PM10: 3.61 μg/m3
Carbon Monoxide: 175.33 μg/m3
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 64.08 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:40 AM
Sunset: 5:59 PM
Daylight: 10 hrs 37 mins
Moonrise: 8:15 AM
Moon Transit: 2:07 PM
Moonset: 8:56 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

1:37 PM - 4:07 PM
1:37 PM - 4:07 PM

Minor Periods

8:26 PM - 9:56 PM
7:45 AM - 9:15 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Mist
31.8°F
-0°F
14.1°F
77%
0 in
0%
0%
13.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.36 μg/m3
PM10: 5.34 μg/m3
Carbon Monoxide: 172.27 μg/m3
Nitrogen Dioxide: 6.33 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 86.72 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:40 AM
Sunset: 6:00 PM
Daylight: 10 hrs 40 mins
Moonrise: 8:33 AM
Moon Transit: 3:14 PM
Moonset: 10:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:44 PM - 5:14 PM

Minor Periods

9:43 PM - 11:13 PM
8:03 AM - 9:33 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Cloudy
35.4°F
15.3°F
23.7°F
58%
0 in
0%
0%
6.7 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 3.82 μg/m3
PM10: 4.37 μg/m3
Carbon Monoxide: 202.63 μg/m3
Nitrogen Dioxide: 8.28 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 86.69 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:39 AM
Sunset: 6:02 PM
Daylight: 10 hrs 43 mins
Moonrise: 8:53 AM
Moon Transit: 4:03 PM
Moonset: 11:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
3:33 PM - 6:03 PM

Minor Periods

12:00 AM - 12:00 AM
8:23 AM - 9:53 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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