Water Temperature of the Jefferson River in Three Forks, MT

Current Water Temperature

45.1°F

Measurement Time: Monday, March 30, 2026, 9:00 PM MDT

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

32.1°F
Clear
Clear
28.8°F
32.1°F
60%
ENE 2.9 mph
6.1 mph
28.8°F
20.6°F
0 in
0%
6 mi
1022 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 48°F
L: 31°F
Partly Cloudy
Wed
H: 56°F
L: 32°F
Overcast
Thu
H: 44°F
L: 34°F
Patchy rain nearby
Fri
H: 46°F
L: 31°F
Sunny
Sat
H: 57°F
L: 28°F

Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 2.65 μg/m3
Carbon Monoxide: 165.85 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:30 PM
Sunset: 7:54 PM
Daylight: 12 hrs 46 mins
Moonrise: 6:48 PM
Moon Transit: 12:09 AM
Moonset: 6:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:03 AM - 11:33 AM

Minor Periods

6:18 PM - 7:48 PM
5:58 AM - 7:28 AM

Action Rating: 4 out of 5

Winter Storm Watch issued March 30 at 10:33PM MDT until April 3 at 6:00AM MDT by NWS Great Falls MT

Effective: Mon March 30, 2026, 10:33 PM
Expires: Tue March 31, 2026, 5:15 PM

* WHAT...Heavy, wet snow possible. Total snow accumulations between 7 and 14 inches possible at and above pass level with 3 to 7 inches at lower elevations. Winds could gust as high as 40 mph. * WHERE...Elkhorn and Boulder Mountains, Upper Blackfoot and MacDonald Pass, Southern Rocky Mountain Front, and Northwest Beaverhead County. * WHEN...From Thursday morning through late Thursday night. * IMPACTS...Slushy snow covered roads and significantly reduced visibility at times may make travel very difficult. Tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. * ADDITIONAL DETAILS...The combination of heavy, wet snow and winds may cause power outages and tree damage.

Monitor the latest forecasts for updates on this situation. 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 Storm Watch issued March 30 at 10:33PM MDT until April 3 at 12:00PM MDT by NWS Great Falls MT

Effective: Mon March 30, 2026, 10:33 PM
Expires: Tue March 31, 2026, 5:15 PM

* WHAT...Heavy, wet snow possible. Total snow accumulations between 4 and 8 inches possible at elevations below 5,000 feet and 8 to 16 inches possible above 5,000 feet. Winds could gust as high as 40 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From Thursday afternoon through Friday morning. * IMPACTS...Slushy snow covered roads and significantly reduced visibility at times may make travel very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. Those in the backcountry should ensure they are prepared for dangerous conditions. * ADDITIONAL DETAILS...The combination of heavy, wet snow and winds may cause power outages and tree damage.

Monitor the latest forecasts for updates on this situation. 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.


Tuesday, March 31, 2026

Weather Forecast

Patchy rain nearby
47.7°F
30.7°F
36.7°F
69%
0.02 in
79%
13%
4.7 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 2.27 μg/m3
PM10: 2.63 μg/m3
Carbon Monoxide: 160.17 μg/m3
Nitrogen Dioxide: 3.28 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 81.76 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:30 PM
Sunset: 7:54 PM
Daylight: 12 hrs 46 mins
Moonrise: 6:48 PM
Moon Transit: 12:09 AM
Moonset: 6:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:03 AM - 11:33 AM

Minor Periods

6:18 PM - 7:48 PM
5:58 AM - 7:28 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Partly Cloudy
55.6°F
31.5°F
42°F
73%
0 in
0%
0%
8.9 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.82 μg/m3
PM10: 3.05 μg/m3
Carbon Monoxide: 170.33 μg/m3
Nitrogen Dioxide: 4.04 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 76 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:30 PM
Sunset: 7:55 PM
Daylight: 12 hrs 49 mins
Moonrise: 7:57 PM
Moon Transit: 12:52 AM
Moonset: 6:44 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
9:45 AM - 12:15 AM

Minor Periods

7:27 PM - 8:57 PM
6:14 AM - 7:44 AM

Action Rating: 4 out of 5

Thursday, April 2, 2026

Weather Forecast

Overcast
44.2°F
33.7°F
40.1°F
70%
0 in
0%
0%
20.1 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 2.01 μg/m3
PM10: 2.24 μg/m3
Carbon Monoxide: 139.57 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 74.08 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:29 PM
Sunset: 7:56 PM
Daylight: 12 hrs 52 mins
Moonrise: 9:06 PM
Moon Transit: 1:34 AM
Moonset: 7:01 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

1:04 AM - 3:34 AM
10:28 AM - 12:58 AM

Minor Periods

8:36 PM - 10:06 PM
6:31 AM - 8:01 AM

Action Rating: 3 out of 5

Friday, April 3, 2026

Weather Forecast

Patchy rain nearby
46°F
31.3°F
37.4°F
74%
0.02 in
88%
18%
5.6 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 2.29 μg/m3
PM10: 3.03 μg/m3
Carbon Monoxide: 164.14 μg/m3
Nitrogen Dioxide: 1.99 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 93.64 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 1:29 PM
Sunset: 7:58 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:15 PM
Moon Transit: 2:17 AM
Moonset: 7:19 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:47 AM - 4:17 AM
11:11 AM - 1:41 PM

Minor Periods

9:45 PM - 11:15 PM
6:49 AM - 8:19 AM

Action Rating: 4 out of 5

Saturday, April 4, 2026

Weather Forecast

Sunny
57.3°F
28.4°F
38.6°F
67%
0 in
0%
0%
13.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.74 μg/m3
PM10: 2.85 μg/m3
Carbon Monoxide: 182.37 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 75.92 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:29 PM
Sunset: 7:59 PM
Daylight: 12 hrs 59 mins
Moonrise: 11:24 PM
Moon Transit: 3:02 AM
Moonset: 7:41 AM
Moon Phase: Full
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
11:57 AM - 2:27 PM

Minor Periods

12:00 AM - 12:00 AM
7:11 AM - 8:41 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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