Water Temperature of the Jefferson River in Three Forks, MT

Current Water Temperature

45.9°F

Measurement Time: Thursday, March 19, 2026, 12:00 AM 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

48.6°F
Clear
Clear
47°F
48.6°F
22%
SSW 3.8 mph
8 mph
47°F
11.1°F
0 in
0%
6 mi
1021 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 78°F
L: 45°F
Sunny
Fri
H: 77°F
L: 36°F
Partly Cloudy
Sat
H: 59°F
L: 37°F
Sunny
Sun
H: 56°F
L: 31°F
Overcast
Mon
H: 54°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 2.75 μg/m3
Carbon Monoxide: 138.85 μg/m3
Nitrogen Dioxide: 2.15 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 12:00 AM
Sunset: 7:38 PM
Daylight: 12 hrs 7 mins
Moonrise: 7:37 AM
Moon Transit: 2:07 PM
Moonset: 8:53 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:37 PM - 4:07 PM

Minor Periods

8:23 PM - 9:53 PM
7:07 AM - 8:37 AM

Action Rating: 4 out of 5

High Wind Watch issued March 19 at 12:43AM MDT until March 21 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 12:43 AM
Expires: Thu March 19, 2026, 5:15 PM

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Cascade County, including the Little Belt and Highwood Mountains, Western and Central Chouteau County, Judith Basin County and Judith Gap, Fergus County below 4500ft, and Big Belt, Bridger and Castle Mountains. * WHEN...From Friday morning through Saturday morning. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles.

Monitor the latest forecasts and warnings for updates.
Thursday, March 19, 2026

Weather Forecast

Sunny
78.1°F
45.3°F
59.4°F
22%
0 in
0%
0%
23.7 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 3.58 μg/m3
PM10: 3.86 μg/m3
Carbon Monoxide: 146.89 μg/m3
Nitrogen Dioxide: 3.17 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 90.72 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 12:00 AM
Sunset: 7:38 PM
Daylight: 12 hrs 7 mins
Moonrise: 7:37 AM
Moon Transit: 2:07 PM
Moonset: 8:53 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:37 PM - 4:07 PM

Minor Periods

8:23 PM - 9:53 PM
7:07 AM - 8:37 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Sunny
76.8°F
36.1°F
54.8°F
42%
0 in
0%
0%
21.5 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.32 μg/m3
Carbon Monoxide: 121.09 μg/m3
Nitrogen Dioxide: 3.26 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 76.64 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 8:27 AM
Sunset: 7:39 PM
Daylight: 12 hrs 10 mins
Moonrise: 7:57 AM
Moon Transit: 2:56 PM
Moonset: 10:14 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:26 PM - 4:56 PM

Minor Periods

9:44 PM - 11:14 PM
7:27 AM - 8:57 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Partly Cloudy
58.5°F
37.4°F
47°F
53%
0 in
0%
0%
23.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 3.57 μg/m3
PM10: 3.75 μg/m3
Carbon Monoxide: 121.57 μg/m3
Nitrogen Dioxide: 2.99 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 65.52 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:00 AM
Sunset: 7:40 PM
Daylight: 12 hrs 13 mins
Moonrise: 8:20 AM
Moon Transit: 3:49 PM
Moonset: 11:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:19 PM - 5:49 PM

Minor Periods

12:00 AM - 12:00 AM
7:50 AM - 9:20 AM

Action Rating: 3 out of 5

Sunday, March 22, 2026

Weather Forecast

Sunny
55.8°F
30.8°F
42.3°F
37%
0 in
0%
0%
15.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 2.37 μg/m3
PM10: 2.99 μg/m3
Carbon Monoxide: 145.28 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 77.52 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:00 AM
Sunset: 7:42 PM
Daylight: 12 hrs 17 mins
Moonrise: 8:49 AM
Moon Transit: 4:46 PM
Moonset: 12:37 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
4:16 PM - 6:46 PM

Minor Periods

8:19 AM - 9:49 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, March 23, 2026

Weather Forecast

Overcast
53.7°F
34.7°F
42.6°F
32%
0 in
0%
0%
4.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.46 μg/m3
PM10: 3.14 μg/m3
Carbon Monoxide: 157.81 μg/m3
Nitrogen Dioxide: 6.6 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 67.31 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:00 AM
Sunset: 7:43 PM
Daylight: 12 hrs 20 mins
Moonrise: 9:26 AM
Moon Transit: 5:47 PM
Moonset: 1:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
5:17 PM - 7:47 PM

Minor Periods

8:56 AM - 10:26 AM
12:31 AM - 2:01 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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