Water Temperature of the Sun River in Simms, MT

Current Water Temperature

36.5°F

Measurement Time: Tuesday, March 10, 2026, 6:30 AM MDT

Temperature Locations

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Sun River

Station Name: Sun River at Simms MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,550 feet

Nearest Address:
99 Simms Fairfield Rd
Simms, MT 59477
Cascade County

GPS Coordinates: 47.50162778, -111.9319139

Nearby Water Temperatures

Missouri River, Wolf Creek, MT (35.2 mi)
Birch Creek, Valier, MT (64 mi)
Camas Creek, White Sulphur Springs, MT (66.7 mi)
Marias River, Loma, MT (69.9 mi)
Missouri River, Toston, MT (96.7 mi)
Warm Springs Creek, Warm Springs, MT (99.8 mi)
Clark Fork, East Missoula, MT (103.4 mi)
Jefferson River, Three Forks, MT (112 mi)
South Fork Flathead River, Columbia Falls, MT (114 mi)
Jefferson River, Waterloo, MT (121.8 mi)
Jefferson River, Twin Bridges, MT (131.8 mi)
Ruby River, Twin Bridges, MT (139.1 mi)
Madison River, Norris, MT (139.7 mi)
Big Hole River, Glen, MT (145.5 mi)
Big Hole River, Wisdom, MT (148.9 mi)

Weather for Simms, Montana

Current Weather

35.1°F
Partly Cloudy
Partly Cloudy
25.2°F
32.6°F
40%
W 15.7 mph
18.5 mph
21.8°F
14.1°F
0 in
0%
9 mi
1012 mbar
2

Five Day Weather Forecast

Sunny
Tue
H: 36°F
L: 19°F
Cloudy
Wed
H: 41°F
L: 21°F
Overcast
Thu
H: 42°F
L: 34°F
Moderate rain
Fri
H: 48°F
L: 26°F
Heavy snow
Sat
H: 28°F
L: 11°F

Air Quality

AQI: 1 - Good
PM2.5: 3.65 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 155.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 104 μg/m3

Astronomical

Sunrise: 7:50 AM
Sun Transit: 1:37 PM
Sunset: 7:26 PM
Daylight: 11 hrs 36 mins
Moonrise: 2:55 AM
Moon Transit: 6:47 AM
Moonset: 10:36 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

6:17 AM - 8:47 AM
3:40 PM - 6:10 PM

Minor Periods

10:06 AM - 11:36 AM
2:25 AM - 3:55 AM

Action Rating: 2 out of 5

Winter Storm Watch issued March 10 at 2:10AM MDT until March 13 at 6:00PM MDT by NWS Great Falls MT

Effective: Tue March 10, 2026, 2:10 AM
Expires: Tue March 10, 2026, 5:15 PM

* WHAT...Blizzard conditions possible. Total snow accumulations between 1 and 3 feet possible. Winds could gust as high as 75 to 95 mph on Thursday. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...From Wednesday evening through Friday afternoon. * IMPACTS...Whiteout conditions are possible and may make travel treacherous and potentially life-threatening. * ADDITIONAL DETAILS...Additional heavy snow is possible from Friday evening through Saturday, with upwards of 1 to 2 additional feet being possible.

Prepare for possible blizzard conditions. Continue to 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.


High Wind Watch issued March 10 at 2:05AM MDT until March 12 at 6:00PM MDT by NWS Great Falls MT

Effective: Tue March 10, 2026, 2:05 AM
Expires: Tue March 10, 2026, 5:15 PM

* WHAT...Southwest winds 35 to 55 mph, with gusts up to 70 mph possible. Higher winds gusts up to 95 mph possible along the Rocky Mountain Front * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult, especially for high profile vehicles. Blowing dust could significantly reduce visibility at times.

Monitor the latest forecasts and warnings for updates. Remember, a High Wind Watch means that there is at least a 50% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the watch period.
Tuesday, March 10, 2026

Weather Forecast

Sunny
36.1°F
18.7°F
26.3°F
51%
0 in
0%
0%
21 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 3.07 μg/m3
PM10: 4.17 μg/m3
Carbon Monoxide: 151.73 μg/m3
Nitrogen Dioxide: 1.6 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 96.72 μg/m3

Astronomical

Sunrise: 7:50 AM
Sun Transit: 1:37 PM
Sunset: 7:26 PM
Daylight: 11 hrs 36 mins
Moonrise: 2:55 AM
Moon Transit: 6:47 AM
Moonset: 10:36 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

6:17 AM - 8:47 AM
3:40 PM - 6:10 PM

Minor Periods

10:06 AM - 11:36 AM
2:25 AM - 3:55 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Cloudy
41.4°F
20.5°F
31.2°F
58%
0 in
0%
0%
30.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 3.35 μg/m3
PM10: 4.79 μg/m3
Carbon Monoxide: 154.29 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 99 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 1:37 PM
Sunset: 7:28 PM
Daylight: 11 hrs 39 mins
Moonrise: 3:55 AM
Moon Transit: 7:38 AM
Moonset: 11:20 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
4:32 PM - 7:02 PM

Minor Periods

10:50 AM - 12:20 AM
3:25 AM - 4:55 AM

Action Rating: 3 out of 5

Thursday, March 12, 2026

Weather Forecast

Overcast
42.4°F
33.6°F
39.2°F
64%
0 in
0%
0%
38.9 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 1.1 μg/m3
PM10: 1.26 μg/m3
Carbon Monoxide: 138.45 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 83.24 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 1:37 PM
Sunset: 7:29 PM
Daylight: 11 hrs 43 mins
Moonrise: 4:47 AM
Moon Transit: 8:30 AM
Moonset: 12:16 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

8:00 AM - 10:30 AM
5:24 PM - 7:54 PM

Minor Periods

11:46 AM - 1:16 PM
4:17 AM - 5:47 AM

Action Rating: 4 out of 5

Friday, March 13, 2026

Weather Forecast

Moderate rain
47.8°F
25.9°F
37.7°F
82%
0.46 in
83%
26%
24.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2 μg/m3
PM10: 2.6 μg/m3
Carbon Monoxide: 140.23 μg/m3
Nitrogen Dioxide: 2.06 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 98.44 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 1:37 PM
Sunset: 7:30 PM
Daylight: 11 hrs 46 mins
Moonrise: 5:28 AM
Moon Transit: 9:22 AM
Moonset: 1:21 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:52 AM - 11:22 AM
6:15 PM - 8:45 PM

Minor Periods

12:51 AM - 2:21 PM
4:58 AM - 6:28 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Heavy snow
28°F
10.7°F
22.1°F
88%
0.36 in
60%
53%
18.8 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 4.2 μg/m3
PM10: 5.64 μg/m3
Carbon Monoxide: 155.8 μg/m3
Nitrogen Dioxide: 2.03 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 121.23 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 12:00 AM
Sunset: 7:32 PM
Daylight: 11 hrs 50 mins
Moonrise: 6:01 AM
Moon Transit: 10:12 AM
Moonset: 2:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

7:05 PM - 9:35 PM
9:42 AM - 12:12 AM

Minor Periods

2:02 PM - 3:32 PM
5:31 AM - 7:01 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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