Water Temperature of the Sun River in Simms, MT

Current Water Temperature

31.8°F

Measurement Time: Tuesday, February 24, 2026, 12:30 AM MST

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

34°F
Sunny
Sunny
32°F
31.4°F
75%
WSW 2.7 mph
5.2 mph
26.9°F
25°F
0 in
0%
9 mi
1007 mbar
0.1

Five Day Weather Forecast

Sunny
Tue
H: 46°F
L: 29°F
Partly Cloudy
Wed
H: 39°F
L: 29°F
Sunny
Thu
H: 43°F
L: 29°F
Patchy rain nearby
Fri
H: 43°F
L: 19°F
Light snow
Sat
H: 25°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 1.05 μg/m3
PM10: 1.05 μg/m3
Carbon Monoxide: 144.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:40 AM
Sunset: 6:05 PM
Daylight: 10 hrs 49 mins
Moonrise: 10:20 AM
Moon Transit: 6:54 PM
Moonset: 2:23 AM
Moon Phase: First Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
6:24 PM - 8:54 PM

Minor Periods

9:50 AM - 11:20 AM
1:53 AM - 3:23 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued February 23 at 1:21PM MST until February 24 at 11:00AM MST by NWS Great Falls MT

Effective: Mon February 23, 2026, 1:21 PM
Expires: Tue February 24, 2026, 5:00 AM

* WHAT...Snow expected. Accumulations between 2 and 4 inches for Rogers and MacDonald Pass, with higher amounts over the higher terrain along the Rocky Mountain Front. Winds gusting as high as 40 mph. * WHERE...Upper Blackfoot and MacDonald Pass and Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Expect winter driving conditions.

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.


High Wind Watch issued February 23 at 12:54PM MST until February 27 at 9:00AM MST by NWS Great Falls MT

Effective: Mon February 23, 2026, 12:54 PM
Expires: Tue February 24, 2026, 4:00 AM

* WHAT...West winds 45 to 55 mph with gusts up to 90 mph possible. Winds may gust over 100 mph at times along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...The Rocky Mountain Front and adjacent foothills and plains. * WHEN...From late Tuesday night through Friday morning. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be dangerous, especially for high profile or light weight vehicles. * ADDITIONAL DETAILS...Those operating high profile or light weight vehicles should consider delaying travel.

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.


High Wind Watch issued February 23 at 11:28PM MST until February 27 at 9:00AM MST by NWS Great Falls MT

Effective: Mon February 23, 2026, 11:28 PM
Expires: Tue February 24, 2026, 5:00 PM

* WHAT...West winds 45 to 55 mph with gusts up to 90 mph possible. Winds may gust over 100 mph at times along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...The Rocky Mountain Front and adjacent foothills and plains. * WHEN...From late Tuesday night through Friday morning. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be dangerous, especially for high profile or light weight vehicles. * ADDITIONAL DETAILS...Those operating high profile or light weight vehicles should consider delaying travel.

Monitor the latest forecasts and warnings for updates.


Winter Weather Advisory issued February 23 at 11:02PM MST until February 24 at 11:00AM MST by NWS Great Falls MT

Effective: Mon February 23, 2026, 11:02 PM
Expires: Tue February 24, 2026, 11:00 AM

* WHAT...Snow. Additional snow accumulations up to 2 to 4 inches at pass level, with up to 6 inches above pass level. * WHERE...The Continental Divide along the Rocky Mountain Front, and Upper Blackfoot and MacDonald Pass. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Expect winter driving conditions.

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.


Winter Weather Advisory issued February 23 at 1:21PM MST until February 24 at 11:00AM MST by NWS Great Falls MT

Effective: Mon February 23, 2026, 1:21 PM
Expires: Tue February 24, 2026, 5:00 AM

* WHAT...Snow expected. Total snow accumulations up to 4 inches, highest over King's Hill Pass. Winds gusting as high as 30 mph. * WHERE...Little Belt and Highwood Mountains. * WHEN...From midnight tonight to 11 AM MST Tuesday. * IMPACTS...Expect winter driving conditions.

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.
Tuesday, February 24, 2026

Weather Forecast

Sunny
45.7°F
28.6°F
35.5°F
75%
0 in
0%
0%
14.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.51 μg/m3
PM10: 1.67 μg/m3
Carbon Monoxide: 143.33 μg/m3
Nitrogen Dioxide: 2.26 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 83.88 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:40 AM
Sunset: 6:05 PM
Daylight: 10 hrs 49 mins
Moonrise: 10:20 AM
Moon Transit: 6:54 PM
Moonset: 2:23 AM
Moon Phase: First Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
6:24 PM - 8:54 PM

Minor Periods

9:50 AM - 11:20 AM
1:53 AM - 3:23 AM

Action Rating: 3 out of 5

Wednesday, February 25, 2026

Weather Forecast

Partly Cloudy
39.2°F
28.8°F
33.5°F
67%
0 in
0%
0%
28.2 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 1.38 μg/m3
PM10: 1.57 μg/m3
Carbon Monoxide: 146.25 μg/m3
Nitrogen Dioxide: 2.39 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 87.88 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:40 AM
Sunset: 6:07 PM
Daylight: 10 hrs 52 mins
Moonrise: 11:12 AM
Moon Transit: 7:57 PM
Moonset: 3:38 AM
Moon Phase: First Quarter
Moon Illumination: 62.3%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
7:27 PM - 9:57 PM

Minor Periods

10:42 AM - 12:12 AM
3:08 AM - 4:38 AM

Action Rating: 2 out of 5

Thursday, February 26, 2026

Weather Forecast

Sunny
42.8°F
28.8°F
34.1°F
55%
0 in
0%
0%
29.8 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.34 μg/m3
PM10: 2.99 μg/m3
Carbon Monoxide: 149.49 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 1.77 μg/m3
Ozone: 98.96 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:40 AM
Sunset: 6:09 PM
Daylight: 10 hrs 55 mins
Moonrise: 12:19 AM
Moon Transit: 9:00 PM
Moonset: 4:42 AM
Moon Phase: First Quarter
Moon Illumination: 72.9%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
8:30 PM - 11:00 PM

Minor Periods

11:49 AM - 1:19 PM
4:12 AM - 5:42 AM

Action Rating: 3 out of 5

Friday, February 27, 2026

Weather Forecast

Patchy rain nearby
42.7°F
18.8°F
35.4°F
52%
0.04 in
88%
11%
17.7 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 2.78 μg/m3
PM10: 3.99 μg/m3
Carbon Monoxide: 143.62 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 2.03 μg/m3
Ozone: 106.44 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:40 AM
Sunset: 6:10 PM
Daylight: 10 hrs 59 mins
Moonrise: 1:37 PM
Moon Transit: 10:00 PM
Moonset: 5:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
12:00 AM - 12:00 AM

Minor Periods

1:07 PM - 2:37 PM
4:59 AM - 6:29 AM

Action Rating: 2 out of 5

Saturday, February 28, 2026

Weather Forecast

Light snow
24.8°F
15°F
20.5°F
81%
0.02 in
72%
48%
11.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 5.65 μg/m3
Carbon Monoxide: 163.35 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 69.62 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:40 AM
Sunset: 6:12 PM
Daylight: 11 hrs 2 mins
Moonrise: 2:59 PM
Moon Transit: 10:54 PM
Moonset: 6:05 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
12:00 AM - 12:00 AM

Minor Periods

2:29 PM - 3:59 PM
5:35 AM - 7:05 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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