Water Temperature of the Sun River in Simms, MT

Current Water Temperature

36.5°F

Measurement Time: Wednesday, March 4, 2026, 2:30 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

46°F
Sunny
Sunny
42°F
46.9°F
42%
SSW 7.8 mph
10.9 mph
43.2°F
23.8°F
0 in
0%
9 mi
1010 mbar
1.2

Five Day Weather Forecast

Sunny
Wed
H: 60°F
L: 39°F
Moderate rain
Thu
H: 43°F
L: 31°F
Cloudy
Fri
H: 42°F
L: 28°F
Sunny
Sat
H: 51°F
L: 29°F
Moderate rain
Sun
H: 56°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 3.95 μg/m3
PM10: 4.55 μg/m3
Carbon Monoxide: 161.85 μg/m3
Nitrogen Dioxide: 2.55 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:39 AM
Sunset: 6:18 PM
Daylight: 11 hrs 16 mins
Moonrise: 8:06 PM
Moon Transit: 1:15 AM
Moonset: 7:23 AM
Moon Phase: Full
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
10:06 AM - 12:36 AM

Minor Periods

7:36 PM - 9:06 PM
6:53 AM - 8:23 AM

Action Rating: 4 out of 5

Winter Weather Advisory issued March 3 at 11:27PM MST until March 5 at 3:00PM MST by NWS Great Falls MT

Effective: Tue March 3, 2026, 11:27 PM
Expires: Wed March 4, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches near and at pass level with higher amounts above pass level. Winds gusting as high as 35 mph. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...From 8 PM Wednesday to 3 PM MST Thursday. * IMPACTS...Plan on slippery road 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. 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.
Wednesday, March 4, 2026

Weather Forecast

Sunny
59.5°F
38.5°F
48.2°F
44%
0 in
0%
0%
13.2 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 146.25 μg/m3
Nitrogen Dioxide: 4.66 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 67.56 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:39 AM
Sunset: 6:18 PM
Daylight: 11 hrs 16 mins
Moonrise: 8:06 PM
Moon Transit: 1:15 AM
Moonset: 7:23 AM
Moon Phase: Full
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
10:06 AM - 12:36 AM

Minor Periods

7:36 PM - 9:06 PM
6:53 AM - 8:23 AM

Action Rating: 4 out of 5

Thursday, March 5, 2026

Weather Forecast

Moderate rain
42.6°F
30.7°F
38.4°F
73%
0.45 in
80%
0%
9.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.68 μg/m3
PM10: 2.97 μg/m3
Carbon Monoxide: 156.97 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 67.4 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:39 AM
Sunset: 6:19 PM
Daylight: 11 hrs 19 mins
Moonrise: 9:17 PM
Moon Transit: 1:58 AM
Moonset: 7:38 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
10:49 AM - 1:19 PM

Minor Periods

8:47 PM - 10:17 PM
7:08 AM - 8:38 AM

Action Rating: 4 out of 5

Friday, March 6, 2026

Weather Forecast

Cloudy
42.4°F
28°F
34.2°F
62%
0 in
0%
0%
8.7 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 1.53 μg/m3
PM10: 1.77 μg/m3
Carbon Monoxide: 149.05 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 78.84 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:38 AM
Sunset: 6:21 PM
Daylight: 11 hrs 22 mins
Moonrise: 10:28 PM
Moon Transit: 2:41 AM
Moonset: 7:54 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

2:11 AM - 4:41 AM
11:32 AM - 2:02 PM

Minor Periods

9:58 PM - 11:28 PM
7:24 AM - 8:54 AM

Action Rating: 3 out of 5

Saturday, March 7, 2026

Weather Forecast

Sunny
51.3°F
28.9°F
40.1°F
58%
0 in
0%
0%
24.2 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 1.27 μg/m3
PM10: 1.49 μg/m3
Carbon Monoxide: 145.36 μg/m3
Nitrogen Dioxide: 1.43 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 88.12 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:38 AM
Sunset: 6:22 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:39 PM
Moon Transit: 3:25 AM
Moonset: 8:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
12:16 AM - 2:46 PM

Minor Periods

12:00 AM - 12:00 AM
7:42 AM - 9:12 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Moderate rain
55.8°F
35.1°F
47.4°F
57%
0.22 in
59%
0%
34.7 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 1.12 μg/m3
PM10: 1.16 μg/m3
Carbon Monoxide: 138.51 μg/m3
Nitrogen Dioxide: 1.45 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 76.54 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:38 AM
Sunset: 6:24 PM
Daylight: 11 hrs 29 mins
Moonrise: 12:39 AM
Moon Transit: 4:10 AM
Moonset: 8:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
1:02 PM - 3:32 PM

Minor Periods

8:04 AM - 9:34 AM
12:00 AM - 12:00 AM

Action Rating: 2 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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