Water Temperature of the Sun River in Simms, MT

Current Water Temperature

45.1°F 7.3°C
Frigid Dangerously Cold
45.1°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Monday, November 9, 2026, 7:30 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)
Clark Fork River, Superior, MT (140.1 mi)
Big Hole River, Glen, MT (145.5 mi)

Weather for Simms, Montana

Current Weather

56°F
Overcast
Conditions: Overcast
Humidity: 44%
Feels Like: 48.4°F
Wind: SSW 9.4 mph
Wind Gusts: 17.2 mph
Pressure: 29.92 in
Precipitation: 0 in
Cloud Cover: 93%
Visibility: 6 mi
UV Index: 0.4

Weather Forecast

Overcast
Mon
H: 56°F
L: 40°F
Overcast
Tue
H: 56°F
L: 45°F
Partly Cloudy
Wed
H: 62°F
L: 45°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
1.5 μg/m³
Good
PM10
2.1 μg/m³
Good
Ozone (O3)
69 μg/m³
Photochemical
NO2
1.1 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
118 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 35m daylight
Sunrise 7:24 AM
Solar Noon 12:11 PM
Sunset 4:59 PM
Moon
New • 2%
Moonrise 8:12 AM
Transit 12:29 PM
Moonset 4:41 PM

Best Times for Fishing or Hunting

Major Periods

11:59 AM - 2:29 PM
11:35 PM - 2:05 AM

Minor Periods

7:42 AM - 9:12 AM
4:11 PM - 5:41 PM
Action Rating:
Very Good 4/5
Monday, November 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 45.9°F
Average Humidity: 58%
Chance of Rain: 22%
Wind: 10.1 mph
UV Index: 1.2

Astronomical

Sun
9h 35m daylight
Sunrise 7:24 AM
Solar Noon 12:11 PM
Sunset 4:59 PM
Moon
New • 2%
Moonrise 8:12 AM
Transit 12:29 PM
Moonset 4:41 PM

Best Times for Fishing or Hunting

Major Periods

11:59 AM - 2:29 PM
11:35 PM - 2:05 AM

Minor Periods

7:42 AM - 9:12 AM
4:11 PM - 5:41 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 49.2°F
Average Humidity: 55%
Chance of Rain: 7%
Wind: 23.3 mph
UV Index: 1.5

Astronomical

Sun
9h 32m daylight
Sunrise 7:25 AM
Solar Noon 12:11 PM
Sunset 4:57 PM
Moon
New • 0%
Moonrise 9:20 AM
Transit 1:20 PM
Moonset 5:15 PM

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 AM
12:50 PM - 3:20 PM

Minor Periods

8:50 AM - 10:20 AM
4:45 PM - 6:15 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 52.4°F
Average Humidity: 52%
Chance of Rain: 8%
Wind: 17.9 mph
UV Index: 1.7

Astronomical

Sun
9h 29m daylight
Sunrise 7:27 AM
Solar Noon 12:11 PM
Sunset 4:56 PM
Moon
New • 2%
Moonrise 10:23 AM
Transit 2:11 PM
Moonset 5:59 PM

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
1:41 PM - 4:11 PM

Minor Periods

9:53 AM - 11:23 AM
5:29 PM - 6:59 PM
Action Rating:
Good Action 3/5
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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