Water Temperature of the Sun River in Simms, MT

Current Water Temperature

60.3°F

Measurement Time: Sunday, September 6, 2026, 10:30 PM 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)
Clark Fork River, Superior, MT (140.1 mi)
Big Hole River, Glen, MT (145.5 mi)

Weather for Simms, Montana

Current Weather

51°F
Light Rain
Light Rain
99%
NW 5 mph
51°F

Weather Forecast

Light Rain
Overnight
49°F - Light Rain
Rain then Chance T-storms
Labor Day
63°F - Rain then Chance T-storms
Chance Light Rain
Monday Night
44°F - Chance Light Rain
Light Rain Likely
Tuesday
65°F - Light Rain Likely
Partly Cloudy
Tuesday Night
41°F - Partly Cloudy
Sunny
Wednesday
77°F - Sunny
Mostly Clear
Wednesday Night
49°F - Mostly Clear
Sunny
Thursday
79°F - Sunny
Partly Cloudy then Slight Chance Rain Showers
Thursday Night
45°F - Partly Cloudy then Slight Chance Rain Showers
Slight Chance Rain Showers
Friday
63°F - Slight Chance Rain Showers
Chance Rain Showers
Friday Night
38°F - Chance Rain Showers
Chance Rain Showers
Saturday
55°F - Chance Rain Showers
Chance Rain Showers
Saturday Night
36°F - Chance Rain Showers
Chance Rain Showers
Sunday
59°F - Chance Rain Showers

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:25 PM
Sunset: 7:56 PM
Daylight: 13 hrs 1 mins
Moonrise: 2:15 AM
Moon Transit: 10:30 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:26 PM - 9:56 PM
10:00 AM - 12:30 AM

Minor Periods

5:59 PM - 7:29 PM
1:45 AM - 3:15 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:25 PM
Sunset: 7:56 PM
Daylight: 13 hrs 1 mins
Moonrise: 2:15 AM
Moon Transit: 10:30 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:26 PM - 9:56 PM
10:00 AM - 12:30 AM

Minor Periods

5:59 PM - 7:29 PM
1:45 AM - 3:15 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:25 PM
Sunset: 7:56 PM
Daylight: 13 hrs 1 mins
Moonrise: 2:15 AM
Moon Transit: 10:30 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:26 PM - 9:56 PM
10:00 AM - 12:30 AM

Minor Periods

5:59 PM - 7:29 PM
1:45 AM - 3:15 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:25 PM
Sunset: 7:56 PM
Daylight: 13 hrs 1 mins
Moonrise: 2:15 AM
Moon Transit: 10:30 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:26 PM - 9:56 PM
10:00 AM - 12:30 AM

Minor Periods

5:59 PM - 7:29 PM
1:45 AM - 3:15 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:25 PM
Sunset: 7:54 PM
Daylight: 12 hrs 58 mins
Moonrise: 3:39 AM
Moon Transit: 11:26 AM
Moonset: 6:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:20 PM - 10:50 PM
10:56 AM - 1:26 PM

Minor Periods

6:25 PM - 7:55 PM
3:09 AM - 4:39 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:25 PM
Sunset: 7:54 PM
Daylight: 12 hrs 58 mins
Moonrise: 3:39 AM
Moon Transit: 11:26 AM
Moonset: 6:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:20 PM - 10:50 PM
10:56 AM - 1:26 PM

Minor Periods

6:25 PM - 7:55 PM
3:09 AM - 4:39 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:24 PM
Sunset: 7:52 PM
Daylight: 12 hrs 54 mins
Moonrise: 5:03 AM
Moon Transit: 12:17 AM
Moonset: 7:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:11 PM - 11:41 PM
11:47 AM - 2:17 PM

Minor Periods

6:45 PM - 8:15 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:24 PM
Sunset: 7:52 PM
Daylight: 12 hrs 54 mins
Moonrise: 5:03 AM
Moon Transit: 12:17 AM
Moonset: 7:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:11 PM - 11:41 PM
11:47 AM - 2:17 PM

Minor Periods

6:45 PM - 8:15 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:24 PM
Sunset: 7:50 PM
Daylight: 12 hrs 51 mins
Moonrise: 6:23 AM
Moon Transit: 1:06 PM
Moonset: 7:33 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:36 AM - 3:06 PM

Minor Periods

7:03 PM - 8:33 PM
5:53 AM - 7:23 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:24 PM
Sunset: 7:50 PM
Daylight: 12 hrs 51 mins
Moonrise: 6:23 AM
Moon Transit: 1:06 PM
Moonset: 7:33 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:36 AM - 3:06 PM

Minor Periods

7:03 PM - 8:33 PM
5:53 AM - 7:23 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:24 PM
Sunset: 7:47 PM
Daylight: 12 hrs 47 mins
Moonrise: 7:40 AM
Moon Transit: 1:52 PM
Moonset: 7:49 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:22 PM - 3:52 PM

Minor Periods

7:19 PM - 8:49 PM
7:10 AM - 8:40 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:24 PM
Sunset: 7:47 PM
Daylight: 12 hrs 47 mins
Moonrise: 7:40 AM
Moon Transit: 1:52 PM
Moonset: 7:49 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:22 PM - 3:52 PM

Minor Periods

7:19 PM - 8:49 PM
7:10 AM - 8:40 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:23 PM
Sunset: 7:45 PM
Daylight: 12 hrs 44 mins
Moonrise: 8:56 AM
Moon Transit: 2:37 PM
Moonset: 8:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:07 PM - 4:37 PM

Minor Periods

7:36 PM - 9:06 PM
8:26 AM - 9:56 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:23 PM
Sunset: 7:45 PM
Daylight: 12 hrs 44 mins
Moonrise: 8:56 AM
Moon Transit: 2:37 PM
Moonset: 8:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:07 PM - 4:37 PM

Minor Periods

7:36 PM - 9:06 PM
8:26 AM - 9:56 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 1:23 PM
Sunset: 7:43 PM
Daylight: 12 hrs 41 mins
Moonrise: 10:10 AM
Moon Transit: 3:22 PM
Moonset: 8:24 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:52 PM - 5:22 PM

Minor Periods

7:54 PM - 9:24 PM
9:40 AM - 11:10 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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