Water Temperature of the Sun River in Simms, MT

Current Water Temperature

55.4°F

Measurement Time: Sunday, August 30, 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

45°F
Clear
Clear
62%
SW 7 mph
33°F

Weather Forecast

Clear
Overnight
43°F - Clear
Sunny
Monday
79°F - Sunny
Mostly Clear
Monday Night
46°F - Mostly Clear
Mostly Sunny
Tuesday
85°F - Mostly Sunny
Slight Chance Rain Showers then Mostly Cloudy
Tuesday Night
53°F - Slight Chance Rain Showers then Mostly Cloudy
Mostly Sunny then Chance Showers And Thunderstorms
Wednesday
79°F - Mostly Sunny then Chance Showers And Thunderstorms
Partly Cloudy
Wednesday Night
46°F - Partly Cloudy
Mostly Sunny
Thursday
75°F - Mostly Sunny
Partly Cloudy
Thursday Night
45°F - Partly Cloudy
Mostly Sunny
Friday
76°F - Mostly Sunny
Partly Cloudy
Friday Night
46°F - Partly Cloudy
Mostly Sunny
Saturday
75°F - Mostly Sunny
Partly Cloudy
Saturday Night
48°F - Partly Cloudy
Mostly Sunny
Sunday
77°F - Mostly Sunny

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:27 PM
Sunset: 8:10 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:16 PM
Moon Transit: 3:47 AM
Moonset: 10:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
12:39 AM - 3:09 PM

Minor Periods

8:46 PM - 10:16 PM
10:25 AM - 11:55 AM

Action Rating: 2 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: 6:46 AM
Sun Transit: 1:27 PM
Sunset: 8:10 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:16 PM
Moon Transit: 3:47 AM
Moonset: 10:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
12:39 AM - 3:09 PM

Minor Periods

8:46 PM - 10:16 PM
10:25 AM - 11:55 AM

Action Rating: 2 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: 6:46 AM
Sun Transit: 1:27 PM
Sunset: 8:10 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:16 PM
Moon Transit: 3:47 AM
Moonset: 10:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
12:39 AM - 3:09 PM

Minor Periods

8:46 PM - 10:16 PM
10:25 AM - 11:55 AM

Action Rating: 2 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: 6:46 AM
Sun Transit: 1:27 PM
Sunset: 8:10 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:16 PM
Moon Transit: 3:47 AM
Moonset: 10:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
12:39 AM - 3:09 PM

Minor Periods

8:46 PM - 10:16 PM
10:25 AM - 11:55 AM

Action Rating: 2 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: 6:47 AM
Sun Transit: 1:27 PM
Sunset: 8:08 PM
Daylight: 13 hrs 21 mins
Moonrise: 9:39 PM
Moon Transit: 4:35 AM
Moonset: 12:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
1:30 PM - 4:00 PM

Minor Periods

9:09 PM - 10:39 PM
11:44 AM - 1:14 PM

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: 6:47 AM
Sun Transit: 1:27 PM
Sunset: 8:08 PM
Daylight: 13 hrs 21 mins
Moonrise: 9:39 PM
Moon Transit: 4:35 AM
Moonset: 12:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
1:30 PM - 4:00 PM

Minor Periods

9:09 PM - 10:39 PM
11:44 AM - 1:14 PM

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: 6:48 AM
Sun Transit: 1:27 PM
Sunset: 8:06 PM
Daylight: 13 hrs 18 mins
Moonrise: 10:09 PM
Moon Transit: 5:28 AM
Moonset: 1:35 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:58 AM - 7:28 AM
2:23 PM - 4:53 PM

Minor Periods

9:39 PM - 11:09 PM
1:05 PM - 2:35 PM

Action Rating: 2 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: 6:48 AM
Sun Transit: 1:27 PM
Sunset: 8:06 PM
Daylight: 13 hrs 18 mins
Moonrise: 10:09 PM
Moon Transit: 5:28 AM
Moonset: 1:35 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:58 AM - 7:28 AM
2:23 PM - 4:53 PM

Minor Periods

9:39 PM - 11:09 PM
1:05 PM - 2:35 PM

Action Rating: 2 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: 6:50 AM
Sun Transit: 1:27 PM
Sunset: 8:04 PM
Daylight: 13 hrs 14 mins
Moonrise: 10:50 PM
Moon Transit: 6:25 AM
Moonset: 2:55 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:55 AM - 8:25 AM
3:22 PM - 5:52 PM

Minor Periods

10:20 PM - 11:50 PM
2:25 PM - 3:55 PM

Action Rating: 2 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: 6:50 AM
Sun Transit: 1:27 PM
Sunset: 8:04 PM
Daylight: 13 hrs 14 mins
Moonrise: 10:50 PM
Moon Transit: 6:25 AM
Moonset: 2:55 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:55 AM - 8:25 AM
3:22 PM - 5:52 PM

Minor Periods

10:20 PM - 11:50 PM
2:25 PM - 3:55 PM

Action Rating: 2 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: 6:51 AM
Sun Transit: 1:26 PM
Sunset: 8:02 PM
Daylight: 13 hrs 11 mins
Moonrise: 11:45 PM
Moon Transit: 7:25 AM
Moonset: 4:08 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
4:23 PM - 6:53 PM

Minor Periods

12:00 AM - 12:00 AM
3:38 PM - 5:08 PM

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: 6:51 AM
Sun Transit: 1:26 PM
Sunset: 8:02 PM
Daylight: 13 hrs 11 mins
Moonrise: 11:45 PM
Moon Transit: 7:25 AM
Moonset: 4:08 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
4:23 PM - 6:53 PM

Minor Periods

12:00 AM - 12:00 AM
3:38 PM - 5:08 PM

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: 6:52 AM
Sun Transit: 1:26 PM
Sunset: 8:00 PM
Daylight: 13 hrs 8 mins
Moonrise: 12:45 AM
Moon Transit: 8:28 AM
Moonset: 5:09 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:58 AM - 10:28 AM
5:26 PM - 7:56 PM

Minor Periods

4:39 PM - 6:09 PM
12:00 AM - 12:00 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: 6:52 AM
Sun Transit: 1:26 PM
Sunset: 8:00 PM
Daylight: 13 hrs 8 mins
Moonrise: 12:45 AM
Moon Transit: 8:28 AM
Moonset: 5:09 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:58 AM - 10:28 AM
5:26 PM - 7:56 PM

Minor Periods

4:39 PM - 6:09 PM
12:00 AM - 12:00 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: 6:53 AM
Sun Transit: 1:26 PM
Sunset: 7:58 PM
Daylight: 13 hrs 4 mins
Moonrise: 12:55 AM
Moon Transit: 9:31 AM
Moonset: 5:55 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

6:28 PM - 8:58 PM
9:01 AM - 11:31 AM

Minor Periods

5:25 PM - 6:55 PM
12:25 AM - 1:55 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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