Water Temperature of the Sun River in Simms, MT

Current Water Temperature

54.3°F

Measurement Time: Monday, September 28, 2026, 6:30 AM 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

68°F

Conditions: Sunny

Humidity: 33%

Wind: WSW 8 mph

Dew Point: 38°F

Weather Forecast

This Afternoon
72°F - Sunny

Tonight
45°F - Mostly Clear

Tuesday
72°F - Mostly Sunny

Tuesday Night
50°F - Mostly Cloudy

Wednesday
67°F - Mostly Sunny

Wednesday Night
40°F - Partly Cloudy

Thursday
70°F - Mostly Sunny

Thursday Night
44°F - Mostly Cloudy

Friday
74°F - Mostly Sunny

Friday Night
44°F - Partly Cloudy

Saturday
65°F - Mostly Sunny

Saturday Night
40°F - Partly Cloudy

Sunday
71°F - Sunny

Sunday Night
44°F - Partly Cloudy

Astronomical

Sunrise: 7:23 AM
Sun Transit: 1:18 PM
Sunset: 7:13 PM
Daylight: 11 hrs 50 mins

Moonrise: 7:43 PM
Moon Transit: 2:30 AM
Moonset: 9:58 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
11:24 AM - 1:54 PM

Minor Periods

7:13 PM - 8:43 PM
9:28 AM - 10:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:23 AM
Sun Transit: 1:18 PM
Sunset: 7:13 PM
Daylight: 11 hrs 50 mins

Moonrise: 7:43 PM
Moon Transit: 2:30 AM
Moonset: 9:58 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
11:24 AM - 1:54 PM

Minor Periods

7:13 PM - 8:43 PM
9:28 AM - 10:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:23 AM
Sun Transit: 1:18 PM
Sunset: 7:13 PM
Daylight: 11 hrs 50 mins

Moonrise: 7:43 PM
Moon Transit: 2:30 AM
Moonset: 9:58 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
11:24 AM - 1:54 PM

Minor Periods

7:13 PM - 8:43 PM
9:28 AM - 10:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:24 AM
Sun Transit: 1:17 PM
Sunset: 7:11 PM
Daylight: 11 hrs 47 mins

Moonrise: 8:12 PM
Moon Transit: 3:22 AM
Moonset: 11:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
12:18 AM - 2:48 PM

Minor Periods

7:42 PM - 9:12 PM
10:50 AM - 12:20 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:24 AM
Sun Transit: 1:17 PM
Sunset: 7:11 PM
Daylight: 11 hrs 47 mins

Moonrise: 8:12 PM
Moon Transit: 3:22 AM
Moonset: 11:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
12:18 AM - 2:48 PM

Minor Periods

7:42 PM - 9:12 PM
10:50 AM - 12:20 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:25 AM
Sun Transit: 1:17 PM
Sunset: 7:09 PM
Daylight: 11 hrs 43 mins

Moonrise: 8:50 PM
Moon Transit: 4:19 AM
Moonset: 12:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
1:16 PM - 3:46 PM

Minor Periods

8:20 PM - 9:50 PM
12:13 AM - 1:43 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:25 AM
Sun Transit: 1:17 PM
Sunset: 7:09 PM
Daylight: 11 hrs 43 mins

Moonrise: 8:50 PM
Moon Transit: 4:19 AM
Moonset: 12:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
1:16 PM - 3:46 PM

Minor Periods

8:20 PM - 9:50 PM
12:13 AM - 1:43 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:27 AM
Sun Transit: 1:17 PM
Sunset: 7:07 PM
Daylight: 11 hrs 40 mins

Moonrise: 9:40 PM
Moon Transit: 5:19 AM
Moonset: 2:00 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:49 AM - 7:19 AM
2:18 PM - 4:48 PM

Minor Periods

9:10 PM - 10:40 PM
1:30 PM - 3:00 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:27 AM
Sun Transit: 1:17 PM
Sunset: 7:07 PM
Daylight: 11 hrs 40 mins

Moonrise: 9:40 PM
Moon Transit: 5:19 AM
Moonset: 2:00 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:49 AM - 7:19 AM
2:18 PM - 4:48 PM

Minor Periods

9:10 PM - 10:40 PM
1:30 PM - 3:00 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:28 AM
Sun Transit: 1:16 PM
Sunset: 7:05 PM
Daylight: 11 hrs 37 mins

Moonrise: 10:46 PM
Moon Transit: 6:22 AM
Moonset: 3:04 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
3:20 PM - 5:50 PM

Minor Periods

10:16 PM - 11:46 PM
2:34 PM - 4:04 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:28 AM
Sun Transit: 1:16 PM
Sunset: 7:05 PM
Daylight: 11 hrs 37 mins

Moonrise: 10:46 PM
Moon Transit: 6:22 AM
Moonset: 3:04 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
3:20 PM - 5:50 PM

Minor Periods

10:16 PM - 11:46 PM
2:34 PM - 4:04 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:29 AM
Sun Transit: 1:16 PM
Sunset: 7:03 PM
Daylight: 11 hrs 33 mins

Moonrise: 12:03 PM
Moon Transit: 7:24 AM
Moonset: 3:54 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
4:22 PM - 6:52 PM

Minor Periods

12:00 AM - 12:00 AM
3:24 PM - 4:54 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:29 AM
Sun Transit: 1:16 PM
Sunset: 7:03 PM
Daylight: 11 hrs 33 mins

Moonrise: 12:03 PM
Moon Transit: 7:24 AM
Moonset: 3:54 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
4:22 PM - 6:52 PM

Minor Periods

12:00 AM - 12:00 AM
3:24 PM - 4:54 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:31 AM
Sun Transit: 1:16 PM
Sunset: 7:01 PM
Daylight: 11 hrs 30 mins

Moonrise: 12:03 AM
Moon Transit: 8:24 AM
Moonset: 4:31 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:54 AM - 10:24 AM
5:20 PM - 7:50 PM

Minor Periods

4:01 PM - 5:31 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:31 AM
Sun Transit: 1:16 PM
Sunset: 7:01 PM
Daylight: 11 hrs 30 mins

Moonrise: 12:03 AM
Moon Transit: 8:24 AM
Moonset: 4:31 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:54 AM - 10:24 AM
5:20 PM - 7:50 PM

Minor Periods

4:01 PM - 5:31 PM
12:00 AM - 12:00 AM

Action Rating: 3 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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