Water Temperature of the Sun River in Simms, MT

Current Water Temperature

72.5°F

Measurement Time: Sunday, July 19, 2026, 5:30 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

70°F
Clear
Clear
70°F
73.2°F
32%
WNW 4.5 mph
9.4 mph
70.5°F
36.2°F
0 in
0%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 86°F
L: 64°F
Sunny
Mon
H: 79°F
L: 60°F
Sunny
Tue
H: 83°F
L: 61°F
Sunny
Wed
H: 85°F
L: 65°F
Sunny
Thu
H: 95°F
L: 67°F

Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 4.7 μg/m3
Carbon Monoxide: 122 μg/m3
Nitrogen Dioxide: 5.3 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 76 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:34 PM
Sunset: 9:17 PM
Daylight: 15 hrs 27 mins
Moonrise: 12:26 AM
Moon Transit: 6:09 PM
Moonset: 12:24 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:16 AM - 4:46 AM
5:39 PM - 8:09 PM

Minor Periods

11:56 AM - 1:26 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
86.2°F
63.9°F
75°F
37%
0 in
1%
0%
19.9 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 9.63 μg/m3
PM10: 10.38 μg/m3
Carbon Monoxide: 115.79 μg/m3
Nitrogen Dioxide: 2.88 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 87.46 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:34 PM
Sunset: 9:17 PM
Daylight: 15 hrs 27 mins
Moonrise: 12:26 AM
Moon Transit: 6:09 PM
Moonset: 12:24 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:16 AM - 4:46 AM
5:39 PM - 8:09 PM

Minor Periods

11:56 AM - 1:26 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
79.3°F
60.3°F
69.5°F
44%
0 in
2%
0%
12.3 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 5.55 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 114.08 μg/m3
Nitrogen Dioxide: 4.12 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 78.54 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:34 PM
Sunset: 9:16 PM
Daylight: 15 hrs 25 mins
Moonrise: 1:37 PM
Moon Transit: 6:52 PM
Moonset: 12:40 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:00 AM - 5:30 AM
6:22 PM - 8:52 PM

Minor Periods

1:07 PM - 2:37 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
83.3°F
61.3°F
72.4°F
48%
0 in
2%
0%
7.4 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 4.16 μg/m3
PM10: 4.44 μg/m3
Carbon Monoxide: 112.46 μg/m3
Nitrogen Dioxide: 1.77 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 84.08 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:34 PM
Sunset: 9:15 PM
Daylight: 15 hrs 22 mins
Moonrise: 2:48 PM
Moon Transit: 7:36 PM
Moonset: 12:57 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

3:43 AM - 6:13 AM
7:06 PM - 9:36 PM

Minor Periods

2:18 PM - 3:48 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
85.2°F
64.8°F
74.1°F
49%
0 in
17%
0%
8.5 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 5.56 μg/m3
PM10: 6.02 μg/m3
Carbon Monoxide: 123.5 μg/m3
Nitrogen Dioxide: 3.41 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 79.04 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:34 PM
Sunset: 9:14 PM
Daylight: 15 hrs 20 mins
Moonrise: 3:58 PM
Moon Transit: 8:22 PM
Moonset: 12:17 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
7:52 PM - 10:22 PM

Minor Periods

3:28 PM - 4:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
95.1°F
66.5°F
80.3°F
40%
0.01 in
17%
0%
11.2 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 6.62 μg/m3
PM10: 7.11 μg/m3
Carbon Monoxide: 120.73 μg/m3
Nitrogen Dioxide: 5.07 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 74.67 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:34 PM
Sunset: 9:13 PM
Daylight: 15 hrs 18 mins
Moonrise: 5:06 PM
Moon Transit: 9:10 PM
Moonset: 12:41 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

5:15 AM - 7:45 AM
8:40 PM - 11:10 PM

Minor Periods

4:36 PM - 6:06 PM
12:11 AM - 1:41 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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