Water Temperature of the Sun River in Simms, MT

Current Water Temperature

60.4°F

Measurement Time: Thursday, May 7, 2026, 12:30 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)
Big Hole River, Glen, MT (145.5 mi)
Big Hole River, Wisdom, MT (148.9 mi)

Weather for Simms, Montana

Current Weather

62.1°F
Light rain
Light rain
62.1°F
59.9°F
46%
W 14.8 mph
19.4 mph
59.9°F
45.6°F
0 in
100%
9 mi
1012 mbar
0.3

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 68°F
L: 50°F
Sunny
Fri
H: 73°F
L: 45°F
Patchy rain nearby
Sat
H: 58°F
L: 49°F
Sunny
Sun
H: 77°F
L: 46°F
Sunny
Mon
H: 72°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 5.45 μg/m3
PM10: 6.15 μg/m3
Carbon Monoxide: 145.85 μg/m3
Nitrogen Dioxide: 7.05 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:24 PM
Sunset: 8:48 PM
Daylight: 14 hrs 47 mins
Moonrise: 1:57 AM
Moon Transit: 5:56 AM
Moonset: 10:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
2:49 PM - 5:19 PM

Minor Periods

9:31 AM - 11:01 AM
1:27 AM - 2:57 AM

Action Rating: 2 out of 5

Special Weather Statement issued May 7 at 5:20PM MDT by NWS Great Falls MT

Effective: Thu May 7, 2026, 5:20 PM
Expires: Thu May 7, 2026, 7:00 PM

Scattered thunderstorms are moving southeastward through the Browning, Cut Bank, Valier and Heart Butte areas early this evening. Some of these storms could produce a brief period of heavy rain, wind gusts near 40 mph, pea size hail, along with occasional lightning strikes. Those who plan to be outside this evening should be alert for nearby thunderstorms, and if you see lightning or hear thunder, go inside until the storm passes.


Thursday, May 7, 2026

Weather Forecast

Patchy rain nearby
67.8°F
50.2°F
58.6°F
52%
0.13 in
86%
0%
16.8 mph
4.5


Air Quality

AQI: 1 - Good
PM2.5: 6.57 μg/m3
PM10: 8.15 μg/m3
Carbon Monoxide: 135.85 μg/m3
Nitrogen Dioxide: 2.52 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 85.96 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:24 PM
Sunset: 8:48 PM
Daylight: 14 hrs 47 mins
Moonrise: 1:57 AM
Moon Transit: 5:56 AM
Moonset: 10:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
2:49 PM - 5:19 PM

Minor Periods

9:31 AM - 11:01 AM
1:27 AM - 2:57 AM

Action Rating: 2 out of 5

Friday, May 8, 2026

Weather Forecast

Sunny
73°F
45.4°F
58.6°F
55%
0 in
0%
0%
18.8 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 5.65 μg/m3
PM10: 6.73 μg/m3
Carbon Monoxide: 140.09 μg/m3
Nitrogen Dioxide: 3.67 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 78.16 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:24 PM
Sunset: 8:50 PM
Daylight: 14 hrs 50 mins
Moonrise: 2:28 AM
Moon Transit: 6:44 AM
Moonset: 11:10 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
3:37 PM - 6:07 PM

Minor Periods

10:40 AM - 12:10 AM
1:58 AM - 3:28 AM

Action Rating: 3 out of 5

Saturday, May 9, 2026

Weather Forecast

Patchy rain nearby
57.9°F
48.5°F
52.9°F
58%
0.01 in
89%
0%
13.4 mph
4.7


Air Quality

AQI: 1 - Good
PM2.5: 7.31 μg/m3
PM10: 8.73 μg/m3
Carbon Monoxide: 132.57 μg/m3
Nitrogen Dioxide: 2.33 μg/m3
Sulphur Dioxide: 2.34 μg/m3
Ozone: 103.32 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:24 PM
Sunset: 8:51 PM
Daylight: 14 hrs 52 mins
Moonrise: 2:51 AM
Moon Transit: 7:31 AM
Moonset: 12:22 AM
Moon Phase: Last Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
4:23 PM - 6:53 PM

Minor Periods

11:52 AM - 1:22 PM
2:21 AM - 3:51 AM

Action Rating: 2 out of 5

Sunday, May 10, 2026

Weather Forecast

Sunny
76.8°F
45.5°F
61.3°F
45%
0 in
0%
0%
14.5 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 5.27 μg/m3
PM10: 7.8 μg/m3
Carbon Monoxide: 144.98 μg/m3
Nitrogen Dioxide: 4.3 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 84.4 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:24 PM
Sunset: 8:52 PM
Daylight: 14 hrs 55 mins
Moonrise: 3:11 AM
Moon Transit: 8:16 AM
Moonset: 1:34 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

7:46 AM - 10:16 AM
5:07 PM - 7:37 PM

Minor Periods

1:04 PM - 2:34 PM
2:41 AM - 4:11 AM

Action Rating: 2 out of 5

Monday, May 11, 2026

Weather Forecast

Sunny
72.1°F
51.8°F
61.4°F
36%
0 in
0%
0%
17.9 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 4.21 μg/m3
PM10: 6.92 μg/m3
Carbon Monoxide: 146.71 μg/m3
Nitrogen Dioxide: 2.61 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 100.77 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:24 PM
Sunset: 8:54 PM
Daylight: 14 hrs 58 mins
Moonrise: 3:28 AM
Moon Transit: 9:00 AM
Moonset: 2:47 PM
Moon Phase: Last Quarter
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
5:52 PM - 8:22 PM

Minor Periods

2:17 PM - 3:47 PM
2:58 AM - 4:28 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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