Water Temperature of the Sun River in Simms, MT

Current Water Temperature

49.5°F

Measurement Time: Thursday, March 19, 2026, 9:30 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

61°F
Partly cloudy
Partly cloudy
61°F
54.6°F
35%
SW 15.9 mph
31.2 mph
51.7°F
30.7°F
0 in
50%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 71°F
L: 50°F
Sunny
Sat
H: 60°F
L: 38°F
Sunny
Sun
H: 51°F
L: 27°F
Overcast
Mon
H: 52°F
L: 34°F
Partly Cloudy
Tue
H: 57°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 4.75 μg/m3
PM10: 4.95 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 2.55 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 8:27 AM
Sunset: 7:41 PM
Daylight: 12 hrs 11 mins
Moonrise: 7:56 AM
Moon Transit: 2:58 PM
Moonset: 10:20 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

9:50 PM - 11:20 PM
7:26 AM - 8:56 AM

Action Rating: 4 out of 5

High Wind Warning issued March 19 at 2:22PM MDT until March 20 at 12:00AM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 2:22 PM
Expires: Fri March 20, 2026, 5:30 AM

* WHAT...For the first High Wind Warning through this evening, southwest winds 35 to 45 mph with gusts up to 85 mph. For the second High Wind Warning in effect from Friday morning through noon Saturday, southwest winds 40 to 50 mph with gusts up to 85 mph expected. * WHERE...The Montana Hi-Line adjacent to the Rocky Mountain Front, and Southern High Plains. * WHEN...For the first High Wind Warning, until midnight MDT tonight. For the second High Wind Warning, from 6 AM Friday to noon MDT Saturday. * IMPACTS...High winds may move loose debris, damage property, and cause isolated power outages. Travel could be difficult to dangerous, especially for high profile or light weight vehicles.

People are urged to secure loose objects that could be blown around or damaged by the wind.


High Wind Warning issued March 19 at 2:22PM MDT until March 21 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 2:22 PM
Expires: Fri March 20, 2026, 5:30 AM

* WHAT...West winds 30 to 40 mph with gusts up to 85 mph expected. * WHERE...Upper Blackfoot and MacDonald Pass and Southern Rocky Mountain Front. * WHEN...From 6 AM Friday to noon MDT Saturday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles.

People are urged to secure loose objects that could be blown around or damaged by the wind. Remember, a High Wind Warning means that there is at least an 80% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the warning period.


High Wind Warning issued March 19 at 2:22PM MDT until March 21 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 2:22 PM
Expires: Fri March 20, 2026, 5:30 AM

* WHAT...For the first High Wind Warning through this evening, southwest winds 35 to 45 mph with gusts up to 85 mph. For the second High Wind Warning in effect from Friday morning through noon Saturday, southwest winds 40 to 50 mph with gusts up to 85 mph expected. * WHERE...The Montana Hi-Line adjacent to the Rocky Mountain Front, and Southern High Plains. * WHEN...For the first High Wind Warning, until midnight MDT tonight. For the second High Wind Warning, from 6 AM Friday to noon MDT Saturday. * IMPACTS...High winds may move loose debris, damage property, and cause isolated power outages. Travel could be difficult to dangerous, especially for high profile or light weight vehicles.

People are urged to secure loose objects that could be blown around or damaged by the wind.


High Wind Warning issued March 19 at 11:00PM MDT until March 21 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 11:00 PM
Expires: Fri March 20, 2026, 3:00 PM

* WHAT...Southwest winds 40 to 50 mph, with gusts up to 90 mph expected. Isolated wind gusts approaching 100 mph are possible along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...The foothills and plains adjacent to the Rocky Mountain Front, and East Glacier Park Region. * WHEN...From 6 AM Friday to noon MDT Saturday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Blowing dust in prone areas could lead to significant reductions in visibility.

People are urged to secure loose objects that could be blown around or damaged by the wind.


High Wind Warning issued March 19 at 11:00PM MDT until March 21 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu March 19, 2026, 11:00 PM
Expires: Fri March 20, 2026, 3:00 PM

* WHAT...West winds 35 to 45 mph, with gusts up to 80 mph expected. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties, Southern Rocky Mountain Front, and Upper Blackfoot and MacDonald Pass. * WHEN...From 6 AM Friday to noon MDT Saturday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Blowing dust in prone areas could lead to significant reductions in visibility.

People are urged to secure loose objects that could be blown around or damaged by the wind.
Friday, March 20, 2026

Weather Forecast

Sunny
71.2°F
50.2°F
60.2°F
42%
0 in
0%
0%
27.7 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 3.84 μg/m3
PM10: 4.11 μg/m3
Carbon Monoxide: 120.25 μg/m3
Nitrogen Dioxide: 1.44 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 88.24 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 8:27 AM
Sunset: 7:41 PM
Daylight: 12 hrs 11 mins
Moonrise: 7:56 AM
Moon Transit: 2:58 PM
Moonset: 10:20 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

9:50 PM - 11:20 PM
7:26 AM - 8:56 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Sunny
59.5°F
37.6°F
47.6°F
62%
0 in
0%
0%
25.7 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 2.99 μg/m3
PM10: 3.34 μg/m3
Carbon Monoxide: 113.73 μg/m3
Nitrogen Dioxide: 1.17 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 81.44 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 7:42 PM
Daylight: 12 hrs 14 mins
Moonrise: 8:17 AM
Moon Transit: 3:51 PM
Moonset: 11:44 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:21 PM - 5:51 PM

Minor Periods

12:00 AM - 12:00 AM
7:47 AM - 9:17 AM

Action Rating: 3 out of 5

Sunday, March 22, 2026

Weather Forecast

Sunny
51.1°F
27.1°F
39°F
49%
0 in
0%
0%
9.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.62 μg/m3
PM10: 3.68 μg/m3
Carbon Monoxide: 142.45 μg/m3
Nitrogen Dioxide: 2.02 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 94.04 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:43 PM
Daylight: 12 hrs 17 mins
Moonrise: 8:44 AM
Moon Transit: 4:48 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
4:18 PM - 6:48 PM

Minor Periods

8:14 AM - 9:44 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, March 23, 2026

Weather Forecast

Overcast
51.9°F
34.2°F
42.8°F
38%
0 in
0%
0%
10.7 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 3.53 μg/m3
PM10: 4.57 μg/m3
Carbon Monoxide: 149.42 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 81.28 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 7:45 PM
Daylight: 12 hrs 21 mins
Moonrise: 9:19 AM
Moon Transit: 5:48 PM
Moonset: 1:10 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
5:18 PM - 7:48 PM

Minor Periods

8:49 AM - 10:19 AM
12:40 AM - 2:10 AM

Action Rating: 3 out of 5

Tuesday, March 24, 2026

Weather Forecast

Partly Cloudy
56.9°F
36.1°F
43.9°F
53%
0 in
0%
0%
17.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.89 μg/m3
PM10: 5.26 μg/m3
Carbon Monoxide: 165.27 μg/m3
Nitrogen Dioxide: 5.63 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 70.46 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:00 AM
Sunset: 7:46 PM
Daylight: 12 hrs 24 mins
Moonrise: 10:08 AM
Moon Transit: 6:51 PM
Moonset: 2:30 AM
Moon Phase: Waxing Crescent
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

2:46 AM - 5:16 AM
6:21 PM - 8:51 PM

Minor Periods

9:38 AM - 11:08 AM
2:00 AM - 3:30 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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