Water Temperature of the Sun River in Simms, MT

Current Water Temperature

41.7°F

Measurement Time: Saturday, March 7, 2026, 4:30 AM MST

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

55°F
Sunny
Sunny
49.9°F
52.5°F
40%
WSW 22.1 mph
27.1 mph
46.2°F
34.6°F
0 in
0%
9 mi
1008 mbar
4

Five Day Weather Forecast

Sunny
Sat
H: 62°F
L: 36°F
Sunny
Sun
H: 55°F
L: 41°F
Sunny
Mon
H: 38°F
L: 26°F
Light freezing rain
Tue
H: 34°F
L: 21°F
Sunny
Wed
H: 43°F
L: 24°F

Air Quality

AQI: 1 - Good
PM2.5: 0.85 μg/m3
PM10: 0.95 μg/m3
Carbon Monoxide: 142.85 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:38 AM
Sunset: 6:22 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:39 PM
Moon Transit: 3:25 AM
Moonset: 8:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
12:16 AM - 2:46 PM

Minor Periods

12:00 AM - 12:00 AM
7:42 AM - 9:12 AM

Action Rating: 2 out of 5

High Wind Watch issued March 6 at 1:19PM MST until March 8 at 11:00PM MST by NWS Great Falls MT

Effective: Fri March 6, 2026, 1:19 PM
Expires: Sat March 7, 2026, 7:30 AM

* WHAT...West winds 30 to 45 mph with gusts up to 70 mph possible. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. Damaging winds may blow down trees and power lines. Blowing dust could significantly reduce visibility at times.

Monitor the latest forecasts and warnings for updates. Remember, a High Wind Watch means that there is at least a 50% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the watch period.


High Wind Warning issued March 6 at 1:19PM MST until March 8 at 11:00PM MST by NWS Great Falls MT

Effective: Fri March 6, 2026, 1:19 PM
Expires: Sat March 7, 2026, 7:30 AM

* WHAT...Westerly winds 40 to 60 mph, with gusts up to 85 mph. Isolated wind gusts over 100 mph are expected along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, and Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...From 2 AM MST Saturday to midnight MDT Sunday Night. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are likely. Travel will be difficult to dangerous, especially for high profile vehicles.

People are urged to secure loose objects that could be blown around or damaged by the wind. If possible, consider delaying travel during the period of highest winds or finding an alternate route.


High Wind Warning issued March 6 at 11:45PM MST until March 8 at 11:00PM MST by NWS Great Falls MT

Effective: Fri March 6, 2026, 11:45 PM
Expires: Sat March 7, 2026, 2:45 PM

* WHAT...West winds 30 to 45 mph with gusts up to 75 mph expected. * WHERE...Portions of central and north central Montana. * WHEN...From 3 AM Sunday to midnight MDT Sunday Night. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are likely. Travel will be difficult to dangerous, especially for high profile vehicles. Blowing dust could significantly reduce visibility at times.

People are urged to secure loose objects that could be blown around or damaged by the wind. If possible, consider delaying travel during the period of highest winds or finding an alternate route.


High Wind Warning issued March 6 at 11:45PM MST until March 8 at 11:00PM MST by NWS Great Falls MT

Effective: Fri March 6, 2026, 11:45 PM
Expires: Sat March 7, 2026, 2:45 PM

* WHAT...Westerly winds 40 to 60 mph, with gusts up to 90 mph. Isolated wind gusts over 100 mph are expected along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, and Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...Until midnight MDT Sunday Night. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are likely. Travel will be difficult to very dangerous, especially for high profile vehicles. * ADDITIONAL DETAILS...On Sunday the magnitude and duration of the winds will be similar to the December 17th event.

People are urged to secure loose objects that could be blown around or damaged by the wind. If possible, consider delaying travel during the period of highest winds or finding an alternate route.


High Wind Watch issued March 6 at 1:19PM MST until March 8 at 11:00PM MST by NWS Great Falls MT

Effective: Fri March 6, 2026, 1:19 PM
Expires: Sat March 7, 2026, 7:30 AM

* WHAT...On Saturday, west winds 25 to 40 mph with gusts up to 60 mph possible. On Sunday, west winds 35 to 45 mph with gusts up to 70 mph possible. * WHERE...Cascade County below 5000ft, Fergus County below 4500ft, and Judith Basin County and Judith Gap. * WHEN...From Saturday morning through Sunday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. Damaging winds may blow down trees and power lines. * ADDITIONAL DETAILS...There will be a brief lull in high winds Saturday night before the strongest winds arrive on Sunday.

Monitor the latest forecasts and warnings for updates. Remember, a High Wind Watch means that there is at least a 50% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the watch period.


Saturday, March 7, 2026

Weather Forecast

Sunny
61.9°F
36.1°F
48.7°F
50%
0 in
0%
0%
24.8 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 1.2 μg/m3
PM10: 1.39 μg/m3
Carbon Monoxide: 148.29 μg/m3
Nitrogen Dioxide: 1.39 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 85.12 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:38 AM
Sunset: 6:22 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:39 PM
Moon Transit: 3:25 AM
Moonset: 8:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
12:16 AM - 2:46 PM

Minor Periods

12:00 AM - 12:00 AM
7:42 AM - 9:12 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Sunny
54.7°F
41°F
47.5°F
60%
0 in
0%
0%
44.3 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 1.49 μg/m3
PM10: 1.59 μg/m3
Carbon Monoxide: 131.49 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 85.56 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:38 AM
Sunset: 6:24 PM
Daylight: 11 hrs 29 mins
Moonrise: 12:39 AM
Moon Transit: 4:10 AM
Moonset: 8:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
1:02 PM - 3:32 PM

Minor Periods

8:04 AM - 9:34 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, March 9, 2026

Weather Forecast

Sunny
38.3°F
25.7°F
32.5°F
47%
0 in
0%
0%
23.9 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.56 μg/m3
PM10: 3.41 μg/m3
Carbon Monoxide: 144.25 μg/m3
Nitrogen Dioxide: 1.47 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 102.92 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:38 AM
Sunset: 6:25 PM
Daylight: 11 hrs 33 mins
Moonrise: 12:49 AM
Moon Transit: 4:57 AM
Moonset: 9:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
1:50 PM - 4:20 PM

Minor Periods

8:30 AM - 10:00 AM
12:19 AM - 1:49 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Light freezing rain
34°F
20.5°F
27.4°F
48%
0.01 in
79%
13%
19.2 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.59 μg/m3
PM10: 5.02 μg/m3
Carbon Monoxide: 148.76 μg/m3
Nitrogen Dioxide: 1.57 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 97.96 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:37 AM
Sunset: 6:27 PM
Daylight: 11 hrs 36 mins
Moonrise: 1:55 AM
Moon Transit: 5:47 AM
Moonset: 9:35 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

5:17 AM - 7:47 AM
2:40 PM - 5:10 PM

Minor Periods

9:05 AM - 10:35 AM
1:25 AM - 2:55 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Sunny
43.2°F
24.3°F
34.1°F
44%
0 in
0%
0%
28.2 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 6.75 μg/m3
Carbon Monoxide: 154.77 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.58 μg/m3
Ozone: 99.17 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:37 AM
Sunset: 6:28 PM
Daylight: 11 hrs 39 mins
Moonrise: 2:56 AM
Moon Transit: 6:38 AM
Moonset: 10:20 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:08 AM - 8:38 AM
3:32 PM - 6:02 PM

Minor Periods

9:50 AM - 11:20 AM
2:26 AM - 3:56 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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