Water Temperature of the Sun River in Simms, MT

Current Water Temperature

46.9°F

Measurement Time: Monday, April 6, 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)
Big Hole River, Glen, MT (145.5 mi)
Big Hole River, Wisdom, MT (148.9 mi)

Weather for Simms, Montana

Current Weather

46°F
Clear
Clear
42.3°F
42.8°F
71%
SSW 7.2 mph
15 mph
40.2°F
31.9°F
0 in
0%
9 mi
1011 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 58°F
L: 36°F
Cloudy
Wed
H: 50°F
L: 27°F
Sunny
Thu
H: 51°F
L: 30°F
Sunny
Fri
H: 68°F
L: 34°F
Sunny
Sat
H: 68°F
L: 44°F

Air Quality

PM2.5: 3.65 μg/m3
PM10: 4.15 μg/m3
Carbon Monoxide: 148.85 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:29 PM
Sunset: 8:06 PM
Daylight: 13 hrs 12 mins
Moonrise: 1:43 AM
Moon Transit: 5:29 AM
Moonset: 9:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 64.3%

Best Times for Fishing or Hunting

Major Periods

4:59 AM - 7:29 AM
2:23 PM - 4:53 PM

Minor Periods

8:44 AM - 10:14 AM
1:13 AM - 2:43 AM

Action Rating: 2 out of 5

High Wind Warning issued April 6 at 12:56PM MDT until April 7 at 9:00PM MDT by NWS Great Falls MT

Effective: Mon April 6, 2026, 12:56 PM
Expires: Tue April 7, 2026, 4:00 AM

* WHAT...Southwest to west winds 30 to 40 mph with gusts up to 75 mph possible. The strongest winds will occur along and west of the Interstate 15 corridor and along and north of the Montana Hwy 200 corridor. * WHERE...Portions of central and north central Montana. * WHEN...From 9 AM to 9 PM MDT Tuesday. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult, especially for high profile or light weight vehicles. Blowing dust could reduce visibility at times.

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


High Wind Warning issued April 6 at 12:56PM MDT until April 7 at 9:00PM MDT by NWS Great Falls MT

Effective: Mon April 6, 2026, 12:56 PM
Expires: Tue April 7, 2026, 4:00 AM

* WHAT...West winds 40 to 50 mph with gusts up to 90 mph possible. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, and Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...From 3 AM to 9 PM MDT Tuesday. * IMPACTS...High winds will move loose debris and damage property. Power outages are possible. Travel will be very difficult, especially for high profile vehicles. Blowing dust may significantly reduce visibility at times, especially along Interstate 15 between Shelby and the Canadian border. * ADDITIONAL DETAILS...A cold front will move through Tuesday afternoon and shut off the strong winds early Tuesday afternoon for the Northern Rocky Mountain Front and adjacent plains west of I-15.

Those operating high profile or light weight vehicles should consider delaying or canceling travel. People are urged to secure loose objects that could be blown around or damaged by the wind.
Tuesday, April 7, 2026

Weather Forecast

Sunny
58.3°F
35.6°F
46.9°F
50%
0 in
0%
0%
35.1 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 3.95 μg/m3
PM10: 4.48 μg/m3
Carbon Monoxide: 156.57 μg/m3
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 82.96 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:29 PM
Sunset: 8:06 PM
Daylight: 13 hrs 12 mins
Moonrise: 1:43 AM
Moon Transit: 5:29 AM
Moonset: 9:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 64.3%

Best Times for Fishing or Hunting

Major Periods

4:59 AM - 7:29 AM
2:23 PM - 4:53 PM

Minor Periods

8:44 AM - 10:14 AM
1:13 AM - 2:43 AM

Action Rating: 2 out of 5

Wednesday, April 8, 2026

Weather Forecast

Cloudy
50.4°F
27.1°F
36.7°F
52%
0 in
0%
0%
11.4 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 1.89 μg/m3
PM10: 2.05 μg/m3
Carbon Monoxide: 145.13 μg/m3
Nitrogen Dioxide: 1.59 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:29 PM
Sunset: 8:08 PM
Daylight: 13 hrs 15 mins
Moonrise: 2:39 AM
Moon Transit: 6:21 AM
Moonset: 10:05 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%

Best Times for Fishing or Hunting

Major Periods

5:51 AM - 8:21 AM
3:15 PM - 5:45 PM

Minor Periods

9:35 AM - 11:05 AM
2:09 AM - 3:39 AM

Action Rating: 2 out of 5

Thursday, April 9, 2026

Weather Forecast

Sunny
51.1°F
29.7°F
38.9°F
58%
0 in
0%
0%
12.5 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.07 μg/m3
PM10: 2.22 μg/m3
Carbon Monoxide: 157.97 μg/m3
Nitrogen Dioxide: 2.9 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 83.88 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:29 PM
Sunset: 8:09 PM
Daylight: 13 hrs 19 mins
Moonrise: 3:23 AM
Moon Transit: 7:12 AM
Moonset: 11:06 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

6:42 AM - 9:12 AM
4:06 PM - 6:36 PM

Minor Periods

10:36 AM - 12:06 AM
2:53 AM - 4:23 AM

Action Rating: 3 out of 5

Friday, April 10, 2026

Weather Forecast

Sunny
67.9°F
34.3°F
49.6°F
48%
0 in
0%
0%
7.8 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 2.82 μg/m3
PM10: 3.41 μg/m3
Carbon Monoxide: 155.43 μg/m3
Nitrogen Dioxide: 3.57 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 76.46 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:28 PM
Sunset: 8:11 PM
Daylight: 13 hrs 22 mins
Moonrise: 3:59 AM
Moon Transit: 8:03 AM
Moonset: 12:14 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
4:56 PM - 7:26 PM

Minor Periods

11:44 AM - 1:14 PM
3:29 AM - 4:59 AM

Action Rating: 2 out of 5

Saturday, April 11, 2026

Weather Forecast

Sunny
68.3°F
44.1°F
52.7°F
40%
0 in
0%
0%
10.1 mph
0


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: 6:47 AM
Sun Transit: 1:28 PM
Sunset: 8:12 PM
Daylight: 13 hrs 25 mins
Moonrise: 4:27 AM
Moon Transit: 8:51 AM
Moonset: 1:25 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

8:21 AM - 10:51 AM
5:44 PM - 8:14 PM

Minor Periods

12:55 AM - 2:25 PM
3:57 AM - 5:27 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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