Weather for Simms, Montana
Current Weather
Humidity: 62%
Feels Like: 12.5°F
Wind: SW 4.5 mph
Wind Gusts: 9.4 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Sun
H: 23°F
L: -6°F
Mon
H: 35°F
L: 17°F
Tue
H: 31°F
L: 22°F
Wed
H: 37°F
L: 16°F
Thu
H: 33°F
L: 13°F
Air Quality
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 60 μg/m3
Astronomical
Sun Transit: 12:16 AM
Sunset: 4:39 PM
Daylight: 8 hrs 45 mins
Moon Transit: 8:40 PM
Moonset: 2:19 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%
Best Times for Fishing or Hunting
Major Periods
4:44 AM - 7:14 AM8:10 PM - 10:40 PM
Minor Periods
1:28 PM - 2:58 PM1:49 AM - 3:19 AM
Action Rating: 2 out of 5
Winter Weather Advisory issued November 30 at 1:09PM MST until December 2 at 11:00PM MST by NWS Great Falls MT
Effective: Sun November 30, 2025, 1:09 PM
Expires: Mon December 1, 2025, 4:15 AM
* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. Winds gusting as high as 40 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...From 5 PM Monday to 11 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions and periods of lower visibility.
Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.
Winter Weather Advisory issued November 30 at 1:09PM MST until December 3 at 5:00AM MST by NWS Great Falls MT
Effective: Sun November 30, 2025, 1:09 PM
Expires: Mon December 1, 2025, 4:15 AM
* WHAT...Snow expected. Total snow accumulations between 2 and 7 inches. Winds gusting as high as 35 mph. * WHERE...The Highwood, Little Belt, Judith, and Snowy Mountains, Big Belt, Bridger and Castle Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 11 PM Monday to 5 AM MST Wednesday. * IMPACTS...Plan on slippery road conditions and periods of lower visibility.
Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.
Weather Forecast
Average Temperature: 8.7°F
Average Humidity: 68%
Wind: 6 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 17.02 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 34.56 μg/m3
Astronomical
Sun Transit: 12:16 AM
Sunset: 4:39 PM
Daylight: 8 hrs 45 mins
Moon Transit: 8:40 PM
Moonset: 2:19 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%
Best Times for Fishing or Hunting
Major Periods
4:44 AM - 7:14 AM8:10 PM - 10:40 PM
Minor Periods
1:28 PM - 2:58 PM1:49 AM - 3:19 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 26°F
Average Humidity: 70%
Wind: 19 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 6.05 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 61.52 μg/m3
Astronomical
Sun Transit: 12:16 AM
Sunset: 4:39 PM
Daylight: 8 hrs 44 mins
Moon Transit: 9:32 PM
Moonset: 3:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%
Best Times for Fishing or Hunting
Major Periods
5:34 AM - 8:04 AM9:02 PM - 11:32 PM
Minor Periods
1:48 PM - 3:18 PM3:10 AM - 4:40 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 28.5°F
Average Humidity: 86%
Wind: 13 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 2.7 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 81.28 μg/m3
Astronomical
Sun Transit: 12:17 AM
Sunset: 4:38 PM
Daylight: 8 hrs 42 mins
Moon Transit: 10:29 PM
Moonset: 5:06 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%
Best Times for Fishing or Hunting
Major Periods
6:27 AM - 8:57 AM12:00 AM - 12:00 AM
Minor Periods
2:12 PM - 3:42 PM4:36 AM - 6:06 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 24.8°F
Average Humidity: 86%
Wind: 8.5 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 3.54 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 74.88 μg/m3
Astronomical
Sun Transit: 12:17 AM
Sunset: 4:38 PM
Daylight: 8 hrs 41 mins
Moon Transit: 11:31 PM
Moonset: 6:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.1%
Best Times for Fishing or Hunting
Major Periods
7:26 AM - 9:56 AM12:00 AM - 12:00 AM
Minor Periods
2:44 PM - 4:14 PM6:06 AM - 7:36 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 23.7°F
Average Humidity: 84%
Wind: 15.4 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 84.23 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 4:38 PM
Daylight: 8 hrs 39 mins
Moon Transit: 12:00 AM
Moonset: 8:05 AM
Moon Phase: Full
Moon Illumination: 99.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM8:30 AM - 11:00 AM
Minor Periods
3:28 PM - 4:58 PM7:35 AM - 9:05 AM
Action Rating: 5 out of 5