National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Clear

77°F

25°C

Humidity 15%
Wind Speed E 5 MPH
Barometer 29.54 in (1000.34 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 21 Apr 06:55 PM MDT
Extended Forecast for

Hamilton MT

  • Tonight

    Tonight: A slight chance of rain between 3am and 5am. Partly cloudy, with a low around 44. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 56. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    High: 56 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain. Low around 36. South southwest wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Rain

  • Thursday

    Thursday: Rain likely before 9am, then rain, possibly mixed with snow. Some thunder is also possible. High near 47. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain, possibly mixed with snow before midnight, then a chance of snow. Low around 29. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Snow Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain between 3am and 5am. Partly cloudy, with a low around 44. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Rain and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 56. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Wednesday Night
Rain. Low around 36. South southwest wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely before 9am, then rain, possibly mixed with snow. Some thunder is also possible. High near 47. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Rain, possibly mixed with snow before midnight, then a chance of snow. Low around 29. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
A slight chance of rain. Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hamilton MT
 46.24°N 114.14°W (Elev. 3678 ft)
Last Update:
2:00 pm MDT Apr 21, 2026
Forecast Valid:
7pm MDT Apr 21, 2026-6pm MDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation