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 portions of the central and southern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

WEST FORK (WSFM8)

Lat: 45.81556°NLon: 114.25833°WElev: 4420.0ft.

NA

79°F

26°C

Humidity 11%
Wind Speed SE 3 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Heat Index77°F (25°C)
Last update 21 Apr 03:14 PM MDT
Extended Forecast for

31 Miles W Darby MT

Winter Weather Advisory April 22, 06:00pm until April 24, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A chance of rain and thunderstorms before 3am, then a slight chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 46. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 9am, then showers and possibly a thunderstorm between 9am and noon, then rain after noon. High near 51. Calm wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 51 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain before midnight, then rain, possibly mixed with snow between midnight and 3am, then rain after 3am. Low around 39. West southwest wind 6 to 9 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 39 °F

    Rain then
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow. Some thunder is also possible. Snow level 4100 feet. High near 44. West wind 6 to 9 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow, becoming all snow after 3am. Snow level 4200 feet lowering to 3700 feet after midnight . Low around 32. West northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Friday

    Friday: Snow before 3pm, then rain and snow. High near 44. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 44 °F

    Snow Likely
    then
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before noon, then a chance of rain and snow. Mostly sunny, with a high near 50.

    High: 50 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before midnight. Snow level 4400 feet lowering to 3700 feet after midnight . Mostly cloudy, with a low around 29.

    Low: 29 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
A chance of rain and thunderstorms before 3am, then a slight chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 46. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely before 9am, then showers and possibly a thunderstorm between 9am and noon, then rain after noon. High near 51. Calm wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain before midnight, then rain, possibly mixed with snow between midnight and 3am, then rain after 3am. Low around 39. West southwest wind 6 to 9 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Rain, possibly mixed with snow. Some thunder is also possible. Snow level 4100 feet. High near 44. West wind 6 to 9 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain and snow, becoming all snow after 3am. Snow level 4200 feet lowering to 3700 feet after midnight . Low around 32. West northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow before 3pm, then rain and snow. High near 44. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
A slight chance of snow before noon, then a chance of rain and snow. Mostly sunny, with a high near 50.
Saturday Night
A slight chance of rain and snow before midnight. Snow level 4400 feet lowering to 3700 feet after midnight . Mostly cloudy, with a low around 29.
Sunday
A chance of rain after noon. Partly sunny, with a high near 50.
Sunday Night
A slight chance of rain and snow. Snow level 5000 feet lowering to 4000 feet after midnight . Mostly cloudy, with a low around 32.
Monday
A chance of rain and snow. Snow level 3700 feet rising to 5400 feet in the afternoon. Mostly sunny, with a high near 55.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 35.
Tuesday
A chance of rain. Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
31 Miles W Darby MT
 46°N 114.81°W (Elev. 3717 ft)
Last Update:
2:00 pm MDT Apr 21, 2026
Forecast Valid:
3pm MDT Apr 21, 2026-6pm MDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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