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 >

Hazardous Weather Conditions

Current conditions at

JETTE (JETM8)

Lat: 47.76706°NLon: 114.23378°WElev: 3593.0ft.

NA

73°F

23°C

Humidity 31%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 21 Apr 06:43 PM MDT
Extended Forecast for

3 Miles NW Swan Lake MT

Winter Weather Advisory April 22, 06:00pm until April 23, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Light east southeast wind.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 1pm, then showers and possibly a thunderstorm between 1pm and 3pm, then rain after 3pm. High near 62. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Rain before 3am, then rain, possibly mixed with snow. Low around 36. West southwest wind 3 to 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain then
    Rain/Snow

  • Thursday

    Thursday: Rain and snow before noon, then snow between noon and 3pm, then rain, possibly mixed with snow after 3pm. Snow level 4000 feet lowering to 3200 feet in the afternoon . High near 46. North wind 3 to 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 29. Light northeast wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: A 50 percent chance of snow. Partly sunny, with a high near 45. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of snow, mainly after noon. Partly sunny, with a high near 48.

    High: 48 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 47. Light east southeast wind.
Wednesday
Showers and thunderstorms likely before 1pm, then showers and possibly a thunderstorm between 1pm and 3pm, then rain after 3pm. High near 62. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain before 3am, then rain, possibly mixed with snow. Low around 36. West southwest wind 3 to 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Rain and snow before noon, then snow between noon and 3pm, then rain, possibly mixed with snow after 3pm. Snow level 4000 feet lowering to 3200 feet in the afternoon . High near 46. North wind 3 to 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 29. Light northeast wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow. Partly sunny, with a high near 45. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 28.
Saturday
A chance of snow, mainly after noon. Partly sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
A chance of snow, mainly after noon. Partly sunny, with a high near 51.
Sunday Night
A slight chance of snow. Snow level 3900 feet lowering to 3200 feet after midnight . Mostly cloudy, with a low around 30.
Monday
A chance of rain. Snow level rising to 4600 feet in the afternoon. Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Swan Lake MT
 47.96°N 113.91°W (Elev. 3199 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