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

Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

JETTE (JETM8)

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

NA

69°F

21°C

Humidity 29%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 20 Apr 12:43 PM MDT
Extended Forecast for

Big Arm MT

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 72. Calm wind.

    High: 72 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, then showers and possibly a thunderstorm after noon. High near 63. Calm wind becoming southwest 5 to 9 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Chance Rain
    then Showers

  • Wednesday Night

    Wednesday Night: Rain. Low around 40. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain then
    Rain Likely

  • Thursday

    Thursday: Rain and snow before noon, then rain and snow showers likely between noon and 3pm, then rain showers likely after 3pm. Some thunder is also possible. High near 49. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 49 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain before midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of snow. Partly sunny, with a high near 49.

    High: 49 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 72. Calm wind.
Tonight
Partly cloudy, with a low around 48. Calm wind.
Tuesday
Sunny, with a high near 78. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 49. Calm wind.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 63. Calm wind becoming southwest 5 to 9 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 40. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain and snow before noon, then rain and snow showers likely between noon and 3pm, then rain showers likely after 3pm. Some thunder is also possible. High near 49. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
A chance of rain before midnight. Mostly cloudy, with a low around 33.
Friday
A slight chance of snow. Partly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Arm MT
 47.8°N 114.28°W (Elev. 3061 ft)
Last Update:
12:21 pm MDT Apr 20, 2026
Forecast Valid:
1pm MDT Apr 20, 2026-6pm MDT Apr 26, 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