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

Critical Fire Weather in the Plains; Unseasonably Warm in the Southwest and Southern U.S.

Unseasonably warm temperatures continue through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the Plains and Southeast U.S. this weekend. Read More >

Current conditions at

JETTE (JETM8)

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

NA

40°F

4°C

Humidity 41%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 28 Mar 01:43 AM MDT
Extended Forecast for

Big Arm MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 58. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 58 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40. West southwest wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of rain after noon. Mostly cloudy, with a high near 53. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain before 3am, then rain and snow likely. Low around 36. South southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain then
    Rain/Snow
    Likely

  • Monday

    Monday: A 40 percent chance of snow, mainly before noon. Partly sunny, with a high near 45. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. Calm wind.
Saturday
Mostly cloudy, with a high near 58. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 40. West southwest wind around 6 mph becoming calm in the evening.
Sunday
A 50 percent chance of rain after noon. Mostly cloudy, with a high near 53. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain before 3am, then rain and snow likely. Low around 36. South southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
A 40 percent chance of snow, mainly before noon. Partly sunny, with a high near 45. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A slight chance of rain and snow before noon, then a chance of rain. Mostly cloudy, with a high near 54.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 38.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 48.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Arm MT
 47.8°N 114.28°W (Elev. 3061 ft)
Last Update:
12:22 am MDT Mar 28, 2026
Forecast Valid:
2am MDT Mar 28, 2026-6pm MDT Apr 3, 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