Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

JETTE (JETM8)

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

NA

70°F

21°C

Humidity 61%
Wind Speed SSW 1 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 18 Aug 10:43 AM MDT
Extended Forecast for

Big Arm MT

  • Today

    Today: A 20 percent chance of rain after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 82. Light and variable wind becoming west 5 to 9 mph in the afternoon.

    High: 82 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly clear, with a low around 58. West wind 5 to 9 mph becoming calm  in the evening.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South southwest wind around 6 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of rain after midnight.  Mostly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A slight chance of rain before noon, then a slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 80.

    High: 80 °F

    Slight Chance
    Rain then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of rain after noon. Cloudy, then gradually becoming mostly sunny, with a high near 82. Light and variable wind becoming west 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 58. West wind 5 to 9 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 59. South southwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. Light and variable wind.
Thursday Night
Mostly clear, with a low around 60.
Friday
Mostly sunny, with a high near 85.
Friday Night
A slight chance of rain after midnight. Mostly cloudy, with a low around 62.
Saturday
A slight chance of rain before noon, then a slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Saturday Night
A slight chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Partly cloudy, with a low around 58.
Sunday
A slight chance of rain. Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 57.
Monday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Arm MT
 47.8°N 114.28°W (Elev. 3061 ft)
2:01 am MDT Aug 18, 2026
11am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

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