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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

JETTE (JETM8)

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

NA

57°F

14°C

Humidity 67%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 09 Aug 07:43 AM MDT
Extended Forecast for

Big Arm MT

  • Today

    Today: Mostly sunny, with a high near 76. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. North wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 76. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Calm wind becoming southeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 59. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 62.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Tuesday Night
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 71.
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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. 3060 ft)
Last Update:
3:30 am MDT Aug 9, 2025
Forecast Valid:
8am MDT Aug 9, 2025-6pm MDT Aug 15, 2025
 
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