Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Partly Cloudy

66°F

19°C

Humidity 68%
Wind Speed N 3 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Aug 11:50 PM MDT
Extended Forecast for

Hamilton MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 51. Light south southeast wind.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm.  Mostly sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Light and variable wind becoming south southwest around 6 mph after midnight.

    Low: 48 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 86. South wind around 5 mph becoming light and variable.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. West wind around 5 mph becoming light and variable.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of rain before midnight.  Mostly cloudy, with a low around 55.

    Low: 55 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 51. Light south southeast wind.
Tuesday
A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Light and variable wind becoming south southwest around 6 mph after midnight.
Wednesday
Sunny, with a high near 86. South wind around 5 mph becoming light and variable.
Wednesday Night
Mostly clear, with a low around 50. West wind around 5 mph becoming light and variable.
Thursday
Sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 90.
Friday Night
A slight chance of rain before midnight. Mostly cloudy, with a low around 55.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 86.
Saturday Night
A chance of rain. Partly cloudy, with a low around 49.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Hamilton MT
 46.26°N 114.15°W (Elev. 3599 ft)
2:01 pm MDT Aug 17, 2026
12am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database