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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Ravalli County Airport (KHRF)

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

Mostly Cloudy

50°F

10°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 29 Aug 01:55 AM MDT
Extended Forecast for

Hamilton MT

  • Overnight

    Overnight: A 30 percent chance of rain, mainly before 5am. Patchy smoke. Mostly cloudy, with a low around 50. Light south southeast wind.

    Low: 50 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers likely and possibly a thunderstorm after 1pm. Patchy smoke before 7am. Mostly cloudy, with a high near 78. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then rain likely after midnight. Patchy smoke between 8pm and 9pm. Mostly cloudy, with a low around 41. West northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Chance
    Showers then
    Rain Likely

  • Sunday

    Sunday: A 20 percent chance of rain before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 68. Light south southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 68 °F

    Slight Chance
    Rain then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. West wind 5 to 8 mph becoming light and variable. Winds could gust as high as 21 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly before 5am. Patchy smoke. Mostly cloudy, with a low around 50. Light south southeast wind.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers likely and possibly a thunderstorm after 1pm. Patchy smoke before 7am. Mostly cloudy, with a high near 78. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms, then rain likely after midnight. Patchy smoke between 8pm and 9pm. Mostly cloudy, with a low around 41. West northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of rain before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 68. Light south southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 37. West wind 5 to 8 mph becoming light and variable. Winds could gust as high as 21 mph.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 45.
Tuesday
A chance of rain after noon. Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 76.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 43.
Thursday
A chance of rain. Partly sunny, with a high near 73.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hamilton MT
 46.24°N 114.14°W (Elev. 3678 ft)
Last Update:
12:22 am MDT Aug 29, 2026
Forecast Valid:
2am MDT Aug 29, 2026-6pm MDT Sep 4, 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