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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

50°F

10°C

Humidity 25%
Wind Speed S 13 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 18 Apr 11:55 AM MDT
Extended Forecast for

Hamilton MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 59. South wind around 6 mph becoming west northwest.

    High: 59 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69. Light south wind.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39. Light and variable wind.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain after midnight. Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 61.

    High: 61 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 59. South wind around 6 mph becoming west northwest.
Tonight
Partly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 69. Light south wind.
Sunday Night
Mostly cloudy, with a low around 39. Light and variable wind.
Monday
Mostly sunny, with a high near 76. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
A slight chance of rain after midnight. Partly cloudy, with a low around 44.
Wednesday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 61.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Mostly cloudy, with a high near 52.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hamilton MT
 46.26°N 114.15°W (Elev. 3599 ft)
Last Update:
2:01 am MDT Apr 18, 2026
Forecast Valid:
12pm MDT Apr 18, 2026-6pm MDT Apr 24, 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