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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

72°F

22°C

Humidity 24%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 17 Jun 03:55 PM MDT
Extended Forecast for

Hamilton MT

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind 8 to 13 mph becoming light and variable. Winds could gust as high as 26 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. North northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 49 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. North northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 46. Northwest wind 8 to 13 mph becoming light and variable. Winds could gust as high as 26 mph.
Thursday
Sunny, with a high near 81. Light and variable wind becoming north northwest 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 49. North northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Juneteenth
Mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 55. North northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Partly sunny, with a high near 82.
Saturday Night
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.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hamilton MT
 46.24°N 114.14°W (Elev. 3678 ft)
Last Update:
2:01 pm MDT Jun 17, 2026
Forecast Valid:
4pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation