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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

30°F

-1°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Mar 07:35 AM MDT
Extended Forecast for

Hamilton MT

Dense Fog Advisory until March 18, 11:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until March 18, 11:00am

    NOW until 11:00am Wed

    Dense Fog Advisory

  • Today

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South wind around 7 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68. South wind 6 to 10 mph, with gusts as high as 26 mph.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 69. South wind 6 to 13 mph, with gusts as high as 30 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Saturday

    Saturday: A 50 percent chance of rain. Partly sunny, with a high near 55.

    High: 55 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 63. South southeast wind 8 to 11 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 40. South wind around 7 mph.
Thursday
Sunny, with a high near 68. South wind 6 to 10 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 69. South wind 6 to 13 mph, with gusts as high as 30 mph.
Friday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 43.
Saturday
A 50 percent chance of rain. Partly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 31.
Monday
Partly sunny, with a high near 58.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
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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 am MDT Mar 18, 2026
Forecast Valid:
7am MDT Mar 18, 2026-6pm MDT Mar 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