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

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

41°F

5°C

Humidity 70%
Wind Speed S 11 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 13 Apr 04:35 AM MDT
Extended Forecast for

Hamilton MT

  • Overnight

    Overnight: A 30 percent chance of showers. Mostly cloudy, with a low around 38. South wind around 6 mph.

    Low: 38 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 52. South wind 6 to 8 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    High: 52 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 34. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 34 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 37. South southwest wind 6 to 10 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 53. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers likely after midnight. Low around 29. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. Mostly cloudy, with a high near 41.

    High: 41 °F

    Snow Showers

  • Thursday Night

    Thursday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 38. South wind around 6 mph.
Monday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 52. South wind 6 to 8 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Monday Night
A 40 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 34. West southwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 54. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 37. South southwest wind 6 to 10 mph, with gusts as high as 24 mph.
Wednesday
Showers. High near 53. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers likely after midnight. Low around 29. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers. Some thunder is also possible. Mostly cloudy, with a high near 41.
Thursday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A slight chance of rain. Mostly sunny, with a high near 63.
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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 Apr 13, 2026
Forecast Valid:
4am MDT Apr 13, 2026-6pm MDT Apr 19, 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