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

Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

Ravalli County Airport (KHRF)

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

Overcast

45°F

7°C

Humidity 65%
Wind Speed S 9 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 15 Apr 04:35 AM MDT
Extended Forecast for

Hamilton MT

  • Overnight

    Overnight: Showers likely. Mostly cloudy, with a low around 37. South wind around 6 mph. Chance of precipitation is 70%.

    Low: 37 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 3pm. High near 53. South southeast wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 53 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain and snow showers before 1am, then a chance of snow showers after 2am. Low around 26. North northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Rain/Snow
    then Chance
    Snow Showers

  • Thursday

    Thursday: Snow showers likely, mainly after noon. Some thunder is also possible. Mostly cloudy, with a high near 41. Light and variable wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 25. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Little or no snow accumulation expected.

    Low: 25 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 40 percent chance of snow showers. Partly sunny, with a high near 46. Little or no snow accumulation expected.

    High: 46 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

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

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely. Mostly cloudy, with a low around 37. South wind around 6 mph. Chance of precipitation is 70%.
Wednesday
Showers, with thunderstorms also possible after 3pm. High near 53. South southeast wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain and snow showers before 1am, then a chance of snow showers after 2am. Low around 26. North northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers likely, mainly after noon. Some thunder is also possible. Mostly cloudy, with a high near 41. Light and variable wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 25. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Little or no snow accumulation expected.
Friday
A 40 percent chance of snow showers. Partly sunny, with a high near 46. Little or no snow accumulation expected.
Friday Night
Mostly clear, with a low around 23.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 69.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 40.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 71.
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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 15, 2026
Forecast Valid:
4am MDT Apr 15, 2026-6pm MDT Apr 21, 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