Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

NA

43°F

6°C

Humidity 76%
Wind Speed ESE 2 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 21 Mar 03:15 AM MDT
Extended Forecast for

Clinton MT

  • Overnight

    Overnight: A 20 percent chance of rain after 4am.  Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Rain, mainly before 1pm.  High near 54. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. West wind 5 to 8 mph becoming calm  in the evening. Winds could gust as high as 26 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55. Calm wind becoming west around 6 mph in the afternoon.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. West wind around 5 mph becoming calm  in the evening.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after noon.  Mostly cloudy, with a high near 59.

    High: 59 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

Detailed Forecast

Overnight
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 45. Calm wind.
Saturday
Rain, mainly before 1pm. High near 54. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Mostly clear, with a low around 32. West wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 26 mph.
Sunday
Sunny, with a high near 55. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 31. West wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Rain likely, mainly after noon. Mostly cloudy, with a high near 59.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain. Partly sunny, with a high near 55.
Wednesday Night
A chance of rain and snow. Snow level 5500 feet lowering to 3800 feet after midnight . Mostly cloudy, with a low around 32.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Clinton MT
 46.77°N 113.73°W (Elev. 3766 ft)
2:01 am MDT Mar 21, 2026
3am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database