Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

82°F

28°C

Humidity 32%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Heat Index81°F (27°C)
Last update 27 Aug 12:45 PM MDT
Extended Forecast for

Clinton MT

  • This Afternoon

    This Afternoon: A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 91. Calm wind becoming west around 6 mph. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy smoke before 1am. Mostly cloudy during the early evening, then becoming clear, with a low around 53. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 53 °F

    Patchy Smoke

  • Friday

    Friday: Partly sunny, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 85 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 5am.  Mostly cloudy, with a low around 53. Light and variable wind.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A chance of rain, then showers and possibly a thunderstorm after noon.  High near 78. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance Rain
    then Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 9pm, then rain after 9pm.  Low around 47. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of rain.  Partly sunny, with a high near 70. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 91. Calm wind becoming west around 6 mph. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Tonight
Patchy smoke before 1am. Mostly cloudy during the early evening, then becoming clear, with a low around 53. West northwest wind around 6 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night
A 30 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 53. Light and variable wind.
Saturday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 78. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 9pm, then rain after 9pm. Low around 47. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 70. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 84.
Tuesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 49.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Clinton MT
 46.77°N 113.73°W (Elev. 3766 ft)
12:22 pm MDT Aug 27, 2026
1pm MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database