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

ROCKY BOY (RCBM8)

Lat: 48.25529°NLon: 109.78592°WElev: 3789.0ft.

NA

55°F

13°C

Humidity 70%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 27 Aug 07:18 AM MDT
Extended Forecast for

Box Elder MT

  • Today

    Today: Increasing clouds, with a high near 95. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 95 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm.  Cloudy during the early evening, then gradual clearing, with a low around 59. South southwest wind 5 to 9 mph.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 87. West southwest wind 5 to 7 mph.

    High: 87 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. South wind around 5 mph becoming calm  after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after noon.  Partly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 52. Southwest wind around 6 mph becoming light and variable  after midnight.  Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before noon.  Partly sunny, with a high near 72. West wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph.  Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before midnight.  Partly cloudy, with a low around 47. West southwest wind 6 to 15 mph, with gusts as high as 28 mph.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A slight chance of showers before noon.  Sunny, with a high near 77.

    High: 77 °F

    Slight Chance
    Showers then
    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 95. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 59. South southwest wind 5 to 9 mph.
Friday
Partly sunny, with a high near 87. West southwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 57. South wind around 5 mph becoming calm after midnight.
Saturday
A 30 percent chance of showers after noon. Partly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Southwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%.
Sunday
Showers likely, mainly before noon. Partly sunny, with a high near 72. West wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers before midnight. Partly cloudy, with a low around 47. West southwest wind 6 to 15 mph, with gusts as high as 28 mph.
Monday
A slight chance of showers before noon. Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 82.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Box Elder MT
 48.33°N 110.01°W (Elev. 2661 ft)
7:47 am MDT Aug 27, 2026
7am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

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