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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

62°F

17°C

Humidity 39%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 03 Oct 01:18 PM MDT
Extended Forecast for

Box Elder MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 66. Light north wind.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. East wind around 6 mph becoming calm after midnight.

    Low: 39 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 72. Light and variable wind.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. Light and variable wind becoming south southwest 5 to 8 mph in the evening.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 82. South southwest wind 8 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Light southwest wind.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 66. Light north wind.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. East wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 72. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 47. Light and variable wind becoming south southwest 5 to 8 mph in the evening.
Monday
Sunny, with a high near 82. South southwest wind 8 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Monday Night
Mostly clear, with a low around 47. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 73. Light southwest wind.
Tuesday Night
Partly cloudy, with a low around 43. Calm wind.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Box Elder MT
 48.33°N 110.01°W (Elev. 2661 ft)
Last Update:
12:31 pm MDT Oct 3, 2026
Forecast Valid:
1pm MDT Oct 3, 2026-6pm MDT Oct 9, 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