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

Hazardous Weather Conditions

Current conditions at

ROCKY BOY (RCBM8)

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

NA

74°F

23°C

Humidity 29%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 27 May 03:18 AM MDT
Extended Forecast for

Box Elder MT

Heat Advisory May 27, 03:31am until May 27, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 27, 03:31am until May 27, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • Overnight

    Low: 60 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 55. South southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. East wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 78. Light west northwest wind becoming north 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 78 °F

    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers before 4am. Mostly cloudy, with a low around 60. East wind 5 to 9 mph.
Wednesday
A slight chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 55. South southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 59. East wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 50%.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 78. Light west northwest wind becoming north 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 66.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 43.
Monday
A chance of rain. Partly sunny, with a high near 69.
Monday Night
A chance of rain. Partly cloudy, with a low around 43.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Box Elder MT
 48.31°N 110°W (Elev. 2690 ft)
Last Update:
12:31 am MDT May 27, 2026
Forecast Valid:
3am MDT May 27, 2026-6pm MDT Jun 2, 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