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

ROCKY BOY (RCBM8)

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

NA

32°F

0°C

Humidity 55%
Wind Speed W 9 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 08 Apr 11:18 AM MDT
Extended Forecast for

Big Sandy MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. Light and variable wind becoming east around 6 mph in the evening.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 53. North wind 3 to 5 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. Light and variable wind becoming east southeast 5 to 7 mph in the evening.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67. Southeast wind 6 to 10 mph.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. East southeast wind 6 to 9 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Partly sunny, with a high near 74. Calm wind becoming west around 6 mph in the afternoon.

    High: 74 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 42. East northeast wind around 6 mph becoming west southwest after midnight.

    Low: 42 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 49. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Tonight
Increasing clouds, with a low around 29. Light and variable wind becoming east around 6 mph in the evening.
Thursday
Mostly sunny, with a high near 53. North wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 31. Light and variable wind becoming east southeast 5 to 7 mph in the evening.
Friday
Sunny, with a high near 67. Southeast wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 40. East southeast wind 6 to 9 mph.
Saturday
A 20 percent chance of rain after noon. Partly sunny, with a high near 74. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 42. East northeast wind around 6 mph becoming west southwest after midnight.
Sunday
A chance of rain. Mostly cloudy, with a high near 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 31.
Monday
Rain and snow likely. Mostly cloudy, with a high near 46.
Monday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 27.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Sandy MT
 48.16°N 110.1°W (Elev. 2717 ft)
Last Update:
10:42 am MDT Apr 8, 2026
Forecast Valid:
12pm MDT Apr 8, 2026-6pm MDT Apr 14, 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