Current conditions at

ROCKY BOY (RCBM8)

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

NA

43°F

6°C

Humidity 40%
Wind Speed NNW 6 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 08 Apr 03:18 PM MDT
Extended Forecast for

Big Sandy MT

  • Tonight

    Tonight: Increasing clouds, with a low around 28. Light and variable wind becoming east around 6 mph in the evening.

    Low: 28 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 54. North wind 3 to 5 mph.

    High: 54 °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 11 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. East southeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Partly Cloudy

  • Saturday

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

    High: 74 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight.  Mostly cloudy, with a low around 43. North wind around 7 mph becoming west after midnight.  Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of rain.  Mostly cloudy, with a high near 60. West wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 60 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely.  Mostly cloudy, with a low around 33.

    Low: 33 °F

    Rain Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 28. Light and variable wind becoming east around 6 mph in the evening.
Thursday
Mostly sunny, with a high near 54. 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 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 41. East southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 43. North wind around 7 mph becoming west after midnight. Chance of precipitation is 60%.
Sunday
A chance of rain. Mostly cloudy, with a high near 60. West wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Rain likely. Mostly cloudy, with a low around 33.
Monday
Rain likely, mainly before noon. Mostly cloudy, with a high near 44.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Sandy MT
 48.16°N 110.1°W (Elev. 2717 ft)
12:31 pm MDT Apr 8, 2026
3pm MDT Apr 8, 2026-6pm MDT Apr 15, 2026
 
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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