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

63°F

17°C

Humidity 63%
Wind Speed SW 10 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 08 Aug 02:18 PM MDT
Extended Forecast for

Big Sandy MT

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 71. West wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a chance of showers. Mostly cloudy, with a low around 55. West wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after noon. Widespread haze after 8am. Partly sunny, with a high near 76. West northwest wind 14 to 16 mph, with gusts as high as 29 mph.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Widespread haze before 7pm. Partly cloudy, with a low around 54. North northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 54 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88. Light and variable wind becoming west southwest around 6 mph in the morning.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. North northwest wind around 6 mph becoming southeast after midnight.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 71. West wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely before midnight, then a chance of showers. Mostly cloudy, with a low around 55. West wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers, mainly after noon. Widespread haze after 8am. Partly sunny, with a high near 76. West northwest wind 14 to 16 mph, with gusts as high as 29 mph.
Saturday Night
A 20 percent chance of showers before midnight. Widespread haze before 7pm. Partly cloudy, with a low around 54. North northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Sunday
Sunny, with a high near 83. Light and variable wind becoming west 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 57. West northwest wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 88. Light and variable wind becoming west southwest around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 58. North northwest wind around 6 mph becoming southeast after midnight.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Sandy MT
 48.18°N 110.11°W (Elev. 2759 ft)
Last Update:
10:11 am MDT Aug 8, 2025
Forecast Valid:
2pm MDT Aug 8, 2025-6pm MDT Aug 14, 2025
 
Forecast Discussion
 
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Additional Resources

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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