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

70°F

21°C

Humidity 21%
Wind Speed W 7 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 20 Apr 02:18 PM MDT
Extended Forecast for

4 Miles ESE Big Sandy MT

  • Tonight

    Tonight: Partly cloudy, with a low around 45. West southwest wind 5 to 7 mph becoming south southeast in the evening.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. South wind around 6 mph becoming calm.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. East wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 78. Southeast wind 6 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 78 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain before 3am, then rain and snow. Some thunder is also possible. Low around 34. Breezy, with a north northwest wind 16 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 34 °F

    Showers then
    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Rain and snow likely before 9am, then snow likely between 9am and 3pm, then a chance of rain and snow after 3pm. Mostly cloudy, with a high near 43. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 27. North northwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 41. Northwest wind 15 to 17 mph, with gusts as high as 29 mph.

    High: 41 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. West southwest wind 5 to 7 mph becoming south southeast in the evening.
Tuesday
Mostly sunny, with a high near 81. South wind around 6 mph becoming calm.
Tuesday Night
Mostly cloudy, with a low around 52. East wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 78. Southeast wind 6 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
Rain before 3am, then rain and snow. Some thunder is also possible. Low around 34. Breezy, with a north northwest wind 16 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain and snow likely before 9am, then snow likely between 9am and 3pm, then a chance of rain and snow after 3pm. Mostly cloudy, with a high near 43. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 27. North northwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
A chance of snow. Mostly cloudy, with a high near 41. Northwest wind 15 to 17 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
A slight chance of snow before noon. Partly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Big Sandy MT
 48.16°N 110.04°W (Elev. 2825 ft)
Last Update:
12:31 pm MDT Apr 20, 2026
Forecast Valid:
3pm MDT Apr 20, 2026-6pm MDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation