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

65°F

18°C

Humidity 53%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 21 Jun 12:18 AM MDT
Extended Forecast for

3 Miles SSE Rocky Boy MT

  • Overnight

    Overnight: A slight chance of showers before 2am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 48. South southwest wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 67. West northwest wind around 9 mph, with gusts as high as 18 mph.

    High: 67 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming east in the evening.

    Low: 43 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers after 5pm. Partly sunny, with a high near 61. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 61 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. West northwest wind 5 to 15 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65. West wind 3 to 8 mph.

    High: 65 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44. North wind 5 to 7 mph becoming light and variable.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. East southeast wind 3 to 5 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers before 2am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 48. South southwest wind 5 to 9 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 67. West northwest wind around 9 mph, with gusts as high as 18 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming east in the evening.
Monday
A 30 percent chance of showers after 5pm. Partly sunny, with a high near 61. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 41. West northwest wind 5 to 15 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 65. West wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 44. North wind 5 to 7 mph becoming light and variable.
Wednesday
Mostly sunny, with a high near 72. East southeast wind 3 to 5 mph.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rocky Boy MT
 48.22°N 109.77°W (Elev. 4856 ft)
Last Update:
12:32 am MDT Jun 21, 2026
Forecast Valid:
1am MDT Jun 21, 2026-6pm MDT Jun 27, 2026
 
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