Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

51°F

11°C

Humidity 82%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 18 Aug 05:18 AM MDT
Extended Forecast for

4 Miles NW Rocky Boy MT

  • Today

    Today: A slight chance of showers between 2pm and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Patchy smoke between noon and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 81. Light and variable wind becoming southwest 5 to 9 mph in the morning.  Chance of precipitation is 20%.

    High: 81 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm.  Patchy smoke before 3am. Partly cloudy, with a low around 58. West wind 6 to 9 mph becoming south in the evening.

    Low: 58 °F

    Slight Chance
    Showers then
    Patchy Smoke

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. South wind 6 to 9 mph becoming west northwest in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind 5 to 8 mph becoming east after midnight.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Calm wind becoming east southeast 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. East wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

Detailed Forecast

Today
A slight chance of showers between 2pm and 3pm, then a slight chance of showers and thunderstorms after 3pm. Patchy smoke between noon and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 81. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers before 8pm. Patchy smoke before 3am. Partly cloudy, with a low around 58. West wind 6 to 9 mph becoming south in the evening.
Wednesday
Mostly sunny, with a high near 83. South wind 6 to 9 mph becoming west northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. North wind 5 to 8 mph becoming east after midnight.
Friday
Sunny, with a high near 86. Calm wind becoming east southeast 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62. East wind 9 to 14 mph, with gusts as high as 24 mph.
Saturday
Partly sunny, with a high near 87.
Saturday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 59.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Rocky Boy MT
 48.3°N 109.88°W (Elev. 3202 ft)
3:21 am MDT Aug 18, 2026
5am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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