Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

49°F

9°C

Humidity 93%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 18 Aug 12:18 AM MDT
Extended Forecast for

5 Miles NE Rocky Boy MT

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 3am.  Patchy smoke. Partly cloudy, with a steady temperature around 56. Calm wind.

    Low: 56 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm.  Patchy smoke before 10am, then patchy smoke after 3pm. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 76 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 8pm.  Patchy smoke. Partly cloudy, with a low around 54. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 54 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 79. Southwest wind 6 to 9 mph.

    High: 79 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. North wind 5 to 7 mph becoming east southeast after midnight.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. East wind 3 to 8 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 3am. Patchy smoke. Partly cloudy, with a steady temperature around 56. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Patchy smoke before 10am, then patchy smoke after 3pm. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Patchy smoke. Partly cloudy, with a low around 54. Calm wind becoming south southwest around 5 mph after midnight.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 79. Southwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 55. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 54. North wind 5 to 7 mph becoming east southeast after midnight.
Friday
Sunny, with a high near 79. East wind 3 to 8 mph.
Friday Night
Mostly cloudy, with a low around 58.
Saturday
A slight chance of showers. Partly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Rocky Boy MT
 48.31°N 109.72°W (Elev. 4199 ft)
12:32 pm MDT Aug 17, 2026
12am MDT Aug 18, 2026-6pm MDT Aug 24, 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