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 (ROCM8)

Lat: 48.17478°NLon: 109.64728°WElev: 4700.0ft.

NA

54°F

12°C

Humidity NA
Wind Speed NA NA MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

5 Miles SSE Rocky Boy MT

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Patchy smoke. Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm.  Patchy smoke before 9am, then patchy smoke after noon. Mostly sunny, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 73 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 7pm.  Patchy smoke. Partly cloudy, with a low around 48. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 48 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 76. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 76 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. North wind around 7 mph becoming east after midnight.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. East southeast wind 5 to 8 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Patchy smoke. Partly cloudy, with a low around 46. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Patchy smoke before 9am, then patchy smoke after noon. Mostly sunny, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 7pm. Patchy smoke. Partly cloudy, with a low around 48. Calm wind becoming south southeast around 5 mph after midnight.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 76. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 49. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 75. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 48. North wind around 7 mph becoming east after midnight.
Friday
Sunny, with a high near 76. East southeast wind 5 to 8 mph.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
A slight chance of showers. Partly sunny, with a high near 78.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Sunday
A slight chance of showers. Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Rocky Boy MT
 48.18°N 109.73°W (Elev. 5066 ft)
12:32 pm MDT Aug 17, 2026
10pm MDT Aug 17, 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