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

51°F

11°C

Humidity 91%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 17 Aug 11:18 PM MDT
Extended Forecast for

6 Miles W Rocky Boy MT

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Patchy smoke. Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 3pm.  Patchy smoke before 11am, then patchy smoke after 2pm. Mostly sunny, with a high near 80. Calm wind becoming west around 6 mph in the afternoon.

    High: 80 °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 57. Light and variable wind becoming south southeast around 6 mph after midnight.

    Low: 57 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 83. South wind 5 to 8 mph becoming west in the afternoon.

    High: 83 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

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

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind 5 to 7 mph becoming east after midnight.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 1am. Patchy smoke. Partly cloudy, with a low around 55. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 3pm. Patchy smoke before 11am, then patchy smoke after 2pm. Mostly sunny, with a high near 80. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Patchy smoke. Partly cloudy, with a low around 57. Light and variable wind becoming south southeast around 6 mph after midnight.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 83. South wind 5 to 8 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. West northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 83. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. North wind 5 to 7 mph becoming east after midnight.
Friday
Sunny, with a high near 83. Calm wind becoming east southeast around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62.
Saturday
A slight chance of showers before noon. Partly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Sunday
A slight chance of showers. Mostly sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 57.
Monday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles W Rocky Boy MT
 48.23°N 109.93°W (Elev. 3182 ft)
12:32 pm MDT Aug 17, 2026
11pm 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