Lala Impacting Hawaii; Flash Flooding Risks; Excessive Heat

Lala will continue to impact Hawaii through the weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Thunderstorms, heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians and the mid-Atlantic through today. Record heat continues for areas of the Mississippi Valley into the Southeast. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

69°F

21°C

Humidity 58%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 16 Aug 10:18 AM MDT
Extended Forecast for

4 Miles SW Rocky Boy MT

  • Today

    Today: A 20 percent chance of showers before noon.  Patchy smoke after 3pm. Mostly sunny, with a high near 77. West southwest wind 7 to 10 mph.

    High: 77 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers after midnight.  Patchy smoke before 9pm. Mostly cloudy, with a low around 51. West wind 5 to 10 mph becoming light and variable  after midnight.  Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers between noon and 3pm.  Partly sunny, with a high near 77. Light and variable wind becoming west 5 to 8 mph in the morning.  Chance of precipitation is 20%.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. North northwest wind 5 to 7 mph becoming southeast after midnight.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Southeast wind around 5 mph becoming calm.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. West wind around 5 mph becoming light and variable.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 80. South wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers before noon. Patchy smoke after 3pm. Mostly sunny, with a high near 77. West southwest wind 7 to 10 mph.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers after midnight. Patchy smoke before 9pm. Mostly cloudy, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Monday
A slight chance of showers between noon and 3pm. Partly sunny, with a high near 77. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 51. North northwest wind 5 to 7 mph becoming southeast after midnight.
Tuesday
Mostly sunny, with a high near 79. Southeast wind around 5 mph becoming calm.
Tuesday Night
Partly cloudy, with a low around 53. West wind around 5 mph becoming light and variable.
Wednesday
Sunny, with a high near 80. South wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 57.
Saturday
A slight chance of showers. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Rocky Boy MT
 48.22°N 109.83°W (Elev. 4321 ft)
10:21 am MDT Aug 16, 2026
11am MDT Aug 16, 2026-6pm MDT Aug 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database