Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

38°F

3°C

Humidity 83%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 03 Aug 11:18 PM MDT
Extended Forecast for

Big Sandy MT

  • Tonight

    Tonight: Clear, with a low around 41. South wind 3 to 5 mph.

    Low: 41 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, then becoming mostly cloudy toward daybreak, with a low around 49. West northwest wind around 6 mph becoming light and variable  after midnight.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. Light and variable wind becoming west southwest around 6 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. Northwest wind 5 to 7 mph becoming light and variable  in the evening.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. West northwest wind around 6 mph becoming light and variable.

    Low: 55 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 41. South wind 3 to 5 mph.
Tuesday
Sunny, with a high near 77. Light and variable wind becoming west around 6 mph in the afternoon.
Tuesday Night
Clear, then becoming mostly cloudy toward daybreak, with a low around 49. West northwest wind around 6 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 86. Light and variable wind becoming west southwest around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 53. Northwest wind 5 to 7 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 94. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 55. West northwest wind around 6 mph becoming light and variable.
Friday
Sunny and hot, with a high near 98. Light and variable wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Sandy MT
 48.18°N 110.11°W (Elev. 2759 ft)
10:41 pm MDT Aug 3, 2026
11pm MDT Aug 3, 2026-6pm MDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database