National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Marginal Risks of Severe Storms on the Central Plains; Flash flooding on the Northern Plains; Frost & Freeze Warnings in portions of the West & Northeast

A storm system developing across the Plains may cause locally severe weather in western Kansas and southwestern Nebraska today, with isolated flash flooding possible in portions of eastern Montana and western North Dakota. Frost and Freeze Warnings are in effect for portions of the central Rockies and central Appalachians tonight into Friday morning. Read More >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

39°F

4°C

Humidity 94%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 16 Oct 08:18 AM MDT
Extended Forecast for

Big Sandy MT

  • Today

    Today: Patchy fog before noon. Otherwise, cloudy early, then gradual clearing, with a high near 55. West wind 3 to 6 mph.

    High: 55 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. Light south southwest wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 18 mph.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of rain after noon. Mostly sunny, with a high near 59. South southwest wind 10 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 59 °F

    Sunny then
    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 28. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 28 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 56. Southwest wind 6 to 9 mph.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. South wind 5 to 8 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Mostly cloudy, with a high near 66. South wind 8 to 13 mph, with gusts as high as 25 mph.

    High: 66 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain, mainly after midnight. Mostly cloudy, with a low around 34. West wind 10 to 15 mph, with gusts as high as 28 mph.

    Low: 34 °F

    Chance Rain

  • Monday

    Monday: A chance of rain, mainly before noon. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance Rain

Detailed Forecast

Today
Patchy fog before noon. Otherwise, cloudy early, then gradual clearing, with a high near 55. West wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 33. Light south southwest wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Friday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 59. South southwest wind 10 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Friday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 28. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 56. Southwest wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 37. South wind 5 to 8 mph.
Sunday
A 20 percent chance of rain before noon. Mostly cloudy, with a high near 66. South wind 8 to 13 mph, with gusts as high as 25 mph.
Sunday Night
A chance of rain, mainly after midnight. Mostly cloudy, with a low around 34. West wind 10 to 15 mph, with gusts as high as 28 mph.
Monday
A chance of rain, mainly before noon. Mostly cloudy, with a high near 51.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Sandy MT
 48.18°N 110.11°W (Elev. 2759 ft)
Last Update:
4:13 am MDT Oct 16, 2025
Forecast Valid:
9am MDT Oct 16, 2025-6pm MDT Oct 22, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation