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

Atmospheric River in the West; Strong Winds in the Northeast

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Current conditions at

HORSE THIEF (HORM8)

Lat: 46.42581°NLon: 108.6745°WElev: 3414.0ft.

NA

47°F

8°C

Humidity 72%
Wind Speed SSW 3 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 05 Nov 12:39 PM MST
Extended Forecast for

Roundup MT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 58. South wind around 5 mph becoming light and variable.

    High: 58 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Light south southwest wind becoming west southwest 5 to 10 mph in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 60. West wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon.

    High: 60 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. West southwest wind 7 to 15 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers. Partly sunny, with a high near 57. West southwest wind 6 to 15 mph.

    High: 57 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. West wind around 15 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. North northwest wind 7 to 10 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. North northeast wind around 5 mph becoming calm in the evening.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 52 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 58. South wind around 5 mph becoming light and variable.
Tonight
Mostly cloudy, with a low around 38. Light south southwest wind becoming west southwest 5 to 10 mph in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 60. West wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 33. West southwest wind 7 to 15 mph.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 57. West southwest wind 6 to 15 mph.
Friday Night
Partly cloudy, with a low around 30. West wind around 15 mph.
Saturday
Mostly sunny, with a high near 48. North northwest wind 7 to 10 mph.
Saturday Night
Partly cloudy, with a low around 22. North northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 52. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 32. Southwest wind 6 to 9 mph.
Monday
Partly sunny, with a high near 65. Southwest wind 10 to 14 mph.
Monday Night
Mostly cloudy, with a low around 40. West southwest wind around 10 mph.
Veterans Day
Mostly sunny, with a high near 65. West southwest wind 7 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roundup MT
 46.45°N 108.53°W (Elev. 3219 ft)
Last Update:
12:58 pm MST Nov 5, 2025
Forecast Valid:
1pm MST Nov 5, 2025-6pm MST Nov 11, 2025
 
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Additional Resources

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Chance of Precipitation