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

HORSE THIEF (HORM8)

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

NA

51°F

11°C

Humidity 53%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 04 Nov 11:39 AM MST
Extended Forecast for

Roundup MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 54. South southwest wind around 5 mph becoming light and variable.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, partly cloudy, with a low around 30. Calm wind becoming southwest 5 to 7 mph after midnight.

    Low: 30 °F

    Patchy Fog

  • Thursday

    Thursday: Increasing clouds, with a high near 58. West southwest wind 6 to 13 mph.

    High: 58 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West southwest wind 5 to 7 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 55. West southwest wind 6 to 11 mph.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. Southwest wind 7 to 11 mph.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62. West southwest wind 6 to 10 mph.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. Southwest wind 5 to 9 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 64. Southwest wind 11 to 16 mph.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 54. South southwest wind around 5 mph becoming light and variable.
Tonight
Patchy fog after 8pm. Otherwise, partly cloudy, with a low around 30. Calm wind becoming southwest 5 to 7 mph after midnight.
Thursday
Increasing clouds, with a high near 58. West southwest wind 6 to 13 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West southwest wind 5 to 7 mph.
Friday
Sunny, with a high near 55. West southwest wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 37. Southwest wind 7 to 11 mph.
Saturday
Sunny, with a high near 62. West southwest wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 37. Southwest wind 5 to 9 mph.
Sunday
Mostly sunny, with a high near 64. Southwest wind 11 to 16 mph.
Sunday Night
Mostly cloudy, with a low around 37. Southwest wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 58. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. Calm wind becoming west southwest around 5 mph after midnight.
Tuesday
Mostly sunny, with a high near 61. West southwest wind 7 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Roundup MT
 46.45°N 108.53°W (Elev. 3219 ft)
Last Update:
11:37 am MST Nov 4, 2026
Forecast Valid:
12pm MST Nov 4, 2026-6pm MST Nov 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation