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

38°F

3°C

Humidity 84%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 13 Oct 08:39 PM MDT
Extended Forecast for

Roundup MT

  • Tonight

    Tonight: Patchy fog before 3am. Otherwise, partly cloudy, with a low around 25. Calm wind becoming southwest around 5 mph after midnight.

    Low: 25 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 58. Southwest wind 5 to 9 mph becoming light west in the afternoon.

    High: 58 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35. Calm wind becoming west northwest 5 to 9 mph in the evening.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 57. West wind 6 to 8 mph.

    High: 57 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Light and variable wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Southwest wind 7 to 16 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 40. Southwest wind around 11 mph.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 73. Southwest wind 11 to 15 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. West southwest wind 5 to 7 mph.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog before 3am. Otherwise, partly cloudy, with a low around 25. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 58. Southwest wind 5 to 9 mph becoming light west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 35. Calm wind becoming west northwest 5 to 9 mph in the evening.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 57. West wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 34. Light and variable wind.
Friday
Sunny, with a high near 68. Southwest wind 7 to 16 mph.
Friday Night
Clear, with a low around 40. Southwest wind around 11 mph.
Saturday
Sunny, with a high near 73. Southwest wind 11 to 15 mph.
Saturday Night
Partly cloudy, with a low around 40. West southwest wind 5 to 7 mph.
Sunday
Sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 38. Light and variable wind.
Monday
Mostly sunny, with a high near 70. Southwest wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 41. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 64. West northwest wind 7 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roundup MT
 46.43°N 108.56°W (Elev. 3320 ft)
Last Update:
5:13 pm MDT Oct 13, 2026
Forecast Valid:
9pm MDT Oct 13, 2026-6pm MDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation