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

54°F

12°C

Humidity 67%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 04 Oct 09:39 AM MDT
Extended Forecast for

Roundup MT

  • Today

    Today: Sunny, with a high near 77. Southwest wind around 7 mph becoming southeast in the afternoon.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Southeast wind 5 to 11 mph becoming west in the evening.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 86. Southwest wind 13 to 15 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. West wind around 6 mph becoming calm.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. West southwest wind 3 to 5 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. Northeast wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Light and variable wind becoming north northeast around 6 mph in the morning.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Northeast wind around 6 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 77. Southwest wind around 7 mph becoming southeast in the afternoon.
Tonight
Mostly clear, with a low around 47. Southeast wind 5 to 11 mph becoming west in the evening.
Monday
Sunny, with a high near 86. Southwest wind 13 to 15 mph.
Monday Night
Mostly clear, with a low around 48. West wind around 6 mph becoming calm.
Tuesday
Sunny, with a high near 78. West southwest wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 46. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 77. Light and variable wind becoming north northeast around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 45. Northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 44. East northeast wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 76. South southwest wind 6 to 13 mph.
Friday Night
Partly cloudy, with a low around 47. South wind 5 to 8 mph becoming west southwest after midnight.
Saturday
Partly sunny, with a high near 65. West northwest wind 10 to 17 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:
12:32 am MDT Oct 4, 2026
Forecast Valid:
10am MDT Oct 4, 2026-6pm MDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation