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

67°F

19°C

Humidity 46%
Wind Speed SSW 3 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 04 Oct 11:39 AM MDT
Extended Forecast for

Roundup MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. South southeast wind around 7 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 48. Southeast wind 6 to 11 mph becoming west southwest in the evening.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Southwest wind 13 to 16 mph.

    High: 85 °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 77. West southwest wind 3 to 5 mph.

    High: 77 °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 76. Light and variable wind becoming north northeast around 6 mph in the morning.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. Northeast wind around 6 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 70 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. South southeast wind around 7 mph.
Tonight
Mostly clear, with a low around 48. Southeast wind 6 to 11 mph becoming west southwest in the evening.
Monday
Sunny, with a high near 85. Southwest wind 13 to 16 mph.
Monday Night
Mostly clear, with a low around 48. West wind around 6 mph becoming calm.
Tuesday
Sunny, with a high near 77. 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 76. Light and variable wind becoming north northeast around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 46. Northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 70. Light and variable wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. East northeast wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 75. South southwest wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 48. South wind 5 to 8 mph becoming west southwest after midnight.
Saturday
Partly sunny, with a high near 64. West wind 10 to 17 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roundup MT
 46.43°N 108.53°W (Elev. 3399 ft)
Last Update:
12:32 am MDT Oct 4, 2026
Forecast Valid:
12pm MDT Oct 4, 2026-6pm MDT Oct 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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