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 37%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 01 May 09:39 PM MDT
Extended Forecast for

Roundup MT

  • Tonight

    Tonight: Mostly clear, with a low around 41. South southeast wind 5 to 7 mph becoming west southwest after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Southwest wind 7 to 13 mph becoming north northeast in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 44. North northeast wind 6 to 11 mph becoming light east northeast in the evening.

    Low: 44 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 74. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 43. West northwest wind around 7 mph.

    Low: 43 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 62. North wind 9 to 17 mph.

    High: 62 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 35. North wind 5 to 15 mph.

    Low: 35 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 57. North wind 5 to 13 mph.

    High: 57 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32. North wind 6 to 11 mph becoming light and variable after midnight.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 41. South southeast wind 5 to 7 mph becoming west southwest after midnight.
Saturday
Mostly sunny, with a high near 72. Southwest wind 7 to 13 mph becoming north northeast in the afternoon.
Saturday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 44. North northeast wind 6 to 11 mph becoming light east northeast in the evening.
Sunday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 74. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Sunday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 43. West northwest wind around 7 mph.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 62. North wind 9 to 17 mph.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 35. North wind 5 to 15 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 57. North wind 5 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 32. North wind 6 to 11 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 66. Light and variable wind becoming north northwest 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 40. North wind 5 to 8 mph becoming light and variable.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 75. West wind 6 to 11 mph becoming north northwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 45. North wind 5 to 9 mph becoming west after midnight.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 74. North wind 6 to 11 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:
7:09 pm MDT May 1, 2026
Forecast Valid:
9pm MDT May 1, 2026-6pm MDT May 8, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation