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

Kilo - Harlowton (K1KM)

Lat: 46.5°NLon: 109.8°WElev: 4452.0ft.

Clear

50°F

10°C

Humidity 63%
Wind Speed NW 6 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 03 Oct 06:55 AM MDT
Extended Forecast for

Harlowton MT

  • Today

    Today: Mostly sunny, with a high near 67. West northwest wind 6 to 11 mph becoming east in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 38. East wind 5 to 13 mph becoming northwest after midnight.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76. West northwest wind 5 to 9 mph becoming southeast in the afternoon.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. East southeast wind 5 to 9 mph becoming west after midnight.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. West wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. West wind 11 to 16 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. West wind 14 to 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. West wind 8 to 11 mph.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. West wind 10 to 17 mph.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 67. West northwest wind 6 to 11 mph becoming east in the afternoon.
Tonight
Partly cloudy, with a low around 38. East wind 5 to 13 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 76. West northwest wind 5 to 9 mph becoming southeast in the afternoon.
Sunday Night
Mostly clear, with a low around 43. East southeast wind 5 to 9 mph becoming west after midnight.
Monday
Sunny, with a high near 83. West wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon.
Monday Night
Mostly clear, with a low around 49. West wind 11 to 16 mph.
Tuesday
Sunny, with a high near 78. West wind 14 to 20 mph.
Tuesday Night
Mostly clear, with a low around 45. West wind 8 to 11 mph.
Wednesday
Sunny, with a high near 77. West wind 10 to 17 mph.
Wednesday Night
Mostly clear, with a low around 44. West wind 6 to 10 mph.
Thursday
Sunny, with a high near 75. Southwest wind 8 to 11 mph.
Thursday Night
Mostly clear, with a low around 44. West wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 77. West wind 10 to 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harlowton MT
 46.44°N 109.85°W (Elev. 4190 ft)
Last Update:
7:17 am MDT Oct 3, 2026
Forecast Valid:
7am MDT Oct 3, 2026-6pm MDT Oct 9, 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