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.

Partly Cloudy

52°F

11°C

Humidity 68%
Wind Speed NNW 9 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 17 Sep 09:55 AM MDT
Extended Forecast for

Harlowton MT

  • Today

    Today: Partly sunny, with a high near 73. Light and variable wind becoming southeast 6 to 11 mph in the afternoon.

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 49. Southeast wind 6 to 11 mph becoming west northwest in the evening.

    Low: 49 °F

    Decreasing
    Clouds

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 77. West wind 8 to 13 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.

    High: 77 °F

    Partly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Patchy fog after 3am. Low around 49. North wind 7 to 14 mph. Chance of precipitation is 100%.

    Low: 49 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 9am. High near 64. Northwest wind around 10 mph. Chance of precipitation is 90%.

    High: 64 °F

    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 45. West wind 7 to 9 mph.

    Low: 45 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 72. West northwest wind 5 to 9 mph becoming light and variable.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. East wind 5 to 8 mph becoming light and variable.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77. South southwest wind 5 to 8 mph.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 73. Light and variable wind becoming southeast 6 to 11 mph in the afternoon.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 49. Southeast wind 6 to 11 mph becoming west northwest in the evening.
Friday
Showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 77. West wind 8 to 13 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.
Friday Night
Showers and possibly a thunderstorm. Patchy fog after 3am. Low around 49. North wind 7 to 14 mph. Chance of precipitation is 100%.
Saturday
Showers, with thunderstorms also possible after 9am. High near 64. Northwest wind around 10 mph. Chance of precipitation is 90%.
Saturday Night
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 45. West wind 7 to 9 mph.
Sunday
Mostly sunny, with a high near 72. West northwest wind 5 to 9 mph becoming light and variable.
Sunday Night
Mostly clear, with a low around 45. East wind 5 to 8 mph becoming light and variable.
Monday
Sunny, with a high near 77. South southwest wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 46. South wind 5 to 10 mph becoming light and variable.
Tuesday
Sunny, with a high near 78. West wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 46. West southwest wind 5 to 9 mph becoming light west northwest.
Wednesday
Sunny, with a high near 79. West northwest wind 5 to 8 mph becoming east in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harlowton MT
 46.44°N 109.85°W (Elev. 4190 ft)
Last Update:
9:32 am MDT Sep 17, 2026
Forecast Valid:
10am MDT Sep 17, 2026-6pm MDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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