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

75°F

24°C

Humidity 15%
Wind Speed NW 19 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 20 Apr 02:55 PM MDT
Extended Forecast for

Harlowton MT

  • Tonight

    Tonight: Partly cloudy, with a low around 42. West wind 12 to 17 mph becoming northeast 6 to 11 mph in the evening.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. West wind 9 to 16 mph becoming southeast in the morning.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47. South wind 9 to 16 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 74. Southwest wind 11 to 21 mph increasing to 23 to 33 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 30%.

    High: 74 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 3am, then rain, possibly mixed with snow showers. Low around 35. West northwest wind 30 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 35 °F

    Showers
    Likely then
    Rain/Snow

  • Thursday

    Thursday: Rain and snow showers likely, becoming all snow after 9am. Mostly cloudy, with a high near 43. Northwest wind 38 to 41 mph, with gusts as high as 55 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 26. Northwest wind 22 to 32 mph, with gusts as high as 43 mph. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 50 percent chance of snow showers. Partly sunny, with a high near 41. North northwest wind 21 to 29 mph, with gusts as high as 38 mph.

    High: 41 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. North northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 42. West wind 12 to 17 mph becoming northeast 6 to 11 mph in the evening.
Tuesday
Mostly sunny, with a high near 80. West wind 9 to 16 mph becoming southeast in the morning.
Tuesday Night
Mostly cloudy, with a low around 47. South wind 9 to 16 mph.
Wednesday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 74. Southwest wind 11 to 21 mph increasing to 23 to 33 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 30%.
Wednesday Night
Rain showers before 3am, then rain, possibly mixed with snow showers. Low around 35. West northwest wind 30 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain and snow showers likely, becoming all snow after 9am. Mostly cloudy, with a high near 43. Northwest wind 38 to 41 mph, with gusts as high as 55 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 26. Northwest wind 22 to 32 mph, with gusts as high as 43 mph. New snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow showers. Partly sunny, with a high near 41. North northwest wind 21 to 29 mph, with gusts as high as 38 mph.
Friday Night
Mostly cloudy, with a low around 21. North northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight.
Saturday
A 20 percent chance of snow showers after noon. Partly sunny, with a high near 44. West northwest wind 10 to 16 mph.
Saturday Night
Partly cloudy, with a low around 22. North wind 6 to 16 mph becoming west northwest after midnight.
Sunday
Mostly sunny, with a high near 48. West northwest wind 6 to 13 mph becoming north in the afternoon.
Sunday Night
Partly cloudy, with a low around 26. North northeast wind 6 to 14 mph becoming northwest after midnight.
Monday
A slight chance of rain and snow showers. Mostly sunny, with a high near 54. West wind 6 to 13 mph. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harlowton MT
 46.44°N 109.82°W (Elev. 4199 ft)
Last Update:
1:18 pm MDT Apr 20, 2026
Forecast Valid:
3pm MDT Apr 20, 2026-6pm MDT Apr 27, 2026
 
Forecast Discussion
 
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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