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

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Kilo - Harlowton (K1KM)

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

Mostly Cloudy

68°F

20°C

Humidity 52%
Wind Speed NW 4 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Aug 09:55 AM MDT
Extended Forecast for

Harlowton MT

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 81. West wind 8 to 14 mph becoming north northeast in the afternoon.

    High: 81 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Northeast wind 5 to 13 mph becoming west southwest in the evening. Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 85. West wind 14 to 17 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. West wind 6 to 14 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 90. Light west wind increasing to 6 to 11 mph in the afternoon.

    High: 90 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. North wind 5 to 15 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 86. Light and variable wind becoming east southeast 9 to 14 mph in the afternoon.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. East southeast wind 5 to 15 mph.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 87. South southeast wind 5 to 13 mph.

    High: 87 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 81. West wind 8 to 14 mph becoming north northeast in the afternoon.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Northeast wind 5 to 13 mph becoming west southwest in the evening. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 85. West wind 14 to 17 mph.
Wednesday Night
Mostly clear, with a low around 50. West wind 6 to 14 mph.
Thursday
Sunny and hot, with a high near 90. Light west wind increasing to 6 to 11 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 54. North wind 5 to 15 mph.
Friday
Sunny, with a high near 86. Light and variable wind becoming east southeast 9 to 14 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 57. East southeast wind 5 to 15 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 87. South southeast wind 5 to 13 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55. West wind 7 to 14 mph.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 85. West wind 9 to 14 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 52. North wind 6 to 14 mph.
Monday
Sunny, with a high near 85. West wind 6 to 9 mph becoming south southeast in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harlowton MT
 46.44°N 109.82°W (Elev. 4199 ft)
Last Update:
8:01 am MDT Aug 18, 2026
Forecast Valid:
10am MDT Aug 18, 2026-6pm MDT Aug 24, 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