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

Big Timber Airport (K6S0)

Lat: 45.80647°NLon: 109.97826°WElev: 4494.0ft.

Overcast

55°F

13°C

Humidity 71%
Wind Speed WNW 5 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 03 Oct 10:15 PM MDT
Extended Forecast for

Harlowton MT

  • Tonight

    Tonight: A 40 percent chance of showers. Mostly cloudy, with a low around 45. North northwest wind 6 to 10 mph.

    Low: 45 °F

    Chance
    Showers

  • Saturday

    Saturday: Rain likely, mainly between 9am and 2pm. Cloudy, with a high near 56. North wind 7 to 10 mph. Chance of precipitation is 70%.

    High: 56 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 34. North northwest wind around 10 mph. Chance of precipitation is 80%.

    Low: 34 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before noon. Mostly cloudy, with a high near 47. North wind 11 to 15 mph. Chance of precipitation is 70%.

    High: 47 °F

    Rain Likely
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 24. North northeast wind 6 to 10 mph becoming west southwest after midnight. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 59. West southwest wind 7 to 10 mph.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29. West wind 6 to 8 mph.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64. West wind 5 to 9 mph becoming south southeast in the afternoon.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 33. South southeast wind 6 to 9 mph becoming west after midnight.

    Low: 33 °F

    Clear

Detailed Forecast

Tonight
A 40 percent chance of showers. Mostly cloudy, with a low around 45. North northwest wind 6 to 10 mph.
Saturday
Rain likely, mainly between 9am and 2pm. Cloudy, with a high near 56. North wind 7 to 10 mph. Chance of precipitation is 70%.
Saturday Night
Rain. Low around 34. North northwest wind around 10 mph. Chance of precipitation is 80%.
Sunday
Rain likely, mainly before noon. Mostly cloudy, with a high near 47. North wind 11 to 15 mph. Chance of precipitation is 70%.
Sunday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 24. North northeast wind 6 to 10 mph becoming west southwest after midnight. Chance of precipitation is 20%.
Monday
Sunny, with a high near 59. West southwest wind 7 to 10 mph.
Monday Night
Mostly clear, with a low around 29. West wind 6 to 8 mph.
Tuesday
Sunny, with a high near 64. West wind 5 to 9 mph becoming south southeast in the afternoon.
Tuesday Night
Clear, with a low around 33. South southeast wind 6 to 9 mph becoming west after midnight.
Wednesday
Sunny, with a high near 70. Southwest wind 11 to 14 mph.
Wednesday Night
Mostly clear, with a low around 37. West southwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 68. West wind 8 to 10 mph becoming east in the afternoon.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 35. East northeast wind 7 to 10 mph becoming west after midnight.
Friday
Sunny, with a high near 64. West wind 7 to 11 mph becoming southeast in the afternoon.
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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:
8:02 pm MDT Oct 3, 2025
Forecast Valid:
10pm MDT Oct 3, 2025-6pm MDT Oct 10, 2025
 
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