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

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

63°F

17°C

Humidity 19%
Wind Speed SSE 7 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 02 May 07:00 PM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming north around 6 mph in the afternoon.

    High: 60 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: A chance of rain showers after noon, mixing with snow after 3pm. Mostly sunny, with a high near 49. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 49 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 28. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow showers. Mostly sunny, with a high near 44. Light north wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 44 °F

    Slight Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. North wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 28 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. Light west southwest wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 38. Calm wind.
Sunday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 38. Light and variable wind.
Monday
A chance of rain showers after noon, mixing with snow after 3pm. Mostly sunny, with a high near 49. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday Night
A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 28. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of snow showers. Mostly sunny, with a high near 44. Light north wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 28. North wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 28 mph.
Wednesday
Sunny, with a high near 56. Light west southwest wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 39.
Friday
A slight chance of rain. Mostly sunny, with a high near 63.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
Saturday
A chance of rain. Partly sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Big Sky MT
 45.24°N 111.22°W (Elev. 7129 ft)
Last Update:
3:57 pm MDT May 2, 2026
Forecast Valid:
7pm MDT May 2, 2026-6pm MDT May 9, 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