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.

NA

54°F

12°C

Humidity 31%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 17 Oct 10:45 AM MDT
Extended Forecast for

5 Miles NNE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 54. South southwest wind 15 to 17 mph, with gusts as high as 28 mph.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Southwest wind 5 to 8 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 51. South wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. South wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Mostly sunny, with a high near 49. South southeast wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 49 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain. Partly cloudy, with a low around 33. South southeast wind 3 to 5 mph.

    Low: 33 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 54. South southwest wind 15 to 17 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 32. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.
Sunday
Mostly sunny, with a high near 50. Southwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 32. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 51. South wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 34. South wind 8 to 14 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Mostly sunny, with a high near 49. South southeast wind 5 to 9 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 33. South southeast wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
A chance of rain. Partly sunny, with a high near 48.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Friday
Rain and snow. Mostly cloudy, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Big Sky MT
 45.32°N 111.27°W (Elev. 8399 ft)
Last Update:
10:21 am MDT Oct 17, 2026
Forecast Valid:
11am MDT Oct 17, 2026-6pm MDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation