Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

NA

65°F

18°C

Humidity 25%
Wind Speed SSE 8 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 08 Sep 03:15 PM MDT
Extended Forecast for

4 Miles E Big Sky MT

Fire Weather Watch September 10, 12:00pm until September 10, 08:00pm
Click here for hazard details and duration
Fire Weather Watch
  • Tonight

    Tonight: Mostly clear, with a low around 37. West wind 5 to 8 mph becoming calm  in the evening. Winds could gust as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. West wind around 6 mph becoming south after midnight. Winds could gust as high as 18 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Southwest wind 5 to 9 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. South southwest wind 6 to 9 mph, with gusts as high as 23 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 71. West wind 5 to 8 mph, with gusts as high as 21 mph.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 37. West wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 41. West wind around 6 mph becoming south after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 80. Southwest wind 5 to 9 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 45. South southwest wind 6 to 9 mph, with gusts as high as 23 mph.
Friday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 71. West wind 5 to 8 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 69. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 37.
Sunday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 57.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
2:11 pm MDT Sep 8, 2026
3pm MDT Sep 8, 2026-6pm MDT Sep 15, 2026
 
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