Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

NA

N/A

Humidity NA
Wind Speed NW 5 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

13 Miles ENE Big Sky MT

  • Tonight

    Tonight: Areas of smoke. Clear, with a low around 37. North northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 37 °F

    Areas Smoke

  • Tuesday

    Tuesday: Areas of smoke. Sunny, with a high near 59. Calm wind becoming north northwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 59 °F

    Areas Smoke

  • Tuesday Night

    Tuesday Night: Patchy smoke. Mostly clear, with a low around 41. North northwest wind 5 to 7 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 41 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 68. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 68 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. West northwest wind 5 to 9 mph becoming light and variable.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72. South southwest wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77. South wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of smoke. Clear, with a low around 37. North northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Areas of smoke. Sunny, with a high near 59. Calm wind becoming north northwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Patchy smoke. Mostly clear, with a low around 41. North northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 68. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 47. West northwest wind 5 to 9 mph becoming light and variable.
Thursday
Sunny, with a high near 72. South southwest wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 53. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 77. South wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ENE Big Sky MT
 45.34°N 111.09°W (Elev. 8730 ft)
4:11 pm MDT Aug 3, 2026
5pm MDT Aug 3, 2026-6pm MDT Aug 10, 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