Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

31°F

-1°C

Humidity 79%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 19 Mar 05:45 AM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 61. South wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. South southwest wind 5 to 8 mph, with gusts as high as 18 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 63. Southwest wind 5 to 13 mph, with gusts as high as 25 mph.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. South southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after noon.  Partly sunny, with a high near 60. South southwest wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 60 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain, mixing with snow after 9pm, then gradually ending.  Partly cloudy, with a low around 28. West wind 5 to 7 mph becoming calm  in the evening. Winds could gust as high as 18 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 28 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 50. Calm wind becoming west around 6 mph in the afternoon.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 61. South wind 7 to 16 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 42. South southwest wind 5 to 8 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 63. Southwest wind 5 to 13 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 45. South southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Saturday
A 30 percent chance of rain after noon. Partly sunny, with a high near 60. South southwest wind 6 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A chance of rain, mixing with snow after 9pm, then gradually ending. Partly cloudy, with a low around 28. West wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Sunny, with a high near 50. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 32. West southwest wind around 6 mph becoming calm in the evening.
Monday
Mostly cloudy, with a high near 50.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 57.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 42.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Big Sky MT
 45.24°N 111.22°W (Elev. 7129 ft)
4:47 am MDT Mar 19, 2026
6am MDT Mar 19, 2026-6pm MDT Mar 25, 2026
 
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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