Coastal Threats for the East and Gulf; Record Warmth for the Central U.S.

Persistent onshore flow across the Southeast and portions of the mid-Atlantic will keep the risk of rip currents through the weekend. Rainfall could be locally heavy across Florida, especially along the eastern shoreline. Meanwhile, record warmth for portions of the Plains and Midwest with elevated fire concerns. For the west, a trough will keep the pattern unsettled with wet conditions. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

43°F

6°C

Humidity 92%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 04 Oct 12:15 PM MDT
Extended Forecast for

4 Miles E Big Sky MT

Winter Weather Advisory October 4, 06:00pm until October 5, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • This Afternoon

    This Afternoon: Rain.  High near 51. North northeast wind around 7 mph.  Chance of precipitation is 90%.

    High: 51 °F

    Rain

  • Tonight

    Tonight: Rain likely before 5am, then rain and snow.  Low around 30. North northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain Likely
    then
    Rain/Snow

  • Sunday

    Sunday: Rain and snow, becoming all rain after noon.  High near 45. North wind 3 to 6 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Rain/Snow
    then Rain
    Likely

  • Sunday Night

    Sunday Night: A slight chance of rain and snow before 9pm, then a slight chance of snow between 9pm and midnight.  Mostly cloudy, with a low around 21. North northeast wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 53. Calm wind.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 24. Calm wind.

    Low: 24 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62. Calm wind.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 30. Calm wind becoming south 5 to 8 mph in the evening. Winds could gust as high as 18 mph.

    Low: 30 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Rain. High near 51. North northeast wind around 7 mph. Chance of precipitation is 90%.
Tonight
Rain likely before 5am, then rain and snow. Low around 30. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Rain and snow, becoming all rain after noon. High near 45. North wind 3 to 6 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday Night
A slight chance of rain and snow before 9pm, then a slight chance of snow between 9pm and midnight. Mostly cloudy, with a low around 21. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Sunny, with a high near 53. Calm wind.
Monday Night
Clear, with a low around 24. Calm wind.
Tuesday
Sunny, with a high near 62. Calm wind.
Tuesday Night
Clear, with a low around 30. Calm wind becoming south 5 to 8 mph in the evening. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 69.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
10:28 am MDT Oct 4, 2025
12pm MDT Oct 4, 2025-6pm MDT Oct 10, 2025
 
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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