National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Depression Nine Forms; Heavy Rainfall in the Southwest and Southeast this Weekend

Tropical Depression Nine has formed and will continue to slowly move to the north-northwest in the coming days. As the storm passes close to the east coast of Florida, tropical storm conditions are possible Sunday through Monday. Tropical Storm Watches have been issued. Significant uncertainty remains in the track and intensity, but chances for impacts to the Southeast are increasing. Read More >

Current conditions at

Yellowstone Club - Base Area (YCBAS)

Lat: 45.23924°NLon: 111.41476°WElev: 7200.0ft.

NA

48°F

9°C

Humidity 47%
Wind Speed W 3 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 27 Sep 10:00 PM MDT
Extended Forecast for

Big Sky MT

  • Tonight

    Tonight: Mostly clear, with a low around 43. East southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. South southeast wind 3 to 6 mph.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. South southeast wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 47. South wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 65. South wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    High: 65 °F

    Chance Rain
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 39. South wind 7 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    Low: 39 °F

    Chance
    T-storms then
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain before noon, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 64. South wind 6 to 13 mph, with gusts as high as 26 mph.

    High: 64 °F

    Chance Rain
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 43. East southeast wind 5 to 7 mph becoming light and variable after midnight.
Sunday
Mostly sunny, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 45. South southeast wind 3 to 6 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. South southeast wind 3 to 8 mph. Winds could gust as high as 18 mph.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 47. South wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Tuesday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 65. South wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 39. South wind 7 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Wednesday
A chance of rain before noon, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 64. South wind 6 to 13 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 37.
Friday
A chance of rain. Mostly cloudy, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 31.
Saturday
A chance of rain. Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Sky MT
 45.25°N 111.32°W (Elev. 6398 ft)
Last Update:
10:34 pm MDT Sep 27, 2025
Forecast Valid:
11pm MDT Sep 27, 2025-6pm MDT Oct 4, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation