Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

NA

19°F

-7°C

Humidity 54%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint 5°F (-15°C)
Visibility NA
Wind Chill8°F (-13°C)
Last update 27 Dec 04:15 PM MST
Extended Forecast for

16 Miles W Gardiner MT

  • This Afternoon

    This Afternoon: A 30 percent chance of snow showers.  Partly sunny and cold, with a steady temperature around 6. Wind chill values as low as -10. West northwest wind around 10 mph.

    High: 6 °F

    Chance Snow
    Showers

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly before 7pm.  Partly cloudy, with a low around -4. Wind chill values as low as -15. West wind 5 to 8 mph.

    Low: -4 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 11. Wind chill values as low as -15. Southwest wind 3 to 6 mph.

    High: 11 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 0. Wind chill values as low as -10. South wind 5 to 7 mph.

    Low: 0 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 20. South southwest wind around 7 mph.

    High: 20 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 9. South southwest wind around 7 mph.

    Low: 9 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25. South southwest wind around 7 mph.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of snow showers. Partly sunny and cold, with a steady temperature around 6. Wind chill values as low as -10. West northwest wind around 10 mph.
Tonight
A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around -4. Wind chill values as low as -15. West wind 5 to 8 mph.
Sunday
Sunny, with a high near 11. Wind chill values as low as -15. Southwest wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 0. Wind chill values as low as -10. South wind 5 to 7 mph.
Monday
Sunny, with a high near 20. South southwest wind around 7 mph.
Monday Night
Partly cloudy, with a low around 9. South southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 25. South southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Mostly sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 15.
New Year's Day
Partly sunny, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
A chance of snow showers. Mostly cloudy, with a high near 26.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 14.
Saturday
A chance of snow showers. Partly sunny, with a high near 22.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W Gardiner MT
 45.06°N 111.04°W (Elev. 8474 ft)
4:31 pm MST Dec 27, 2025
5pm MST Dec 27, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

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