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 >

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Overcast

20°F

-7°C

Humidity 73%
Wind Speed W 16 G 22 mph
Barometer 29.93 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 28 Dec 2:55 am MST
Extended Forecast for

Arapahoe Peak CO

Winter Weather Advisory December 28, 03:01am until December 28, 11:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 28, 03:01am until December 28, 11:00am

    NOW until 11:00am Sun

    Winter Weather Advisory

  • Overnight

    Low: -5 °F

    Heavy Snow
    and Blowing
    Snow

  • Sunday

    Sunday: Snow, mainly before 11am.  Widespread blowing snow before 11am. High near 6. Wind chill values as low as -31. Windy, with a west northwest wind 25 to 34 mph, with gusts as high as 41 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 6 °F

    Snow and
    Blowing Snow
    then Chance
    Snow and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -5. Wind chill values as low as -29. Windy, with a west wind 23 to 26 mph, with gusts as high as 33 mph.

    Low: -5 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny, with a high near 11. Wind chill values as low as -30. Breezy, with a west wind 15 to 23 mph, with gusts as high as 29 mph.

    High: 11 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 5. Windy, with a west wind 23 to 26 mph, with gusts as high as 32 mph.

    Low: 5 °F

    Mostly Clear
    and Windy

  • Tuesday

    Tuesday: Sunny, with a high near 19. Windy.

    High: 19 °F

    Sunny and
    Windy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10. Windy.

    Low: 10 °F

    Mostly Clear
    and Windy

  • Wednesday

    Wednesday: Sunny, with a high near 21. Windy.

    High: 21 °F

    Sunny and
    Windy

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Widespread blowing snow. Low around -5. Wind chill values as low as -27. Windy, with a west wind around 26 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Sunday
Snow, mainly before 11am. Widespread blowing snow before 11am. High near 6. Wind chill values as low as -31. Windy, with a west northwest wind 25 to 34 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Mostly clear, with a low around -5. Wind chill values as low as -29. Windy, with a west wind 23 to 26 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 11. Wind chill values as low as -30. Breezy, with a west wind 15 to 23 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 5. Windy, with a west wind 23 to 26 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 19. Windy.
Tuesday Night
Mostly clear, with a low around 10. Windy.
Wednesday
Sunny, with a high near 21. Windy.
Wednesday Night
Partly cloudy, with a low around 14. Windy.
New Year's Day
A slight chance of snow after 11am. Partly sunny, with a high near 23. Windy.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 16. Windy.
Friday
A chance of snow. Mostly cloudy, with a high near 20. Windy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 10. Windy.
Saturday
A chance of snow. Mostly cloudy, with a high near 14. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe Peak CO
 40.02°N 105.65°W (Elev. 12680 ft)
5:06 pm MST Dec 27, 2025
3am MST Dec 28, 2025-6pm MST Jan 3, 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