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.

Partly Cloudy

44°F

7°C

Humidity 31%
Wind Speed W 15 G 26 mph
Barometer 29.81 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 27 Dec 12:15 pm MST
Extended Forecast for

5 Miles SW LONG'S PEAK CO

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

    NOW until 11:00am Sun

    Winter Weather Advisory

  • This Afternoon

    High: 21 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times.  Areas of blowing snow. Low around -1. Wind chill values as low as -18. Breezy, with a west wind 17 to 22 mph, with gusts as high as 34 mph.  Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    Low: -1 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Sunday

    Sunday: Snow, mainly before 11am.  Patchy blowing snow before 11am. Temperature falling to around -3 by 5pm. Wind chill values as low as -27. Windy, with a west wind 22 to 26 mph, with gusts as high as 40 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 0 °F

    Snow and
    Patchy
    Blowing Snow
    then Chance
    Snow and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -5. Wind chill values as low as -28. Breezy, with a west wind 20 to 23 mph, with gusts as high as 33 mph.

    Low: -5 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 13. Breezy, with a west wind 14 to 20 mph, with gusts as high as 26 mph.

    High: 13 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 5. Breezy.

    Low: 5 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 21. Breezy.

    High: 21 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 11. Breezy.

    Low: 11 °F

    Mostly Clear
    and Breezy

Detailed Forecast

This Afternoon
Snow likely. Areas of blowing snow. Cloudy, with a high near 21. Wind chill values as low as zero. Windy, with a west southwest wind 23 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 3 to 7 inches possible.
Tonight
Snow. The snow could be heavy at times. Areas of blowing snow. Low around -1. Wind chill values as low as -18. Breezy, with a west wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Sunday
Snow, mainly before 11am. Patchy blowing snow before 11am. Temperature falling to around -3 by 5pm. Wind chill values as low as -27. Windy, with a west wind 22 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
Mostly clear, with a low around -5. Wind chill values as low as -28. Breezy, with a west wind 20 to 23 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 13. Breezy, with a west wind 14 to 20 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 5. Breezy.
Tuesday
Sunny, with a high near 21. Breezy.
Tuesday Night
Mostly clear, with a low around 11. Breezy.
Wednesday
Mostly sunny, with a high near 22. Breezy.
Wednesday Night
Mostly cloudy, with a low around 13. Breezy.
New Year's Day
A slight chance of snow. Mostly cloudy, with a high near 25. Breezy.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 16. Breezy.
Friday
A chance of snow. Mostly cloudy, with a high near 23. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW LONG'S PEAK CO
 40.2°N 105.67°W (Elev. 11558 ft)
3:26 am MST Dec 27, 2025
12pm MST Dec 27, 2025-6pm MST Jan 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database