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

27°F

-3°C

Humidity 90%
Wind Speed NE 3 mph
Barometer 29.88 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 27 Dec 7:15 pm MST
Extended Forecast for

3 Miles S Berthoud Falls 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

  • Tonight

    Low: -5 °F

    Snow and
    Blowing Snow

  • Sunday

    Sunday: Snow, mainly before 11am.  Widespread blowing snow before 11am. High near 6. Wind chill values as low as -32. Windy, with a west northwest wind 26 to 32 mph, with gusts as high as 45 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 6 °F

    Snow and
    Blowing Snow
    then Chance
    Snow and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -2. Wind chill values as low as -23. Blustery, with a west wind 20 to 23 mph, with gusts as high as 33 mph.

    Low: -2 °F

    Mostly Clear
    and Blustery

  • Monday

    Monday: Sunny, with a high near 16. Wind chill values as low as -24. Breezy, with a west wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 16 °F

    Sunny and
    Breezy then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 7. Breezy, with a west wind 17 to 24 mph, with gusts as high as 32 mph.

    Low: 7 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 23. Breezy.

    High: 23 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 12. Windy.

    Low: 12 °F

    Mostly Clear
    and Windy

  • Wednesday

    Wednesday: Sunny, with a high near 25. Breezy.

    High: 25 °F

    Sunny and
    Breezy

Detailed Forecast

Tonight
Snow. Widespread blowing snow, mainly after midnight. Low around -5. Wind chill values as low as -28. Windy, with a west wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Sunday
Snow, mainly before 11am. Widespread blowing snow before 11am. High near 6. Wind chill values as low as -32. Windy, with a west northwest wind 26 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday Night
Mostly clear, with a low around -2. Wind chill values as low as -23. Blustery, with a west wind 20 to 23 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 16. Wind chill values as low as -24. Breezy, with a west wind 10 to 18 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 7. Breezy, with a west wind 17 to 24 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 23. Breezy.
Tuesday Night
Mostly clear, with a low around 12. Windy.
Wednesday
Sunny, with a high near 25. Breezy.
Wednesday Night
Partly cloudy, with a low around 15. Windy.
New Year's Day
Partly sunny, with a high near 27. Breezy.
Thursday Night
A slight chance of snow. Partly cloudy, with a low around 18. Windy.
Friday
A chance of snow. Partly sunny, with a high near 25. Windy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 15. Windy.
Saturday
A chance of snow. Partly sunny, with a high near 18. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Berthoud Falls CO
 39.72°N 105.79°W (Elev. 12444 ft)
5:06 pm MST Dec 27, 2025
7pm MST Dec 27, 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