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

Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

5°F

-15°C

Humidity 82%
Wind Speed E 5 mph
Barometer 30.58 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 30 Dec 2:15 am MST
Extended Forecast for

Granby CO

  • Overnight

    Overnight: Clear, with a low around -2. Wind chill values as low as -9. Light and variable wind.

    Low: -2 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 34. Wind chill values as low as -10. West wind 3 to 6 mph.

    High: 34 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10. Light west southwest wind.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44. Calm wind becoming west around 6 mph in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16. Light west southwest wind.

    Low: 16 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A chance of snow after 11am, mixing with rain after 2pm. Mostly cloudy, with a high near 41. Chance of precipitation is 50%.

    High: 41 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.

    Low: 26 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain and snow likely, mainly before 11am. Mostly cloudy, with a high near 42.

    High: 42 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around -2. Wind chill values as low as -9. Light and variable wind.
Tuesday
Sunny, with a high near 34. Wind chill values as low as -10. West wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 10. Light west southwest wind.
Wednesday
Mostly sunny, with a high near 44. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 16. Light west southwest wind.
New Year's Day
A chance of snow after 11am, mixing with rain after 2pm. Mostly cloudy, with a high near 41. Chance of precipitation is 50%.
Thursday Night
A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Friday
Rain and snow likely, mainly before 11am. Mostly cloudy, with a high near 42.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 17.
Sunday
A slight chance of snow. Mostly sunny, with a high near 41.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 15.
Monday
A slight chance of snow. Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Granby CO
 40.09°N 105.95°W (Elev. 7999 ft)
Last Update:
2:11 am MST Dec 30, 2025
Forecast Valid:
2am MST Dec 30, 2025-6pm MST Jan 5, 2026
 
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