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

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Overcast

20°F

-7°C

Humidity 71%
Wind Speed S 3 mph
Barometer 30.05 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 5 Dec 2:55 am MST
Extended Forecast for

Guanella Pass CO

Winter Storm Warning December 5, 11:00pm until December 6, 11:00pm
Click here for hazard details and duration
Winter Storm Warning

  • Overnight

    Overnight: A 30 percent chance of snow. Patchy blowing snow. Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -15. Windy, with a west northwest wind around 31 mph, with gusts as high as 47 mph. Little or no snow accumulation expected.

    Low: 9 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Friday

    Friday: A 50 percent chance of snow. Patchy blowing snow before 4pm, then patchy blowing snow after 5pm. Partly sunny, with a high near 18. Wind chill values as low as -12. Windy, with a west northwest wind 18 to 26 mph, with gusts as high as 40 mph. New snow accumulation of less than one inch possible.

    High: 18 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow likely, mainly after 11pm. Widespread blowing snow, mainly after 2am. Mostly cloudy, with a temperature rising to around 18 by 4am. Wind chill values as low as -9. Windy, with a west wind 22 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

    Low: 11 °F⇑

    Snow Likely
    and Blowing
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 1pm. High near 20. Wind chill values as low as -8. Windy, with a west northwest wind 30 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    High: 20 °F

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Widespread blowing snow, mainly before 9pm. Mostly cloudy, with a low around 7. Windy, with a west wind 21 to 28 mph, with gusts as high as 49 mph.

    Low: 7 °F

    Chance Snow
    and Blowing
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before 11am. Patchy blowing snow before 4pm. Mostly sunny, with a high near 17. Windy.

    High: 17 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 7. Windy.

    Low: 7 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: A slight chance of snow before 11am. Mostly sunny, with a high near 21. Windy.

    High: 21 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. Windy.

    Low: 12 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Overnight
A 30 percent chance of snow. Patchy blowing snow. Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -15. Windy, with a west northwest wind around 31 mph, with gusts as high as 47 mph. Little or no snow accumulation expected.
Friday
A 50 percent chance of snow. Patchy blowing snow before 4pm, then patchy blowing snow after 5pm. Partly sunny, with a high near 18. Wind chill values as low as -12. Windy, with a west northwest wind 18 to 26 mph, with gusts as high as 40 mph. New snow accumulation of less than one inch possible.
Friday Night
Snow likely, mainly after 11pm. Widespread blowing snow, mainly after 2am. Mostly cloudy, with a temperature rising to around 18 by 4am. Wind chill values as low as -9. Windy, with a west wind 22 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 1pm. High near 20. Wind chill values as low as -8. Windy, with a west northwest wind 30 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Saturday Night
A 50 percent chance of snow. Widespread blowing snow, mainly before 9pm. Mostly cloudy, with a low around 7. Windy, with a west wind 21 to 28 mph, with gusts as high as 49 mph.
Sunday
A 20 percent chance of snow before 11am. Patchy blowing snow before 4pm. Mostly sunny, with a high near 17. Windy.
Sunday Night
Partly cloudy, with a low around 7. Windy.
Monday
A slight chance of snow before 11am. Mostly sunny, with a high near 21. Windy.
Monday Night
Partly cloudy, with a low around 12. Windy.
Tuesday
Mostly sunny, with a high near 29. Very windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 20. Very windy.
Wednesday
A chance of snow. Partly sunny, with a high near 27. Very windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 22. Windy.
Thursday
A chance of snow. Partly sunny, with a high near 29. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Guanella Pass CO
 39.6°N 105.72°W (Elev. 11752 ft)
Last Update:
2:26 am MST Dec 5, 2025
Forecast Valid:
3am MST Dec 5, 2025-6pm MST Dec 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation