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

22°F

-6°C

Humidity 67%
Wind Speed SW 6 mph
Barometer 30.05 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 5 Dec 2:35 am MST
Extended Forecast for

3 Miles SSW East Portal 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 40 percent chance of snow. Widespread blowing snow, mainly after 5am. Mostly cloudy, with a low around 6. Wind chill values as low as -19. Very windy, with a west northwest wind 33 to 36 mph, with gusts as high as 55 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 6 °F

    Chance Snow
    and Blowing
    Snow

  • Friday

    Friday: Snow likely, mainly before 3pm. Widespread blowing snow, mainly before 7am. Mostly cloudy, with a high near 15. Wind chill values as low as -17. Windy, with a west northwest wind 21 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 15 °F

    Snow Likely
    and Blowing
    Snow

  • Friday Night

    Friday Night: Snow, mainly after 11pm. The snow could be heavy at times. Widespread blowing snow, mainly after 10pm. Temperature rising to around 16 by 4am. Wind chill values as low as -11. Windy, with a west wind 25 to 32 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.

    Low: 10 °F⇑

    Heavy Snow
    and Blowing
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow. High near 17. Wind chill values as low as -12. Windy, with a west northwest wind around 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

    High: 17 °F

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Snow likely. Widespread blowing snow, mainly before 5am. Mostly cloudy, with a low around 7. Windy, with a west wind 26 to 30 mph, with gusts as high as 55 mph. Chance of precipitation is 60%.

    Low: 7 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow before 11am. Areas of blowing snow. Mostly sunny, with a high near 14. Windy.

    High: 14 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Partly cloudy, with a low around 8. Windy.

    Low: 8 °F

    Slight Chance
    Snow and
    Windy

  • Monday

    Monday: A chance of snow, mainly before 11am. Partly sunny, with a high near 19. Windy.

    High: 19 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Very windy.

    Low: 13 °F

    Partly Cloudy
    and Very
    Windy

Detailed Forecast

Overnight
A 40 percent chance of snow. Widespread blowing snow, mainly after 5am. Mostly cloudy, with a low around 6. Wind chill values as low as -19. Very windy, with a west northwest wind 33 to 36 mph, with gusts as high as 55 mph. Total nighttime snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly before 3pm. Widespread blowing snow, mainly before 7am. Mostly cloudy, with a high near 15. Wind chill values as low as -17. Windy, with a west northwest wind 21 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow, mainly after 11pm. The snow could be heavy at times. Widespread blowing snow, mainly after 10pm. Temperature rising to around 16 by 4am. Wind chill values as low as -11. Windy, with a west wind 25 to 32 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow. High near 17. Wind chill values as low as -12. Windy, with a west northwest wind around 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
Saturday Night
Snow likely. Widespread blowing snow, mainly before 5am. Mostly cloudy, with a low around 7. Windy, with a west wind 26 to 30 mph, with gusts as high as 55 mph. Chance of precipitation is 60%.
Sunday
A 40 percent chance of snow before 11am. Areas of blowing snow. Mostly sunny, with a high near 14. Windy.
Sunday Night
A 20 percent chance of snow after 11pm. Partly cloudy, with a low around 8. Windy.
Monday
A chance of snow, mainly before 11am. Partly sunny, with a high near 19. Windy.
Monday Night
Partly cloudy, with a low around 13. Very windy.
Tuesday
A slight chance of snow after 11am. Partly sunny, with a high near 26. Very windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 16. Very windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 25. Very windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 20. Very windy.
Thursday
A chance of snow. Partly sunny, with a high near 26. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW East Portal CO
 39.87°N 105.66°W (Elev. 10620 ft)
Last Update:
2:26 am MST Dec 5, 2025
Forecast Valid:
2am MST Dec 5, 2025-6pm MST Dec 11, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation