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

Granby-Grand County Airport (KGNB)

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

Fair

40°F

4°C

Humidity 73%
Wind Speed Calm
Barometer 30.49 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 8 Oct 8:35 am MDT
Extended Forecast for

3 Miles WSW East Portal CO

  • Today

    Today: A slight chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 51. West northwest wind around 7 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 51 °F

    Sunny then
    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 36. West southwest wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 36 °F

    Slight Chance
    Showers then
    Clear

  • Friday

    Friday: A 20 percent chance of showers after 2pm. Sunny, with a high near 51. West wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 51 °F

    Sunny then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 36. Breezy, with a west southwest wind 13 to 17 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 48. Breezy, with a west southwest wind 11 to 15 mph, with gusts as high as 26 mph.

    High: 48 °F

    Breezy. Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

  • Columbus Day

    Columbus Day: A slight chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly sunny, with a high near 47. Breezy.

    High: 47 °F

    Breezy.
    Slight Chance
    Rain/Snow
    then Slight
    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 51. West northwest wind around 7 mph becoming south in the afternoon. Chance of precipitation is 30%.
Tonight
A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 36. West southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Friday
A 20 percent chance of showers after 2pm. Sunny, with a high near 51. West wind 8 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 36. Breezy, with a west southwest wind 13 to 17 mph, with gusts as high as 29 mph.
Saturday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 48. Breezy, with a west southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 47.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 36.
Columbus Day
A slight chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly sunny, with a high near 47. Breezy.
Monday Night
A chance of rain and snow showers before midnight, then a chance of snow showers between midnight and 3am, then a chance of rain and snow showers after 3am. Mostly cloudy, with a low around 34.
Tuesday
A chance of rain and snow showers. Mostly sunny, with a high near 45.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 33.
Wednesday
A chance of snow showers. Partly sunny, with a high near 40. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW East Portal CO
 39.89°N 105.7°W (Elev. 11722 ft)
Last Update:
12:46 am MDT Oct 8, 2026
Forecast Valid:
9am MDT Oct 8, 2026-6pm MDT Oct 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation