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.

Partly Cloudy

74°F

23°C

Humidity 20%
Wind Speed S 15 G 22 mph
Barometer 29.93 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 11 Oct 4:15 pm MDT
Extended Forecast for

3 Miles SSW East Portal CO

  • Tonight

    Tonight: A slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 37. Windy, with a west southwest wind 9 to 14 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Showers and
    Windy

  • Columbus Day

    Columbus Day: Sunny, with a high near 52. Breezy, with a west southwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. West southwest wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Partly sunny, with a high near 46. West southwest wind 7 to 14 mph becoming east in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 46 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain showers likely before midnight, then snow showers, possibly mixed with rain. Low around 31. East wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    Low: 31 °F

    Showers
    Likely then
    Rain/Snow

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 34. Chance of precipitation is 90%.

    High: 34 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before midnight. Some thunder is also possible. Low around 26. Chance of precipitation is 80%.

    Low: 26 °F

    Snow Showers
    then Chance
    Snow Showers

  • Thursday

    Thursday: A chance of snow showers. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 37. Windy, with a west southwest wind 9 to 14 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 20%.
Columbus Day
Sunny, with a high near 52. Breezy, with a west southwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 40 mph.
Monday Night
Mostly clear, with a low around 34. West southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Tuesday
A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Partly sunny, with a high near 46. West southwest wind 7 to 14 mph becoming east in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday Night
Rain showers likely before midnight, then snow showers, possibly mixed with rain. Low around 31. East wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Wednesday
Snow showers. Some thunder is also possible. High near 34. Chance of precipitation is 90%.
Wednesday Night
Snow showers, mainly before midnight. Some thunder is also possible. Low around 26. Chance of precipitation is 80%.
Thursday
A chance of snow showers. Partly sunny, with a high near 35.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 23.
Friday
A slight chance of snow showers before noon. Sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 46. Breezy.
Saturday Night
Mostly clear, with a low around 31. Breezy.
Sunday
Sunny, with a high near 46. Breezy.
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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:
12:46 pm MDT Oct 11, 2026
Forecast Valid:
4pm MDT Oct 11, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation