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.

Fog/Mist

48°F

9°C

Humidity 97%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 47°F (8°C)
Visibility 1.00 mi
Last update 23 Aug 6:55 am MDT
Extended Forecast for

3 Miles SW East Portal CO

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 59. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 59 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 45. West wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 58. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 58 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. West wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. West northwest wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

    High: 56 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 59. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 45. West wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 58. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. West wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. West northwest wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.
Thursday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 58.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW East Portal CO
 39.86°N 105.69°W (Elev. 11962 ft)
Last Update:
2:19 am MDT Aug 23, 2026
Forecast Valid:
7am MDT Aug 23, 2026-6pm MDT Aug 29, 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