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

78°F

26°C

Humidity 27%
Wind Speed SE 16 G 21 mph
Barometer 30.45 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 20 Aug 7:15 pm MDT
Extended Forecast for

East Portal CO

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 49. East wind 6 to 9 mph becoming west southwest after midnight. Winds could gust as high as 15 mph.

    Low: 49 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 71. West wind 6 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 17 mph.

    High: 71 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. East wind 6 to 8 mph becoming west southwest after midnight.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers and possibly a thunderstorm after noon. High near 68. West southwest wind 6 to 8 mph becoming east southeast in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 80%.

    High: 68 °F

    Mostly Sunny
    then Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 46. West wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 65. Breezy.

    High: 65 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny
    then T-storms
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 49. East wind 6 to 9 mph becoming west southwest after midnight. Winds could gust as high as 15 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 71. West wind 6 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 17 mph.
Friday Night
Partly cloudy, with a low around 48. East wind 6 to 8 mph becoming west southwest after midnight.
Saturday
Showers and possibly a thunderstorm after noon. High near 68. West southwest wind 6 to 8 mph becoming east southeast in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 46. West wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 65. Breezy.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.
Monday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 65.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.
Tuesday
A slight chance of showers, then showers and thunderstorms likely after noon. Mostly sunny, with a high near 64.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 65.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
East Portal CO
 39.91°N 105.67°W (Elev. 10630 ft)
Last Update:
12:46 pm MDT Aug 20, 2026
Forecast Valid:
7pm MDT Aug 20, 2026-6pm MDT Aug 27, 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