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

Dangerous Heat in the West; Coastal Flooding & High Rip Current Risk through the Weekend on the East Coast; Flash Flooding Concerns in the Southeast and Southwest

A dangerous, record heat wave continues across portions of the West through Tuesday. High rip current risk and dangerous surf continue through the weekend. There are flash flooding concerns through the weekend for portions of the Southeast and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Mostly Cloudy

53°F

12°C

Humidity 89%
Wind Speed Calm
Barometer 30.54 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 23 Aug 2:15 am MDT
Extended Forecast for

East Portal CO

  • Overnight

    Overnight: A 30 percent chance of showers. Mostly cloudy, with a low around 44. South southwest wind around 6 mph.

    Low: 44 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers and thunderstorms likely after 9am. Mostly cloudy, with a high near 58. South southwest wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 60%.

    High: 58 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 44. East southeast wind around 7 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, then showers and thunderstorms likely after noon. Increasing clouds, with a high near 60. West wind 6 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 60 °F

    Chance
    Showers then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. East wind around 6 mph becoming light and variable. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm, then showers and thunderstorms after noon. High near 53. Chance of precipitation is 90%.

    High: 53 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 53.

    High: 53 °F

    Showers
    Likely then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 44. South southwest wind around 6 mph.
Saturday
A chance of showers, then showers and thunderstorms likely after 9am. Mostly cloudy, with a high near 58. South southwest wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 44. East southeast wind around 7 mph becoming west after midnight. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers and thunderstorms likely after noon. Increasing clouds, with a high near 60. West wind 6 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. East wind around 6 mph becoming light and variable. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm, then showers and thunderstorms after noon. High near 53. Chance of precipitation is 90%.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 53.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 55.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43.
Thursday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 53.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Portal CO
 39.91°N 105.64°W (Elev. 10397 ft)
Last Update:
8:26 pm MDT Aug 22, 2025
Forecast Valid:
2am MDT Aug 23, 2025-6pm MDT Aug 29, 2025
 
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