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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

64°F

18°C

Humidity 9%
Wind Speed W 10 mph
Barometer 30.48 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 17 Oct 3:15 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: Sunny, with a high near 61. Southwest wind around 6 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. Light and variable wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 63. Calm wind becoming southwest around 5 mph.

    High: 63 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. East northeast wind around 6 mph becoming calm after midnight.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 61. Southwest wind around 6 mph.
Tonight
Mostly clear, with a low around 24. Light and variable wind.
Sunday
Mostly sunny, with a high near 63. Calm wind becoming southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 31. East northeast wind around 6 mph becoming calm after midnight.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 31.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
A chance of showers. Partly sunny, with a high near 66.
Thursday Night
Showers likely. Mostly cloudy, with a low around 35.
Friday
Showers likely. Mostly cloudy, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.82°W (Elev. 8386 ft)
Last Update:
12:46 pm MDT Oct 17, 2026
Forecast Valid:
3pm MDT Oct 17, 2026-6pm MDT Oct 23, 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