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

29°F

-2°C

Humidity 59%
Wind Speed SE 3 mph
Barometer 30.46 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 18 Oct 3:15 am MDT
Extended Forecast for

Grand Lake CO

  • Overnight

    Overnight: Mostly clear, with a low around 25. Light north wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Calm wind becoming southwest around 6 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. East wind around 6 mph becoming calm after midnight.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 62. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. South wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 25. Light north wind.
Sunday
Mostly sunny, with a high near 62. Calm wind becoming southwest around 6 mph.
Sunday Night
Partly cloudy, with a low around 30. East wind around 6 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 62. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Monday Night
Partly cloudy, with a low around 30. South wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 32.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
A chance of showers, mainly after noon. Partly sunny, with a high near 67.
Thursday Night
Showers likely. Mostly cloudy, with a low around 36.
Friday
Showers likely. Mostly cloudy, with a high near 65.
Friday Night
Rain and snow showers likely. Mostly cloudy, with a low around 29.
Saturday
A chance of rain and snow showers. Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.85°W (Elev. 8599 ft)
Last Update:
12:46 am MDT Oct 18, 2026
Forecast Valid:
3am MDT Oct 18, 2026-6pm MDT Oct 24, 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