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

46°F

8°C

Humidity 61%
Wind Speed Calm
Barometer 30.31 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 4 Sep 1:15 am MDT
Extended Forecast for

11 Miles SSE Williams Fork Reservoir CO

  • Overnight

    Overnight: Mostly clear, with a low around 46. South southeast wind 3 to 5 mph.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    High: 74 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 49. South southwest wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 73. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. South southeast wind around 6 mph becoming calm after midnight.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Labor Day

    Labor Day: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers before midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 46. South southeast wind 3 to 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Friday Night
A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 49. South southwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 73. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. South southeast wind around 6 mph becoming calm after midnight.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.
Labor Day
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.
Monday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 47.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 49.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSE Williams Fork Reservoir CO
 39.9°N 106.1°W (Elev. 8573 ft)
Last Update:
12:46 am MDT Sep 4, 2026
Forecast Valid:
1am MDT Sep 4, 2026-6pm MDT Sep 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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