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

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Overcast

74°F

23°C

Humidity 26%
Wind Speed Calm
Barometer 30.38 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Aug 7:15 pm MDT
Extended Forecast for

2 Miles S Arapahoe Peak CO

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 45. West wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly between noon and 3pm. Mostly sunny, with a high near 65. Breezy, with a west northwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 65 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67. West wind 8 to 14 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 67 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. North wind 6 to 10 mph becoming west southwest in the evening. Winds could gust as high as 17 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 68.

    High: 68 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers and possibly a thunderstorm after noon. Partly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny
    then T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47. Breezy.

    Low: 47 °F

    Breezy.
    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 45. West wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly between noon and 3pm. Mostly sunny, with a high near 65. Breezy, with a west northwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 46. West wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67. West wind 8 to 14 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 48. North wind 6 to 10 mph becoming west southwest in the evening. Winds could gust as high as 17 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Showers and possibly a thunderstorm after noon. Partly sunny, with a high near 66.
Saturday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47. Breezy.
Sunday
A slight chance of showers, then showers and thunderstorms likely after noon. Partly sunny, with a high near 64. Breezy.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Breezy.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 63. Breezy.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Arapahoe Peak CO
 40°N 105.65°W (Elev. 10614 ft)
Last Update:
12:46 pm MDT Aug 18, 2026
Forecast Valid:
7pm MDT Aug 18, 2026-6pm MDT Aug 25, 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