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.

Overcast

51°F

11°C

Humidity 80%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Sep 12:55 am MDT
Extended Forecast for

Arapahoe Peak CO

  • Overnight

    Overnight: A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. South southwest wind 9 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 46. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 37. West southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 37 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 48. Breezy, with a west wind 7 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    High: 48 °F

    Slight Chance
    Showers and
    Breezy then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 38. East wind 7 to 10 mph becoming north in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 45. Chance of precipitation is 80%.

    High: 45 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 50%.

    Low: 36 °F

    Chance
    Showers then
    Mostly Cloudy
    and Breezy

  • Friday

    Friday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 46. Breezy.

    High: 46 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 33.

    Low: 33 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. South southwest wind 9 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday
A chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 46. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 37. West southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 48. Breezy, with a west wind 7 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 38. East wind 7 to 10 mph becoming north in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Thursday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 45. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 46. Breezy.
Friday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 33.
Saturday
Snow showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 44.
Saturday Night
A chance of snow showers. Some thunder is also possible. Partly cloudy, with a low around 30.
Sunday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 43.
Sunday Night
A slight chance of snow showers. Partly cloudy, with a low around 30.
Monday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe Peak CO
 40.02°N 105.65°W (Elev. 12680 ft)
Last Update:
12:46 am MDT Sep 15, 2026
Forecast Valid:
1am MDT Sep 15, 2026-6pm MDT Sep 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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