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

69°F

21°C

Humidity 51%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Aug 10:55 am MDT
Extended Forecast for

3 Miles W Arapahoe Peak CO

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 63. Breezy, with a west wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely and
    Breezy

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 46. West wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 63. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 63 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 61. Light west wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    High: 61 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. Chance of precipitation is 30%.

    Low: 43 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 63. Breezy, with a west wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 46. West wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 63. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 3 to 7 mph. Chance of precipitation is 50%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 61. Light west wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. Chance of precipitation is 30%.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.
Thursday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 63.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 46.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Arapahoe Peak CO
 40.02°N 105.71°W (Elev. 11135 ft)
Last Update:
2:19 am MDT Aug 23, 2026
Forecast Valid:
11am MDT Aug 23, 2026-6pm MDT Aug 29, 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