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

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East and West

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Thunderstorm in Vicinity

75°F

24°C

Humidity 25%
Wind Speed SW 7 G 17 mph
Barometer 30.26 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 16 Jul 5:35 pm MDT
Extended Forecast for

Arapahoe Peak CO

Severe T-storm Watch until July 16, 10:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until July 16, 10:00pm

    NOW until 10:00pm Wed

    Severe T-storm Watch

  • This Afternoon

    High: 49 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. West northwest wind 7 to 10 mph becoming southeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 53. West wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 53 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday 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 43. Breezy, with a west wind 11 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Breezy.
    Slight Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 53. Breezy, with a west wind 10 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 53 °F

    Partly Sunny
    and Breezy
    then T-storms
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. Breezy. Chance of precipitation is 50%.

    Low: 42 °F

    Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Showers and possibly a thunderstorm after noon. High near 52. Breezy. Chance of precipitation is 80%.

    High: 52 °F

    Partly Sunny
    and Breezy
    then T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Breezy.
    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely. Mostly cloudy, with a steady temperature around 49. West northwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Tonight
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. West northwest wind 7 to 10 mph becoming southeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 53. West wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday 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 43. Breezy, with a west wind 11 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 53. Breezy, with a west wind 10 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. Breezy. Chance of precipitation is 50%.
Saturday
Showers and possibly a thunderstorm after noon. High near 52. Breezy. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41. Breezy.
Sunday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 53. Breezy.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41. Breezy.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 55. Breezy.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 42. Breezy.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 56. Breezy.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 43. Breezy.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 54. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe Peak CO
 40.02°N 105.65°W (Elev. 12680 ft)
Last Update:
2:48 pm MDT Jul 16, 2025
Forecast Valid:
5pm MDT Jul 16, 2025-6pm MDT Jul 23, 2025
 
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