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

Cobb County International Airport - McCollum Field (KRYY)

Lat: 34.01°NLon: 84.6°WElev: 997ft.

Fair

82°F

28°C

Humidity 53%
Wind Speed E 3 mph
Barometer 30.16 in (1020.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 9 Sep 8:50 pm EDT
Extended Forecast for

3 Miles WNW Roswell GA

  • Tonight

    Tonight: Mostly clear, with a low around 69. Southeast wind around 5 mph becoming calm.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Heat index values as high as 97. Calm wind becoming southwest around 5 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 99. Calm wind becoming southwest around 5 mph.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 8am. High near 89. Chance of precipitation is 90%.

    High: 89 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 70. Chance of precipitation is 80%.

    Low: 70 °F

    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.

    High: 89 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 69. Southeast wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 93. Heat index values as high as 97. Calm wind becoming southwest around 5 mph.
Thursday Night
Partly cloudy, with a low around 71. Calm wind.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 99. Calm wind becoming southwest around 5 mph.
Friday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 8am. High near 89. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 70. Chance of precipitation is 80%.
Sunday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Monday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Roswell GA
 34.07°N 84.4°W (Elev. 997 ft)
Last Update:
6:41 pm EDT Sep 9, 2026
Forecast Valid:
9pm EDT Sep 9, 2026-6pm EDT Sep 16, 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