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

Hazardous Weather Conditions

Current conditions at

Cobb County International Airport - McCollum Field (KRYY)

Lat: 34.01°NLon: 84.6°WElev: 997ft.

A Few Clouds

76°F

24°C

Humidity 82%
Wind Speed W 3 mph
Barometer 30.02 in (1015.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 11 Sep 3:50 am EDT
Extended Forecast for

3 Miles WNW Marietta GA

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 91. Heat index values as high as 98. Calm wind becoming south around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 85. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    T-storms then
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Calm wind. Chance of precipitation is 80%.

    Low: 69 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 91. Heat index values as high as 98. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 85. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Calm wind. Chance of precipitation is 80%.
Sunday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 71.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Marietta GA
 33.97°N 84.6°W (Elev. 1001 ft)
Last Update:
2:26 am EDT Sep 11, 2026
Forecast Valid:
4am EDT Sep 11, 2026-6pm EDT Sep 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation