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.

Fair

78°F

26°C

Humidity 87%
Wind Speed W 8 mph
Barometer 29.99 in (1014.2 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 19 Jul 7:50 pm EDT
Extended Forecast for

2 Miles SSE Marietta, Cobb County-McCollum Field Airport GA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 73. South wind around 5 mph becoming calm.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92. Heat index values as high as 100. South wind 5 to 10 mph.

    High: 92 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 50%.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

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

    High: 89 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 73. South wind around 5 mph becoming calm.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 92. Heat index values as high as 100. South wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 74. South wind around 5 mph.
Wednesday
A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 50%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Marietta, Cobb County-McCollum Field Airport GA
 33.99°N 84.57°W (Elev. 1129 ft)
Last Update:
2:27 pm EDT Jul 19, 2026
Forecast Valid:
8pm EDT Jul 19, 2026-6pm EDT Jul 26, 2026
 
Forecast Discussion
 
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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