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Hazardous Weather Conditions

Current conditions at

Cobb County International Airport - McCollum Field (KRYY)

Lat: 34.01°NLon: 84.6°WElev: 997ft.

Fair

97°F

36°C

Humidity 42%
Wind Speed Vrbl 5 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 29 Jul 5:50 pm EDT
Extended Forecast for

Marietta, Cobb County-McCollum Field Airport GA

Heat Advisory July 29, 06:47pm until July 30, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 29, 06:47pm until July 30, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 75 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 97. Calm wind becoming southeast around 5 mph. Chance of precipitation is 80%.

    High: 90 °F

    Partly Sunny
    then T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 8pm. Patchy fog after 2am. Low around 74. South wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 74 °F

    T-storms then
    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 91. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 91 °F

    Chance
    T-storms and
    Patchy Fog
    then T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 74. West wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 74 °F

    T-storms then
    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 92. Chance of precipitation is 80%.

    High: 92 °F

    Chance
    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 72. Chance of precipitation is 80%.

    Low: 72 °F

    T-storms then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 75. North wind around 5 mph becoming calm in the evening.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 97. Calm wind becoming southeast around 5 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms, mainly before 8pm. Patchy fog after 2am. Low around 74. South wind around 5 mph becoming calm. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 91. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 74. West wind around 5 mph becoming calm. Chance of precipitation is 80%.
Friday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 92. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 72. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 70. Chance of precipitation is 80%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Marietta, Cobb County-McCollum Field Airport GA
 34.02°N 84.6°W (Elev. 1001 ft)
Last Update:
2:17 pm EDT Jul 29, 2025
Forecast Valid:
6pm EDT Jul 29, 2025-6pm EDT Aug 5, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation