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

24°C

76°F

Humidity 82%
Wind Speed Calm
Barometer 1013.5 mb (29.97 in)
Dewpoint 21°C (70°F)
Visibility 16 km
Heat Index25°C (77°F)
Last update 22 Jul 4:50 am EDT
Extended Forecast for

3 Miles WNW Marietta GA

  • Today

    Today: A chance of thunderstorms, mainly after 5pm. Partly sunny, with a high near 32. Heat index values as high as 37. South wind 10 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 30%.

    High: 32 °C

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 23. South wind around 10 km/h. Chance of precipitation is 40%.

    Low: 23 °C

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 31. Heat index values as high as 36. Southwest wind 10 to 15 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 31 °C

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 22. Calm wind. Chance of precipitation is 80%.

    Low: 22 °C

    T-storms
    Likely then
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 8am. High near 30. Southeast wind around 10 km/h becoming west in the afternoon. Chance of precipitation is 90%.

    High: 30 °C

    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 22. Chance of precipitation is 80%.

    Low: 22 °C

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 30. Chance of precipitation is 80%.

    High: 30 °C

    Showers
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 22. Chance of precipitation is 80%.

    Low: 22 °C

    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly between 8am and 2pm. Mostly sunny, with a high near 32.

    High: 32 °C

    Chance
    T-storms

Detailed Forecast

Today
A chance of thunderstorms, mainly after 5pm. Partly sunny, with a high near 32. Heat index values as high as 37. South wind 10 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 23. South wind around 10 km/h. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 31. Heat index values as high as 36. Southwest wind 10 to 15 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Thursday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 22. Calm wind. Chance of precipitation is 80%.
Friday
Showers, with thunderstorms also possible after 8am. High near 30. Southeast wind around 10 km/h becoming west in the afternoon. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm. Low around 22. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 30. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 22. Chance of precipitation is 80%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly between 8am and 2pm. Mostly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Marietta GA
 33.97°N 84.6°W (Elev. 1001 m)
Last Update:
2:26 am EDT Jul 22, 2026
Forecast Valid:
5am EDT Jul 22, 2026-6pm EDT Jul 28, 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