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

59°F

15°C

Humidity 93%
Wind Speed Calm
Barometer 30.07 in (991.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Dec 10:50 pm EST
Extended Forecast for

3 Miles ENE Marietta, Cobb County-McCollum Field Airport GA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 9am and 3pm. Mostly cloudy, with a high near 72. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely after 1am. Mostly cloudy, with a low around 45. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 45 °F

    Mostly Cloudy
    then Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 54. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 54 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 23. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. Calm wind.
Sunday
A slight chance of showers between 9am and 3pm. Mostly cloudy, with a high near 72. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Sunday Night
Showers likely after 1am. Mostly cloudy, with a low around 45. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 54. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 23. Northwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Sunny, with a high near 47.
Wednesday Night
Mostly clear, with a low around 29.
New Year's Day
Sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 51.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 33.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Marietta, Cobb County-McCollum Field Airport GA
 34.01°N 84.54°W (Elev. 997 ft)
Last Update:
1:16 pm EST Dec 27, 2025
Forecast Valid:
11pm EST Dec 27, 2025-6pm EST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation