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

38°F

3°C

Humidity 70%
Wind Speed Calm
Barometer 30.20 in (996.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 13 Mar 7:50 am EDT
Extended Forecast for

3 Miles WNW Marietta GA

Frost Advisory March 13, 08:04am until March 13, 11:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory March 13, 08:04am until March 13, 11:00am

    NOW until 11:00am Fri

    Frost Advisory

  • Today

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. Southwest wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Southeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 74. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Showers

  • Monday Night

    Monday Night: A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 26.

    Low: 26 °F

    Slight Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 65. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Tonight
Mostly clear, with a low around 43. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. Southeast wind around 5 mph, with gusts as high as 15 mph.
Sunday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 74. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 48. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 62. Chance of precipitation is 80%.
Monday Night
A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Partly cloudy, with a low around 28.
Wednesday
Mostly sunny, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Marietta GA
 33.97°N 84.57°W (Elev. 1096 ft)
Last Update:
5:36 am EDT Mar 13, 2026
Forecast Valid:
8am EDT Mar 13, 2026-6pm EDT Mar 19, 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