Cobb County weather forecast for Friday, August 18, 2023

Photo of Veterans Memorial Highway on a clear day with the Cobb County Courier logo and the words "Weather forecast"

The National Weather Service forecasts sunny skies here in Cobb County on Friday, August 18, 2023, with a high near 87 degrees.

Tonight it is expected to be clear, with an overnight low of around 64 degrees.

What does the extended forecast have in store?

This forecast is centered on Dobbins Air Reserve Base in Marietta.


Sunny, with a high near 87. Northwest wind 5 to 10 mph, with gusts as high as 15 mph. 


Clear, with a low around 64. Northeast wind around 5 mph. 


Sunny, with a high near 89. East wind around 5 mph. 

Saturday Night

Mostly clear, with a low around 67. East wind around 5 mph. 


Sunny, with a high near 92. East wind 5 to 10 mph. 

Sunday Night

Clear, with a low around 69.


Sunny, with a high near 95.

Monday Night

Mostly clear, with a low around 72.


Sunny and hot, with a high near 98.

Tuesday Night

Partly cloudy, with a low around 74.


Mostly sunny and hot, with a high near 97.

Wednesday Night

Mostly clear, with a low around 71.


Sunny, with a high near 95.

What was the climate like in the latest reporting period?

The NWS climate summary for metro Atlanta has now been updated with July 2023 figures.

In an article entitled What is the Difference between Climate and Weather?, the National Ocean Service describes the difference as follows:

“Weather is what you see outside on any particular day. So, for example, it may be 75° degrees and sunny or it could be 20° degrees with heavy snow. That’s the weather.

“Climate is the average of that weather. For example, you can expect snow in the Northeast in January or for it to be hot and humid in the Southeast in July. This is climate. The climate record also includes extreme values such as record high temperatures or record amounts of rainfall. If you’ve ever heard your local weather person say “today we hit a record high for this day,” she is talking about climate records.

“So when we are talking about climate change, we are talking about changes in long-term averages of daily weather. In most places, weather can change from minute-to-minute, hour-to-hour, day-to-day, and season-to-season. Climate, however, is the average of weather over time and space.”

The climate report for the Atlanta area for the previous month shows how much departure from the average temperatures that month represents. The average temperature for a date is the average over a 30-year period.

DateMax TempMin TempAverageDeparture from normPrecipitation
Daily DataObservedNormalRecord HighestRecord Lowest
Max TemperatureM89101 in 200070 in 1981
Min TemperatureM7180 in 200062 in 1964
Avg TemperatureM80.290.5 in 200067.5 in 1905
PrecipitationM0.141.78 in 19980.00 in 2021
SnowfallM0.00.0 in 20220.0 in 2022
Snow DepthM0 in 20220 in 2022
HDD (base 65)M00 in 20220 in 2022
CDD (base 65)M1526 in 20003 in 1981
Month-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature91.589.697.9 in 200780.8 in 1884
Avg Min Temperature71.871.876.2 in 200765.4 in 1976
Avg Temperature81.680.787.1 in 200773.3 in 1884
Total Precipitation3.862.478.68 in 19200.02 in 1925
Total Snowfall0.00.00.0 in 20230.0 in 2023
Max Snow Depth00 in 20230 in 2023
Total HDD (base 65)002 in 18940 in 2023
Total CDD (base 65)287283402 in 2007154 in 1884
Year-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature76.374.377.5 in 201268.3 in 1912
Avg Min Temperature57.755.057.9 in 201749.1 in 1940
Avg Temperature67.064.767.7 in 201259.3 in 1940
Total Precipitation30.9032.9552.11 in 192017.51 in 2007
Total Snowfall (since July 1)0.00.0T in 20010.0 in 2023
Max Snow Depth (since July 1)0T in 19420 in 2023
Total HDD (since July 1)004 in 19360 in 2023
Total CDD (since Jan 1)152014621747 in 2019930 in 1976

Period of Record:

  • Max Temperature : 1878-10-04 to 2023-08-17
  • Min Temperature : 1878-10-04 to 2023-08-17
  • Precipitation : 1878-10-01 to 2023-08-17
  • Snowfall : 1928-12-25 to 2023-08-16
  • Snow Depth : 1928-12-25 to 2023-08-15

For much more information on the climate in our area, visit the NWS Climate FAQ for the Atlanta area.

Climate and climate change coverage in the Cobb County Courier

Extreme Heat Is Particularly Hard On Older Adults, And An Aging Population And Climate Change Are Putting Ever More People At Risk

How Climate Change Intensifies The Water Cycle, Fueling Extreme Rainfall And Flooding – The Northeast Deluge Was Just The Latest

Republicans’ Anti-ESG Attack May Be Silencing Insurers, But It Isn’t Changing Their Pro-Climate Business Decisions

KSU Professor Awarded NSF Grant To Study Effects Of Climate Change On Farming Communities In Iceland And Greenland

How California’s Ambitious New Climate Plan Could Help Speed Energy Transformation Around The World

What does the National Weather Service do?

The National Weather Service (NWS) is a part of the National Oceanic and Atmospheric Administration (NOAA).

The NWS describes its role as follows:

“The National Weather Service (NWS) provides weather, water, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy. 

“These services include Forecasts and Observations, Warnings, Impact-based Decision Support Services, and Education in an effort to build a Weather-Ready Nation. The ultimate goal is to have a society that is prepared for and responds to weather, water and climate events.”