Cobb climate almanac & weather forecast for Friday, October 18, 2024

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, October 18, 2024, with a high near 69 degrees.

Tonight it is expected to be clear, with an overnight low of around 44 degrees.

What you will read in this article

  1. The extended forecast for Cobb County
  2. Last month’s climate summary for the metro Atlanta region
  3. The climate almanac for metro Atlanta
  4. What the National Weather Service is, and what it does

What does the extended forecast have in store?

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

Today

Sunny, with a high near 69. Light east wind increasing to 5 to 10 mph in the morning.

Tonight

Clear, with a low around 44. East wind around 5 mph.

Saturday

Sunny, with a high near 71. East wind 5 to 10 mph.

Saturday Night

Clear, with a low around 44. Northeast wind around 5 mph becoming calm in the evening.

Sunday

Sunny, with a high near 76. Calm wind becoming northeast around 5 mph in the afternoon.

Sunday Night

Clear, with a low around 46.

Monday

Sunny, with a high near 77.

Monday Night

Clear, with a low around 48.

Tuesday

Sunny, with a high near 76.

Tuesday Night

Clear, with a low around 50.

Wednesday

Sunny, with a high near 78.

Wednesday Night

Mostly clear, with a low around 53.

Thursday

Sunny, with a high near 77.

What was the climate like in the latest reporting period?

The NWS climate summary for metro Atlanta has now been updated with September 2024 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.

DateMaxMinAvgDeparture from normPrecipitation
2024-09-019674856.70
2024-09-029472834.90.7
2024-09-0385717800
2024-09-04856575-2.80
2024-09-05846976.5-1.10
2024-09-06807075-2.40.02
2024-09-07876877.50.30.01
2024-09-08846474-30
2024-09-09856776-0.70
2024-09-10866575.5-10
2024-09-11786772.5-3.80.09
2024-09-12746770.5-5.50.23
2024-09-13756871.5-4.30.03
2024-09-14746971.5-40.07
2024-09-15797074.5-0.8T
2024-09-1683677500
2024-09-17846273-1.70
2024-09-18846775.510
2024-09-19896878.54.30
2024-09-209270817.10
2024-09-219470828.40
2024-09-22977284.511.20
2024-09-23967384.511.50
2024-09-24937483.510.9T
2024-09-258666763.73.42
2024-09-26746670-24.32
2024-09-27756670.5-1.23.38
2024-09-28786571.50.20
2024-09-2980667320.02
2024-09-30816673.52.90

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for October 18, allowing comparisons to current weather.

Simply put, it helps you see what the weather would typically be like on this day, according to historical data.

Daily DataObservedNormalRecord HighestRecord Lowest
Max TemperatureM7486 in 201654 in 2022
Min TemperatureM5468 in 200732 in 1948
Avg TemperatureM63.975.5 in 198443.5 in 1948
PrecipitationM0.102.39 in 19370.00 in 2023
SnowfallM0.00.0 in 20230.0 in 2023
Snow DepthM0 in 20230 in 2023
HDD (base 65)M321 in 19480 in 2018
CDD (base 65)M211 in 19840 in 2023
Month-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature78.876.783.5 in 201866.2 in 1885
Avg Min Temperature59.157.665.9 in 187947.6 in 1978
Avg Temperature68.967.174.2 in 201858.3 in 1888
Total Precipitation0.001.939.78 in 19950.00 in 2024
Total Snowfall0.00.00.0 in 20240.0 in 2024
Max Snow Depth00 in 20240 in 2024
Total HDD (base 65)3232125 in 19770 in 1962
Total CDD (base 65)10370173 in 20182 in 1885
Year-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature78.176.078.7 in 201969.9 in 1885
Avg Min Temperature59.456.959.9 in 201951.1 in 1940
Avg Temperature68.766.569.3 in 201961.7 in 1940
Total Precipitation55.8340.5359.18 in 19290.47 in 1878
Total Snowfall (since July 1)0.00.0T in 20010.0 in 2024
Max Snow Depth (since July 1)0T in 19420 in 2024
Total HDD (since July 1)3237150 in 18884 in 2018
Total CDD (since Jan 1)244120202626 in 201932 in 1878

Period of Record:

  • Max Temperature : 1878-10-04 to 2024-10-17
  • Min Temperature : 1878-10-04 to 2024-10-17
  • Precipitation : 1878-10-01 to 2024-10-17
  • Snowfall : 1928-12-25 to 2024-10-16
  • Snow Depth : 1928-12-25 to 2024-10-08

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

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.”

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