The National Weather Service forecasts mostly cloudy skies here in Cobb County on Thursday, October 12, 2023, with a high near 66 degrees.

Tonight it is expected to be mostly cloudy, with an overnight low of around 56 degrees.

What does the extended forecast have in store?

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

Today

A 40 percent chance of showers, mainly before 8 a.m. Mostly cloudy, with a high near 66. East wind around 15 mph, with gusts as high as 30 mph. 

Tonight

A 10 percent chance of showers after 5 a.m. Mostly cloudy, with a low around 56. East wind around 10 mph, with gusts as high as 15 mph. 

Friday

Showers likely, mainly between 10 a.m and 1 p.m. Mostly cloudy, with a high near 64. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60 percent.

Friday Night

A 40 percent chance of showers. Mostly cloudy, with a low around 57. East wind 5 to 10 mph. 

Saturday

Partly sunny, with a high near 75. Light west wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph. 

Saturday Night

Mostly clear, with a low around 53.

Sunday

Mostly sunny, with a high near 62.

Sunday Night

Partly cloudy, with a low around 46.

Monday

Sunny, with a high near 60.

Monday Night

Mostly clear, with a low around 42.

Tuesday

Sunny, with a high near 62.

Tuesday Night

Mostly clear, with a low around 42.

Wednesday

Sunny, with a high near 64.

What was the climate like in the latest reporting period?

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

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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.

Date	Maximum Temperature	Minimum Temparature	Average Temperature	Depature from norm	Precipitation
2023-09-01	85	73	79	0.7	0
2023-09-02	83	68	75.5	-2.6	0
2023-09-03	87	67	77	-1	0
2023-09-04	91	69	80	2.2	0
2023-09-05	90	72	81	3.4	0
2023-09-06	91	73	82	4.6	0
2023-09-07	92	74	83	5.8	0
2023-09-08	86	66	76	-1	0
2023-09-09	86	69	77.5	0.8	T
2023-09-10	89	67	78	1.5	T
2023-09-11	93	70	81.5	5.2	0
2023-09-12	93	72	82.5	6.5	T
2023-09-13	85	71	78	2.2	0.19
2023-09-14	81	70	75.5	0	0.09
2023-09-15	74	68	71	-4.3	0.03
2023-09-16	71	66	68.5	-6.5	0.46
2023-09-17	82	66	74	-0.7	0.52
2023-09-18	81	61	71	-3.5	0
2023-09-19	83	62	72.5	-1.7	0
2023-09-20	81	64	72.5	-1.4	0
2023-09-21	83	66	74.5	0.9	0
2023-09-22	82	66	74	0.7	0
2023-09-23	86	61	73.5	0.5	0
2023-09-24	86	60	73	0.4	0
2023-09-25	89	62	75.5	3.2	0
2023-09-26	84	71	77.5	5.5	0
2023-09-27	75	65	70	-1.7	0
2023-09-28	78	61	69.5	-1.8	0
2023-09-29	86	63	74.5	3.5	0
2023-09-30	87	65	76	5.4	0

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for today’s date, October 12, allowing a comparison to current weather. Simply put, it helps you see what the weather would typically be like on this day according to historical data.

Daily Data	Observed	Normal	Record Highest	Record Lowest
Max Temperature	M	76	87 in 2017	55 in 1888
Min Temperature	M	57	70 in 2020	36 in 1906
Avg Temperature	M	66.2	77.0 in 2017	46.5 in 1906
Precipitation	M	0.09	2.50 in 2009	0.00 in 2021
Snowfall	M	0.0	0.0 in 2022	0.0 in 2022
Snow Depth	M	–	0 in 2022	0 in 2022
HDD (base 65)	M	2	18 in 1906	0 in 2022
CDD (base 65)	M	3	12 in 2017	0 in 2018
Month-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	79.0	77.7	86.4 in 1884	65.7 in 1885
Avg Min Temperature	59.2	58.8	68.0 in 1884	46.4 in 1974
Avg Temperature	69.1	68.3	77.2 in 1884	58.5 in 1888
Total Precipitation	0.71	1.32	8.89 in 1995	0.00 in 2010
Total Snowfall	0.0	0.0	0.0 in 2023	0.0 in 2023
Max Snow Depth	0	–	0 in 2023	0 in 2023
Total HDD (base 65)	13	16	81 in 1964	0 in 2021
Total CDD (base 65)	62	55	151 in 1884	0 in 1992
Year-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	78.1	76.1	78.9 in 2019	69.9 in 1885
Avg Min Temperature	59.6	57.0	60.9 in 1878	51.1 in 1940
Avg Temperature	68.8	66.6	69.5 in 2019	61.6 in 1940
Total Precipitation	34.28	39.92	59.18 in 1929	0.22 in 1878
Total Snowfall (since July 1)	0.0	0.0	T in 2001	0.0 in 2023
Max Snow Depth (since July 1)	0	–	T in 1942	0 in 2023
Total HDD (since July 1)	13	21	109 in 1888	0 in 2019
Total CDD (since Jan 1)	2177	2005	2621 in 2019	26 in 1878

Period of Record:

• Max Temperature : 1878-10-04 to 2023-10-11
• Min Temperature : 1878-10-04 to 2023-10-11
• Precipitation : 1878-10-01 to 2023-10-11
• Snowfall : 1928-12-25 to 2023-10-10
• Snow Depth : 1928-12-25 to 2023-10-10

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

As climate change warms rivers, they are running out of breath – and so could the plants and animals they harbor

Looking for a US ‘climate haven’ away from heat and disaster risks? Good luck finding one

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

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.”