The National Weather Service forecasts mostly sunny skies here in Cobb County on Friday, July 5, 2024, with a high near 94 degrees.

The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to a scattered to numerous showers and thunderstorms that are expected, especially during the afternoon and evening. Heat index values in the 100 to 107 degree range are also anticipated today, and a Heat Advisory will be in effect from 11 a.m to 8 p.m for all areas with the exception of the mountains of northeast Georgia.

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

Showers and thunderstorms likely, mainly after 4 p.m. Mostly sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 60 percent. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms, mainly before 9 p.m. Low around 74. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80 percent. New rainfall amounts between a quarter and half of an inch possible.

Saturday

A chance of showers, then showers and thunderstorms likely after 11 a.m. Partly sunny, with a high near 93. Heat index values as high as 99. Northwest wind 5 to 10 mph. Chance of precipitation is 60 percent.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly before 2 a.m. Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm in the evening.

Sunday

A chance of showers, with thunderstorms also possible after 11 a.m. Mostly sunny, with a high near 93. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50 percent.

Sunday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

Monday

Showers and thunderstorms likely, mainly after 2 p.m. Partly sunny, with a high near 91. Chance of precipitation is 70 percent.

Monday Night

Showers and thunderstorms likely, mainly before 8 p.m. Mostly cloudy, with a low around 72. Chance of precipitation is 60 percent.

Tuesday

Showers and thunderstorms likely, mainly after 2 p.m. Partly sunny, with a high near 92. Chance of precipitation is 60 percent.

Tuesday Night

Showers and thunderstorms likely, mainly before 8 p.m. Partly cloudy, with a low around 73. Chance of precipitation is 60 percent.

Wednesday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Wednesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

Thursday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

What was the climate like in the latest reporting period?

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

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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	Max	Min	Average	Departure from norm	Precipitation
2024-06-01	78	65	71.5	-3.6	0
2024-06-02	85	67	76	0.6	0.06
2024-06-03	89	69	79	3.4	T
2024-06-04	86	70	78	2.2	T
2024-06-05	86	72	79	3	0.17
2024-06-06	85	70	77.5	1.3	0.1
2024-06-07	88	70	79	2.6	0
2024-06-08	87	63	75	-1.6	0
2024-06-09	93	70	81.5	4.7	0
2024-06-10	85	69	77	0	0.4
2024-06-11	87	64	75.5	-1.7	0
2024-06-12	89	71	80	2.6	0
2024-06-13	90	72	81	3.4	0
2024-06-14	95	72	83.5	5.8	0
2024-06-15	97	76	86.5	8.6	0.02
2024-06-16	96	75	85.5	7.4	0
2024-06-17	93	75	84	5.7	T
2024-06-18	91	73	82	3.6	0
2024-06-19	89	71	80	1.4	0
2024-06-20	90	73	81.5	2.8	0
2024-06-21	93	71	82	3.1	0
2024-06-22	98	74	86	7	0
2024-06-23	98	77	87.5	8.3	0
2024-06-24	97	75	86	6.7	0.21
2024-06-25	98	72	85	5.6	0
2024-06-26	100	75	87.5	7.9	0
2024-06-27	91	75	83	3.3	T
2024-06-28	91	75	83	3.2	0.13
2024-06-29	91	76	83.5	3.6	0.65
2024-06-30	97	77	87	7	0

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for today’s date, July 5, 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	90	100 in 2012	70 in 1915
Min Temperature	M	71	78 in 1980	59 in 1933
Avg Temperature	M	80.5	87.0 in 2012	67.0 in 1915
Precipitation	M	0.17	3.34 in 1994	0.00 in 2021
Snowfall	M	0.0	T in 2001	0.0 in 2023
Snow Depth	M	–	0 in 2023	0 in 2023
HDD (base 65)	M	0	0 in 2023	0 in 2023
CDD (base 65)	M	16	22 in 2012	2 in 1915
Month-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	94.0	89.5	99.0 in 2012	78.2 in 1976
Avg Min Temperature	77.0	71.1	77.0 in 2024	63.6 in 1924
Avg Temperature	85.5	80.3	86.1 in 2012	71.0 in 1976
Total Precipitation	0.01	0.85	7.25 in 1994	0.00 in 2014
Total Snowfall	0.0	0.0	T in 2001	0.0 in 2024
Max Snow Depth	0	–	0 in 2024	0 in 2024
Total HDD (base 65)	0	0	0 in 2024	0 in 2024
Total CDD (base 65)	83	77	106 in 2012	31 in 1976
Year-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	73.0	70.6	74.2 in 2012	64.2 in 1895
Avg Min Temperature	53.8	51.0	54.5 in 1880	44.3 in 1940
Avg Temperature	63.4	60.8	64.3 in 2012	54.8 in 1940
Total Precipitation	28.73	26.58	44.55 in 1912	13.28 in 1986
Total Snowfall (since July 1)	0.0	0.0	T in 2001	0.0 in 2024
Max Snow Depth (since July 1)	0	–	0 in 2024	0 in 2024
Total HDD (since July 1)	0	0	0 in 2024	0 in 2024
Total CDD (since Jan 1)	988	761	988 in 2024	405 in 1997

Period of Record:

• Max Temperature : 1878-10-04 to 2024-07-04
• Min Temperature : 1878-10-04 to 2024-07-04
• Precipitation : 1878-10-01 to 2024-07-04
• Snowfall : 1928-12-25 to 2024-07-04
• Snow Depth : 1928-12-25 to 2024-07-01

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.”