The National Weather Service forecasts mostly cloudy skies here in Cobb County on Thursday, July 25, 2024, with a high near 86 degrees.

The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to scattered to numerous thunderstorms that will occur this afternoon through the evening. Localized flash flooding is the primary concern, especially across eastern Georgia where soils are saturated. The strongest storms may also produce frequent cloud- to-ground lightning and gusty winds.

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

A 50 percent chance of showers and thunderstorms. Patchy fog between 8 a.m and 10 a.m. Otherwise, mostly cloudy, with a high near 86. Calm wind becoming northwest around 5 mph in the afternoon.

Tonight

A 20 percent chance of showers and thunderstorms before 11 p.m. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening.

Friday

A 40 percent chance of showers and thunderstorms, mainly after 1 p.m. Partly sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.

Friday Night

A 30 percent chance of showers and thunderstorms before 2 a.m. Mostly cloudy, with a low around 70. Northwest wind around 5 mph becoming calm.

Saturday

A chance of showers and thunderstorms before 2 p.m, then showers likely and possibly a thunderstorm between 2 p.m and 5 p.m, then showers and thunderstorms likely after 5 p.m. Partly sunny, with a high near 88. Chance of precipitation is 70 percent.

Saturday Night

Showers and thunderstorms likely, mainly before 8 p.m. Mostly cloudy, with a low around 71. Chance of precipitation is 60 percent.

Sunday

Showers and thunderstorms likely, mainly after 2 p.m. Mostly cloudy, with a high near 87. Chance of precipitation is 70 percent.

Sunday Night

Showers and thunderstorms likely, mainly before 8 p.m. Mostly cloudy, with a low around 71. Chance of precipitation is 60 percent.

Monday

Showers likely and possibly a thunderstorm before 2 p.m, then showers and thunderstorms likely after 2 p.m. Partly sunny, with a high near 87. Chance of precipitation is 70 percent.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60 percent.

Tuesday

Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 60 percent.

Tuesday Night

Showers and thunderstorms likely. Partly cloudy, with a low around 71. Chance of precipitation is 60 percent.

Wednesday

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 25, 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	102 in 1995	74 in 1882
Min Temperature	M	72	78 in 2010	60 in 1882
Avg Temperature	M	81.3	89.0 in 1995	67.0 in 1882
Precipitation	M	0.14	3.34 in 1945	0.00 in 2022
Snowfall	M	0.0	0.0 in 2023	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	24 in 1995	2 in 1882
Month-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	91.6	90.1	96.5 in 1993	82.1 in 1967
Avg Min Temperature	74.4	71.7	75.4 in 1980	64.9 in 1967
Avg Temperature	83.0	80.9	85.7 in 1980	73.5 in 1967
Total Precipitation	8.09	3.96	14.44 in 1994	0.17 in 1995
Total Snowfall	0.0	0.0	T in 2001	0.0 in 2024
Max Snow Depth	0	–	T in 1942	0 in 2024
Total HDD (base 65)	0	0	4 in 1892	0 in 2024
Total CDD (base 65)	440	397	525 in 1980	218 in 1967
Year-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	74.7	72.5	76.0 in 2012	66.3 in 1895
Avg Min Temperature	55.7	53.0	56.3 in 2017	46.5 in 1940
Avg Temperature	65.2	62.7	66.1 in 2012	56.9 in 1940
Total Precipitation	36.81	29.69	47.07 in 1912	16.36 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	–	T in 1942	0 in 2024
Total HDD (since July 1)	0	0	4 in 1892	0 in 2024
Total CDD (since Jan 1)	1345	1081	1345 in 2024	630 in 1961

Period of Record:

• Max Temperature : 1878-10-04 to 2024-07-24
• Min Temperature : 1878-10-04 to 2024-07-24
• Precipitation : 1878-10-01 to 2024-07-24
• Snowfall : 1928-12-25 to 2024-07-23
• Snow Depth : 1928-12-25 to 2024-07-23

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.”