The National Weather Service forecasts mostly sunny skies here in Cobb County on Sunday, July 30, 2023, with a high near 92 degrees.

The National Weather Service has also issued a hazardous weather outlook for Cobb County and other parts of the region due to scattered thunderstorms that are expected this afternoon and evening.

What does the extended forecast have in store?

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

Today

A 30 percent chance of showers and thunderstorms, mainly after 3 p.m. Mostly sunny, with a high near 92. Heat index values as high as 99. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 7 p.m. Partly cloudy, with a low around 70. Northwest wind 5 to 10 mph.

Monday

Sunny, with a high near 93. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Monday Night

Mostly clear, with a low around 69. North wind 5 to 10 mph.

Tuesday

Mostly sunny, with a high near 91. North wind around 5 mph.

Tuesday Night

Partly cloudy, with a low around 69.

Wednesday

Mostly sunny, with a high near 91.

Wednesday Night

Partly cloudy, with a low around 71.

Thursday

A 40 percent chance of showers and thunderstorms, mainly after 2 p.m. Mostly sunny, with a high near 90.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 8 p.m. Partly cloudy, with a low around 72.

Friday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

Friday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Saturday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

What was the climate like in the latest reporting period?

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

The June metro Atlanta climate summary

Date	Temperature				Precipitation
	Maximum	Minimum	Average	Departure
2023-06-01	84	64	74	-1.1	0
2023-06-02	87	68	77.5	2.1	0
2023-06-03	89	67	78	2.4	0
2023-06-04	82	68	75	-0.8	0.52
2023-06-05	84	64	74	-2	0
2023-06-06	90	68	79	2.8	T
2023-06-07	90	69	79.5	3.1	0
2023-06-08	85	70	77.5	0.9	0
2023-06-09	85	66	75.5	-1.3	0
2023-06-10	87	63	75	-2	0
2023-06-11	84	67	75.5	-1.7	0.67
2023-06-12	81	66	73.5	-3.9	0.18
2023-06-13	79	63	71	-6.6	0
2023-06-14	76	67	71.5	-6.2	0.84
2023-06-15	82	68	75	-2.9	0
2023-06-16	88	71	79.5	1.4	0
2023-06-17	90	69	79.5	1.2	0
2023-06-18	86	69	77.5	-0.9	T
2023-06-19	78	67	72.5	-6.1	1
2023-06-20	85	70	77.5	-1.2	0.03
2023-06-21	76	66	71	-7.9	0.37
2023-06-22	81	65	73	-6	0.05
2023-06-23	85	69	77	-2.2	0
2023-06-24	88	67	77.5	-1.8	0
2023-06-25	92	68	80	0.6	0.67
2023-06-26	91	67	79	-0.6	0
2023-06-27	89	72	80.5	0.8	0
2023-06-28	90	70	80	0.2	0
2023-06-29	92	72	82	2.1	0
2023-06-30	90	72	81	1	0.05
Observations for each day cover the 24 hours ending at the time given below (Local Standard Time).
Max Temperature : midnight
Min Temperature : midnight
Precipitation : midnight

 

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for today’s date, July 30, 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	98 in 1986	68 in 1984
Min Temperature	M	72	78 in 1896	59 in 2014
Avg Temperature	M	81.2	87.0 in 1896	66.5 in 1984
Precipitation	M	0.13	3.51 in 1887	0.00 in 2018
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	0	0 in 2022	0 in 2022
CDD (base 65)	M	16	22 in 1986	2 in 1984
Month-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	92.7	90.1	96.8 in 1993	82.6 in 1967
Avg Min Temperature	73.3	71.8	74.5 in 1980	65.4 in 1967
Avg Temperature	83.0	80.9	85.5 in 1993	74.0 in 1967
Total Precipitation	1.73	4.62	15.66 in 1994	0.56 in 1881
Total Snowfall	0.0	0.0	T in 2001	0.0 in 2023
Max Snow Depth	0	–	T in 1942	0 in 2023
Total HDD (base 65)	0	0	4 in 1892	0 in 2023
Total CDD (base 65)	527	478	622 in 1993	278 in 1967
Year-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	74.9	72.9	76.5 in 2012	66.8 in 1895
Avg Min Temperature	56.4	53.5	56.7 in 2017	47.2 in 1940
Avg Temperature	65.7	63.2	66.6 in 2012	57.5 in 1940
Total Precipitation	27.04	30.35	47.07 in 1912	16.36 in 1986
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)	0	0	4 in 1892	0 in 2023
Total CDD (since Jan 1)	1192	1162	1443 in 2012	702 in 1961

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.”