The National Weather Service forecasts mostly sunny and hot skies here in Cobb County on Wednesday, June 25, 2025, with a high near 97 degrees.

The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to hazardous heat that is expected in north and central Georgia today. Heat index values will peak between 100 and 109 degrees between noon and 8 p.m. Isolated thunderstorms are also expected after 1 p.m today with more widespread storms likely between 6 p.m today and 4 a.m Thursday.

Bonus for the more weather-curious among you … To read an article about interpreting a weather news report with some of the typical terminology defined, follow this link.

To read an article about interpreting a weather news report, with some of the typical terminology defined, follow this link.

What does the extended forecast have in store?

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

Today

Mostly sunny and hot, with a high near 97. Heat index values as high as 104. Calm wind. 

Tonight

A chance of showers and thunderstorms, mainly before 1 a.m, then a slight chance of thunderstorms after 5 a.m. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30 percent.

Thursday

A slight chance of showers, then showers and thunderstorms likely after 11 a.m. Mostly sunny, with a high near 94. Heat index values as high as 102. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. 

Thursday Night

Showers and thunderstorms likely, mainly before 8 p.m. Partly cloudy, with a low around 70. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60 percent.

Friday

A slight 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. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph. Chance of precipitation is 60 percent.

Friday Night

Showers and thunderstorms likely before 11 p.m, then a chance of showers between 11 p.m and 2 a.m. Partly cloudy, with a low around 71. Chance of precipitation is 60 percent.

Saturday

A slight chance of thunderstorms, then showers and thunderstorms likely after 8 a.m. Mostly sunny, with a high near 91. Chance of precipitation is 60 percent.

Saturday Night

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

Sunday

Showers and thunderstorms likely after 2 p.m. Mostly sunny, with a high near 91. Chance of precipitation is 60 percent.

Sunday Night

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

Monday

Showers and thunderstorms likely. Mostly sunny, with a high near 91. Chance of precipitation is 70 percent.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60 percent.

Tuesday

Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 70 percent.

What was the climate like in the latest reporting period?

The NWS climate summary for metro Atlanta has now been updated with May 2025 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	High temp	Low temp	Avg temp	Deviation from norm	Precipitation
2025-05-01	81	68	74.5	7.2	0.05
2025-05-02	86	63	74.5	7	0.16
2025-05-03	70	57	63.5	-4.3	0.81
2025-05-04	72	54	63	-5.1	0
2025-05-05	73	51	62	-6.3	0
2025-05-06	80	55	67.5	-1.1	0
2025-05-07	72	60	66	-2.9	0.25
2025-05-08	85	63	74	4.8	0
2025-05-09	84	64	74	4.6	0
2025-05-10	73	54	63.5	-6.2	0.58
2025-05-11	65	58	61.5	-8.5	0.81
2025-05-12	80	65	72.5	2.3	0.04
2025-05-13	78	62	70	-0.5	0.09
2025-05-14	84	66	75	4.3	0
2025-05-15	87	67	77	6	0
2025-05-16	89	72	80.5	9.2	0
2025-05-17	81	72	76.5	5	0.1
2025-05-18	81	66	73.5	1.7	0.22
2025-05-19	89	71	80	8	T
2025-05-20	88	72	80	7.7	0
2025-05-21	83	66	74.5	2	0.82
2025-05-22	85	62	73.5	0.7	0
2025-05-23	81	63	72	-1	0
2025-05-24	82	64	73	-0.3	0.01
2025-05-25	80	65	72.5	-1	0.57
2025-05-26	83	67	75	1.2	1.3
2025-05-27	72	62	67	-7	0.35
2025-05-28	83	61	72	-2.2	0.2
2025-05-29	73	66	69.5	-5	0.61
2025-05-30	78	62	70	-4.7	0.09
2025-05-31	81	57	69	-5.9	0

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.”