The National Weather Service forecasts mostly cloudy skies here in Cobb County on Saturday, April 27, 2024, with a high near 78 degrees.

Tonight it is expected to be partly cloudy, with an overnight low of around 59 degrees.

What does the extended forecast have in store?

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

Today

Mostly cloudy, with a high near 78. Southeast wind around 15 mph, with gusts as high as 20 mph. 

Tonight

Partly cloudy, with a low around 59. Southeast wind 10 to 15 mph. 

Sunday

Mostly sunny, with a high near 80. Southeast wind 10 to 15 mph. 

Sunday Night

Mostly clear, with a low around 58. Southeast wind around 10 mph, with gusts as high as 15 mph. 

Monday

Sunny, with a high near 83. South wind around 10 mph, with gusts as high as 15 mph. 

Monday Night

A 30 percent chance of showers and thunderstorms after 2 a.m. Mostly cloudy, with a low around 62.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly before 2 p.m. Mostly sunny, with a high near 83.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

Sunny, with a high near 87.

Wednesday Night

Partly cloudy, with a low around 62.

Thursday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

Thursday Night

A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.

Friday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

What was the climate like in the latest reporting period?

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

---

---

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	Low	Average	Departure from norm	Precipitation
2024-03-01	49	40	44.5	-7.4	1.11
2024-03-02	62	42	52	-0.2	T
2024-03-03	70	49	59.5	7.1	0
2024-03-04	63	57	60	7.3	T
2024-03-05	61	55	58	5.1	1.02
2024-03-06	65	56	60.5	7.3	2.36
2024-03-07	76	53	64.5	11.1	0
2024-03-08	66	59	62.5	8.8	1.45
2024-03-09	69	52	60.5	6.6	0.65
2024-03-10	61	43	52	-2.2	0
2024-03-11	67	38	52.5	-1.9	0
2024-03-12	74	44	59	4.4	0
2024-03-13	75	47	61	6.1	0
2024-03-14	81	52	66.5	11.4	0
2024-03-15	72	61	66.5	11.1	0.36
2024-03-16	75	57	66	10.4	0
2024-03-17	67	53	60	4.1	0.02
2024-03-18	61	40	50.5	-5.6	0
2024-03-19	60	33	46.5	-9.8	0
2024-03-20	74	42	58	1.4	0
2024-03-21	77	51	64	7.2	0
2024-03-22	65	56	60.5	3.4	0.25
2024-03-23	69	50	59.5	2.2	0.04
2024-03-24	65	43	54	-3.5	0
2024-03-25	64	47	55.5	-2.3	0
2024-03-26	62	53	57.5	-0.5	0.72
2024-03-27	74	53	63.5	5.2	T
2024-03-28	68	50	59	0.5	0
2024-03-29	72	43	57.5	-1.2	0
2024-03-30	77	49	63	4	0
2024-03-31	80	56	68	8.8	0

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for today’s date, April 27, 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	77	93 in 1986	51 in 1910
Min Temperature	M	56	67 in 2011	38 in 1978
Avg Temperature	M	66.2	77.0 in 1994	47.0 in 1910
Precipitation	M	0.13	2.12 in 1964	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	2	18 in 1910	0 in 2021
CDD (base 65)	M	3	12 in 1994	0 in 2023
Month-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	75.1	73.4	78.6 in 1994	61.1 in 1901
Avg Min Temperature	54.4	52.1	58.0 in 1925	43.7 in 1907
Avg Temperature	64.7	62.8	67.4 in 1925	52.9 in 1907
Total Precipitation	5.67	3.45	11.86 in 1979	0.27 in 1915
Total Snowfall	0.0	0.0	T in 2022	0.0 in 2024
Max Snow Depth	0	–	0 in 2024	0 in 2024
Total HDD (base 65)	79	114	324 in 1907	36 in 1981
Total CDD (base 65)	79	53	138 in 1925	1 in 1983
Year-to-Date Summary	Observed	Normal	Record Highest	Record Lowest
Avg Max Temperature	64.7	62.6	67.9 in 2017	54.6 in 1940
Avg Min Temperature	45.0	42.8	48.1 in 1880	34.9 in 1940
Avg Temperature	54.9	52.7	57.9 in 2017	44.8 in 1940
Total Precipitation	23.97	17.27	34.32 in 1881	7.95 in 1986
Total Snowfall (since July 1)	T	2.2	10.9 in 1936	0.0 in 2019
Max Snow Depth (since July 1)	0	–	8 in 1940	0 in 2024
Total HDD (since July 1)	2040	2515	3819 in 1977	1666 in 2017
Total CDD (since Jan 1)	89	72	171 in 2012	4 in 1983

Period of Record:

• Max Temperature : 1878-10-04 to 2024-04-26
• Min Temperature : 1878-10-04 to 2024-04-26
• Precipitation : 1878-10-01 to 2024-04-26
• Snowfall : 1928-12-25 to 2024-04-25
• Snow Depth : 1928-12-25 to 2024-04-25

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.”