Cobb County weather forecast for Tuesday, April 30, 2024

Cobb weather June 27: Photo of cloudy skies above a residential street

The National Weather Service forecasts showers and thunderstorms here in Cobb County on Tuesday, April 30, 2024, with a high near 76 degrees.

The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to scattered thunderstorms that will move into the area this morning into this afternoon affecting north and central Georgia. Strong storms could also produce strong winds, frequent lightning and heavy rain.

What does the extended forecast have in store?

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


Showers and thunderstorms likely before 11 a.m, then showers and possibly a thunderstorm between 11 a.m and 1 p.m, then showers and thunderstorms likely after 1 p.m. High near 76. South wind 5 to 10 mph. Chance of precipitation is 80 percent. New rainfall amounts between a quarter and half of an inch possible. 

Tuesday Night

A 30 percent chance of showers and thunderstorms, mainly before 7 p.m. Partly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm. 


Sunny, with a high near 83. Northwest wind 5 to 10 mph. 

Wednesday Night

Mostly clear, with a low around 59. Northwest wind around 5 mph becoming northeast after midnight. 


Sunny, with a high near 86.

Thursday Night

Mostly clear, with a low around 61.


A 20 percent chance of showers and thunderstorms after 2 p.m. Mostly sunny, with a high near 84.

Friday Night

A 40 percent chance of showers and thunderstorms, mainly after 8 p.m. Mostly cloudy, with a low around 63.


A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.

Saturday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.


A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

Sunday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.


A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

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.

DateHighLowAverageDeparture from normPrecipitation

Climate Almanac for metro Atlanta

This almanac provides information on past climate conditions for today’s date, April 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 DataObservedNormalRecord HighestRecord Lowest
Max TemperatureM7789 in 198756 in 1999
Min TemperatureM5769 in 201740 in 1969
Avg TemperatureM67.078.0 in 197051.0 in 1999
PrecipitationM0.123.19 in 19530.00 in 2022
SnowfallM0.00.0 in 20230.0 in 2023
Snow DepthM0 in 20230 in 2023
HDD (base 65)M214 in 19990 in 2022
CDD (base 65)M413 in 20160 in 2023
Month-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature75.473.879.2 in 199463.0 in 1901
Avg Min Temperature55.052.558.0 in 201745.1 in 1961
Avg Temperature65.263.267.8 in 201754.3 in 1907
Total Precipitation5.673.8111.86 in 19790.35 in 1915
Total Snowfall0.00.0T in 20220.0 in 2024
Max Snow Depth00 in 20240 in 2024
Total HDD (base 65)79120324 in 190736 in 1981
Total CDD (base 65)9264141 in 19944 in 2000
Year-to-Date SummaryObservedNormalRecord HighestRecord Lowest
Avg Max Temperature65.163.068.3 in 201755.0 in 1940
Avg Min Temperature45.443.148.5 in 201735.2 in 1940
Avg Temperature55.253.058.4 in 201745.1 in 1940
Total Precipitation23.9717.6334.32 in 18817.96 in 1986
Total Snowfall (since July 1)T2.210.9 in 19360.0 in 2019
Max Snow Depth (since July 1)08 in 19400 in 2024
Total HDD (since July 1)204025213821 in 19771666 in 2017
Total CDD (since Jan 1)10283201 in 20127 in 2000

Period of Record:

  • Max Temperature : 1878-10-04 to 2024-04-29
  • Min Temperature : 1878-10-04 to 2024-04-29
  • Precipitation : 1878-10-01 to 2024-04-29
  • Snowfall : 1928-12-25 to 2024-04-29
  • Snow Depth : 1928-12-25 to 2024-04-29

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.”