The National Weather Service forecasts showers and thunderstorms here in Cobb County on Sunday, October 4, 2026, 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 widespread rain and embedded thunderstorms that will overspread the area this afternoon and persist through much of tonight. Any showers and storms will be efficient rainfall producers with high rainfall rates, potentially causing localized flash flooding concerns. Otherwise, severe weather is not anticipated.
71°F
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
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2 p.m. High near 76. East wind around 5 mph. Chance of precipitation is 80 percent. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers, mainly before 9 p.m. Patchy fog between 11 p.m and 3 a.m. Low around 64. Calm wind. Chance of precipitation is 80 percent. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of showers and thunderstorms, mainly between 4 p.m and 5 p.m. Partly sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 60. East wind around 5 mph.
Tuesday
Sunny, with a high near 77. East wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 75.
What was the climate like in the latest reporting period?
The NWS climate summary for metro Atlanta has now been updated with September 2026 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 Temp | Low Temp | Average | Deviation from Norm | Precipitation |
| 2026-09-01 | 94 | 76 | 85 | 6.7 | 0 |
| 2026-09-02 | 95 | 76 | 85.5 | 7.4 | 0 |
| 2026-09-03 | 96 | 77 | 86.5 | 8.5 | 0 |
| 2026-09-04 | 95 | 75 | 85 | 7.2 | 0 |
| 2026-09-05 | 97 | 73 | 85 | 7.4 | 0.28 |
| 2026-09-06 | 95 | 72 | 83.5 | 6.1 | 0 |
| 2026-09-07 | 83 | 72 | 77.5 | 0.3 | 0 |
| 2026-09-08 | 88 | 71 | 79.5 | 2.5 | 0 |
| 2026-09-09 | 89 | 71 | 80 | 3.3 | 0 |
| 2026-09-10 | 91 | 73 | 82 | 5.5 | 0 |
| 2026-09-11 | 88 | 71 | 79.5 | 3.2 | 1.44 |
| 2026-09-12 | 85 | 72 | 78.5 | 2.5 | 0.62 |
| 2026-09-13 | 90 | 72 | 81 | 5.2 | 0 |
| 2026-09-14 | 93 | 72 | 82.5 | 7 | 0 |
| 2026-09-15 | 90 | 75 | 82.5 | 7.2 | 0 |
| 2026-09-16 | 89 | 73 | 81 | 6 | 0 |
| 2026-09-17 | 90 | 69 | 79.5 | 4.8 | 0 |
| 2026-09-18 | 93 | 71 | 82 | 7.5 | 0 |
| 2026-09-19 | 92 | 71 | 81.5 | 7.3 | 0.76 |
| 2026-09-20 | 89 | 71 | 80 | 6.1 | 0 |
| 2026-09-21 | 90 | 71 | 80.5 | 6.9 | 0 |
| 2026-09-22 | 86 | 72 | 79 | 5.7 | 0 |
| 2026-09-23 | 82 | 67 | 74.5 | 1.5 | T |
| 2026-09-24 | 70 | 62 | 66 | -6.6 | T |
| 2026-09-25 | 77 | 60 | 68.5 | -3.8 | 0 |
| 2026-09-26 | 81 | 60 | 70.5 | -1.5 | 0 |
| 2026-09-27 | 81 | 55 | 68 | -3.7 | 0 |
| 2026-09-28 | 80 | 55 | 67.5 | -3.8 | 0 |
| 2026-09-29 | 84 | 60 | 72 | 1 | 0 |
| 2026-09-30 | 87 | 62 | 74.5 | 3.9 | 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.”