The National Weather Service forecasts mostly sunny skies here in Cobb County on Tuesday, August 15, 2023, with a high near 88 degrees.
The National Weather Service has also issued a hazardous weather outlook for Cobb County and other parts of the region due to numerous showers and thunderstorms that are expected today into tonight as a cold front advances through north and central Georgia. A Heat Advisory is also in effect from 10 a.m. until 8 p.m. EDT for portions of central and east Georgia.
What does the extended forecast have in store?
This forecast is centered on Dobbins Air Reserve Base in Marietta.
Today
A 40 percent chance of showers and thunderstorms, mainly between 2 p.m and 5 p.m. Mostly sunny, with a high near 88. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 63. Northwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 86. Northwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 64. Northwest wind around 5 mph.
Thursday
Sunny, with a high near 87. West wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 94.
What was the climate like in the latest reporting period?
The NWS climate summary for metro Atlanta has now been updated with July 2023 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 | Max Temp | Min Temp | Average | Departure from norm | Precipitation |
| 2023-07-01 | 96 | 73 | 84.5 | 4.4 | 0 |
| 2023-07-02 | 93 | 73 | 83 | 2.8 | 0.61 |
| 2023-07-03 | 89 | 72 | 80.5 | 0.2 | 0.01 |
| 2023-07-04 | 92 | 73 | 82.5 | 2.1 | 0 |
| 2023-07-05 | 88 | 75 | 81.5 | 1 | 0 |
| 2023-07-06 | 93 | 73 | 83 | 2.4 | 0 |
| 2023-07-07 | 92 | 74 | 83 | 2.4 | T |
| 2023-07-08 | 92 | 72 | 82 | 1.3 | 0 |
| 2023-07-09 | 91 | 71 | 81 | 0.2 | 0.19 |
| 2023-07-10 | 87 | 70 | 78.5 | -2.3 | 0.73 |
| 2023-07-11 | 90 | 71 | 80.5 | -0.4 | 0 |
| 2023-07-12 | 92 | 74 | 83 | 2 | T |
| 2023-07-13 | 92 | 74 | 83 | 2 | 0 |
| 2023-07-14 | 93 | 75 | 84 | 3 | 0 |
| 2023-07-15 | 93 | 77 | 85 | 3.9 | 0 |
| 2023-07-16 | 94 | 73 | 83.5 | 2.4 | 0 |
| 2023-07-17 | 91 | 71 | 81 | -0.1 | 0 |
| 2023-07-18 | 93 | 73 | 83 | 1.8 | T |
| 2023-07-19 | 94 | 76 | 85 | 3.8 | T |
| 2023-07-20 | 96 | 74 | 85 | 3.8 | T |
| 2023-07-21 | 94 | 72 | 83 | 1.8 | 0.13 |
| 2023-07-22 | 87 | 71 | 79 | -2.2 | 0.05 |
| 2023-07-23 | 92 | 72 | 82 | 0.8 | 0 |
| 2023-07-24 | 93 | 72 | 82.5 | 1.2 | 0 |
| 2023-07-25 | 95 | 71 | 83 | 1.7 | T |
| 2023-07-26 | 96 | 76 | 86 | 4.8 | 0 |
| 2023-07-27 | 97 | 75 | 86 | 4.8 | 0 |
| 2023-07-28 | 94 | 77 | 85.5 | 4.3 | 0.01 |
| 2023-07-29 | 98 | 77 | 87.5 | 6.3 | 0 |
| 2023-07-30 | 94 | 75 | 84.5 | 3.3 | 0 |
| 2023-07-31 | 97 | 74 | 85.5 | 4.3 | 0 |
Climate Almanac for metro Atlanta
This almanac provides information on past climate conditions for today’s date, August 15, 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 | 89 | 102 in 2007 | 69 in 1890 |
| Min Temperature | M | 72 | 77 in 1908 | 62 in 1962 |
| Avg Temperature | M | 80.4 | 89.0 in 2007 | 67.0 in 1890 |
| Precipitation | M | 0.14 | 2.07 in 1920 | 0.00 in 2021 |
| 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 | 15 | 24 in 2007 | 2 in 1890 |
| Month-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
| Avg Max Temperature | 92.4 | 89.8 | 97.6 in 2007 | 80.4 in 1884 |
| Avg Min Temperature | 72.3 | 71.9 | 76.4 in 2007 | 65.3 in 1976 |
| Avg Temperature | 82.3 | 80.9 | 87.0 in 2007 | 73.2 in 1884 |
| Total Precipitation | 3.23 | 2.04 | 8.29 in 1920 | 0.02 in 2007 |
| Total Snowfall | 0.0 | 0.0 | 0.0 in 2023 | 0.0 in 2023 |
| Max Snow Depth | 0 | – | 0 in 2023 | 0 in 2023 |
| Total HDD (base 65) | 0 | 0 | 2 in 1894 | 0 in 2023 |
| Total CDD (base 65) | 245 | 238 | 334 in 2007 | 127 in 1884 |
| Year-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
| Avg Max Temperature | 76.2 | 74.1 | 77.4 in 2012 | 68.1 in 1912 |
| Avg Min Temperature | 57.6 | 54.8 | 57.7 in 2017 | 48.8 in 1940 |
| Avg Temperature | 66.9 | 64.5 | 67.5 in 2012 | 59.0 in 1940 |
| Total Precipitation | 30.27 | 32.52 | 51.72 in 1920 | 17.26 in 2007 |
| 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 1936 | 0 in 2023 |
| Total CDD (since Jan 1) | 1478 | 1416 | 1688 in 2019 | 898 in 1976 |
Period of Record:
- Max Temperature : 1878-10-04 to 2023-08-14
- Min Temperature : 1878-10-04 to 2023-08-14
- Precipitation : 1878-10-01 to 2023-08-14
- Snowfall : 1928-12-25 to 2023-08-14
- Snow Depth : 1928-12-25 to 2023-08-14
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.”
