The National Weather Service predicts mainly cloudy weather in Cobb County on Friday, July 19, 2024, with a high near 85 degrees.
The National Weather Service has issued a hazardous weather outlook for Cobb County and the rest of the region as scattered thunderstorms will develop in the area this afternoon and evening. The strongest storms could produce frequent lightning, wind gusts approaching 40 mph and heavy rainfall.
What you will read in this article
- Extended Forecast for Cobb County
- Metro Atlanta climate summary for last month
- Metro Atlanta Climate Almanac
- What is the National Weather Service and what it does
What does the extended forecast include?
The forecast is centered on Dobbins Air Force Reserve Base in Marietta.
today
Showers and thunderstorms possible, mainly after 2pm. , wind speed about 5 mph. Chance of precipitation is 70%. New rainfall amounts range from one-tenth to one-quarter of an inch, with higher amounts possible during thunderstorms.
tonight
Showers and thunderstorms possible, mostly cloudy before 9 p.m., with low around 69 degrees. Chance of precipitation is 70%. New rainfall amounts range from one-tenth to one-quarter of an inch, with higher amounts possible during thunderstorms.
Saturday
There will be showers and thunderstorms. The high temperature is near 84 degrees. Chance of precipitation is 80%. New rainfall amounts range from one-tenth to one-quarter of an inch, with higher amounts possible during thunderstorms.
saturday night
Showers and thunderstorms possible, mostly cloudy before 2 a.m. with low around 69 degrees. Chance of precipitation is 70%.
Sunday
Showers and thunderstorms, mainly after 8 a.m., with a high near 86 degrees. Chance of precipitation is 80%.
sunday night
Showers and thundershowers, mainly before 2 a.m., with a low of about 69 degrees.
on Monday
Showers and thunderstorms possible, mainly after 2pm.
Monday night
Showers and thunderstorms possible, mostly cloudy before 8 p.m., with low around 69 degrees.
Tuesday
Showers and thunderstorms possible, mainly after 2pm.
tuesday night
Showers and thunderstorms possible, mostly cloudy before 8 p.m., with lows around 70 degrees.
Wednesday
Showers and thunderstorms possible. Partly sunny, with a high near 86 degrees.
Wednesday night
Showers and thunderstorms possible. Mostly cloudy with lows around 70 degrees.
Thursday
Showers and thunderstorms possible. Mostly cloudy with a high near 85 degrees.
What was the climate like during the most recent reporting period?
The NWS Metro Atlanta Climate Summary is now updated with June 2024 data.
In an article titled “What is the difference between climate and weather?”, the National Oceanic Administration describes the difference as follows:
“Weather is what you see outside on any given day. For example, it could be 75 degrees and sunny, or it could be 20 degrees and snowing. That's the weather.
“Climate is the average of that weather. For example, it might be snowy in January in the Northeast and hot and humid in July in the Southeast. That's what climate is. Climate records also include extremes, such as record high temperatures or record rainfall amount. If you've ever heard your local meteorologist say “Today we hit a record high for the day,” she was talking about a climate record.
“So when we talk about climate change, we're talking about changes in long-term averages of daily weather. In most places, weather changes every minute, every hour, every day, and seasonally. However, climate is a function of time and space. Weather averages.
Last month's climate report for the Atlanta area showed how far off the average temperatures were for the month. The average temperature on a given date is the average over a 30-year period.
| date | maximum | smallest | Average | deviate from the norm | precipitation |
| 2024-06-01 | 78 | 65 | 71.5 | -3.6 | 0 |
| 2024-06-02 | 85 | 67 | 76 | 0.6 | 0.06 |
| 2024-06-03 | 89 | 69 | 79 | 3.4 | time |
| 2024-06-04 | 86 | 70 | 78 | 2.2 | time |
| 2024-06-05 | 86 | 72 | 79 | 3 | 0.17 |
| 2024-06-06 | 85 | 70 | 77.5 | 1.3 | 0.1 |
| 2024-06-07 | 88 | 70 | 79 | 2.6 | 0 |
| 2024-06-08 | 87 | 63 | 75 | -1.6 | 0 |
| 2024-06-09 | 93 | 70 | 81.5 | 4.7 | 0 |
| 2024-06-10 | 85 | 69 | 77 | 0 | 0.4 |
| 2024-06-11 | 87 | 64 | 75.5 | -1.7 | 0 |
| 2024-06-12 | 89 | 71 | 80 | 2.6 | 0 |
| 2024-06-13 | 90 | 72 | 81 | 3.4 | 0 |
| 2024-06-14 | 95 | 72 | 83.5 | 5.8 | 0 |
| 2024-06-15 | 97 | 76 | 86.5 | 8.6 | 0.02 |
| 2024-06-16 | 96 | 75 | 85.5 | 7.4 | 0 |
| 2024-06-17 | 93 | 75 | 84 | 5.7 | time |
| 2024-06-18 | 91 | 73 | 82 | 3.6 | 0 |
| 2024-06-19 | 89 | 71 | 80 | 1.4 | 0 |
| 2024-06-20 | 90 | 73 | 81.5 | 2.8 | 0 |
| 2024-06-21 | 93 | 71 | 82 | 3.1 | 0 |
| 2024-06-22 | 98 | 74 | 86 | 7 | 0 |
| 2024-06-23 | 98 | 77 | 87.5 | 8.3 | 0 |
| 2024-06-24 | 97 | 75 | 86 | 6.7 | 0.21 |
| 2024-06-25 | 98 | 72 | 85 | 5.6 | 0 |
| 2024-06-26 | 100 | 75 | 87.5 | 7.9 | 0 |
| 2024-06-27 | 91 | 75 | 83 | 3.3 | time |
| 2024-06-28 | 91 | 75 | 83 | 3.2 | 0.13 |
| 2024-06-29 | 91 | 76 | 83.5 | 3.6 | 0.65 |
| 2024-06-30 | 97 | 77 | 87 | 7 | 0 |
Metro Atlanta Climate Almanac
This almanac provides information on past climate conditions as of today (July 19) for comparison with current weather.
Simply put, it helps you understand what the weather will typically look like on this day based on historical data.
| daily data | Observed | normal | highest record | lowest record |
| maximum temperature | medium size | 90 | 1986 101 | 1910 71 |
| lowest temperature | medium size | 72 | 1980, 77 years old | 2009 63 |
| average temperature | medium size | 81.2 | 1986 88.5 | 1910 67.0 |
| precipitation | medium size | 0.14 | 2.18, 2014 | 0.00 in 2020 |
| snowfall | medium size | 0.0 | 0.0 in 2023 | 0.0 in 2023 |
| Snow depth | medium size | – | 2023 0 | 2023 0 |
| Hard drive (base 65) | medium size | 0 | 2023 0 | 2023 0 |
| CDD (base 65) | medium size | 16 | 24, 1986 | 2 1910 |
| Summary of this month so far | Observed | normal | highest record | lowest record |
| average maximum temperature | 93.0 | 90.0 | In 1980 it was 97.5 | 1892 80.3 |
| average minimum temperature | 75.1 | 71.6 | 1980 76.1 | 1967 64.1 |
| average temperature | 84.1 | 80.8 | 1980 86.8 | In 1940 it was 72.7 |
| total precipitation | 3.65 | 3.12 | 14.22, 2005 | In 1995 it was 0.17 |
| total snowfall | 0.0 | 0.0 | 2001T | 0.0 in 2024 |
| maximum snow depth | 0 | – | T in 1942 | 2024 0 |
| Total number of hard drives (base 65) | 0 | 0 | 4 times in 1892 | 2024 0 |
| Total CDD (based on 65) | Chapter 349 | 300 | 1980 420 | 1967 153 |
| Year-to-date summary | Observed | normal | highest record | lowest record |
| average maximum temperature | 74.4 | 71.9 | 2012 75.5 | 1895 65.7 |
| average minimum temperature | 55.2 | 52.4 | In 1880 it was 55.7 | 45.7 in 1940 |
| average temperature | 64.8 | 62.2 | 2012 65.6 | 1940 56.1 |
| total precipitation | 32.37 | 28.85 | 1912 47 o'clock | 13.36, 1986 |
| Total snowfall (since July 1) | 0.0 | 0.0 | 2001T | 0.0 in 2024 |
| Maximum snow depth (as of July 1) | 0 | – | T in 1942 | 2024 0 |
| Total hard drives (as of July 1st) | 0 | 0 | 4 times in 1892 | 2024 0 |
| Total CDD (since January 1) | Chapter 1254 | Chapter 984 | 2024 1254 | 1961 553 |
Recording period:
- Maximum temperature: 1878-10-04 to 2024-07-18
- Minimum temperature: 1878-10-04 to 2024-07-18
- Precipitation: 1878-10-01 to 2024-07-18
- Snowfall time: 1928-12-25 to 2024-07-17
- Snow depth: 1928-12-25 to 2024-07-15
For more information about our region's climate, visit the Atlanta-area NWS Climate FAQ.
What does the National Weather Service do?
The National Weather Service (NWS) is part of the National Oceanic and Atmospheric Administration (NOAA).
NWS describes its role as follows:
“The National Weather Service (NWS) provides weather, water and climate forecasts and warnings to the United States, its territories, adjacent waters and ocean areas to protect life and property and strengthen the national economy.
“These services include forecasts and observations, warnings, impact-based decision support services and education, in an effort to create an all-weather nation. The ultimate goal is to create a society that is prepared for and responds to weather, water and climate events.
