The National Weather Service predicts sunny weather in Cobb County on Wednesday, July 17, 2024, with a high near 94 degrees.
The National Weather Service has issued a hazardous weather outlook for Cobb County and the rest of the region as scattered thunderstorms are possible this afternoon and end after sunset. The main threats will be gusty winds, frequent lightning and locally heavy rainfall. Hot and humid weather continues, with heat index values between 100 and 105 degrees in most areas.
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 5pm. Chance of precipitation is 60%.
tonight
There is a slight chance of showers and thunderstorms before 1am and a slight chance of showers and thunderstorms after 3am. Chance of precipitation is 60%. New rainfall amounts will range from one-tenth to one-quarter of an inch, with higher amounts possible during thunderstorms.
Thursday
Showers and thunderstorms possible after 2 p.m., with highs near 90 degrees. Chance of precipitation is 80%. New rainfall amounts between a quarter of an inch and a half inch are possible.
Thursday night
Showers and thunderstorms possible before 8pm, then showers and thunderstorms possible mainly between 8pm and 2am, low pressure around 69 degrees. Chance of precipitation is 80%.
Friday
Showers and thunderstorms, mainly after 2 p.m., with highs near 87 degrees. Chance of precipitation is 80%.
Friday night
Showers and thundershowers, mainly before 2 a.m., with a low temperature of about 69 degrees.
Saturday
Showers and thunderstorms possible, mainly after 2pm.
saturday night
Showers and thunderstorms possible, mostly cloudy before 2 a.m. with lows around 70 degrees.
Sunday
Showers and thunderstorms possible, mainly after 2 p.m., partly sunny, with a high near 86 degrees.
sunday night
Showers and thunderstorms possible, mostly cloudy before 2 a.m. with low around 69 degrees.
on Monday
Showers and thunderstorms possible. Partly sunny, with a high near 87 degrees.
Monday night
Showers and thunderstorms possible. Mostly cloudy with lows around 70 degrees.
Tuesday
Showers and thunderstorms possible. Partly sunny, with a high near 87 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 just 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
The almanac provides information on past climate conditions as of today (July 17), which can be compared 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 | 1980 105 | 1966 74 |
| lowest temperature | medium size | 72 | 1881 80 years old | 61 in 2014 |
| average temperature | medium size | 81.1 | 1980 90.0 | 70.5 in 1917 |
| precipitation | medium size | 0.15 | 1906 2.82 | 0.00 in 2023 |
| 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 | 1980 25 | 6 times in 1917 |
| Summary of this month so far | Observed | normal | highest record | lowest record |
| average maximum temperature | 93.1 | 89.9 | 1980 98.0 | In 1892 it was 79.7 |
| average minimum temperature | 75.2 | 71.5 | 1980 76.2 | 1967 64.2 |
| average temperature | 84.2 | 80.7 | 1980 87.1 | In 1940 it was 72.4 |
| total precipitation | 3.50 | 2.82 | 2005 13.55 | In 1879 it was 0.03 |
| 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 312 | Chapter 267 | 1980 381 | 1940 131 |
| Year-to-date summary | Observed | normal | highest record | lowest record |
| average maximum temperature | 74.2 | 71.7 | 2012 75.3 | 1895 65.5 |
| average minimum temperature | 55.0 | 52.2 | In 1880 it was 55.6 | 45.5 in 1940 |
| average temperature | 64.6 | 62.0 | 2012 65.4 | 55.9 in 1940 |
| total precipitation | 32.22 | 28.55 | 46.96 in 1912 | 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) | 1217 | Chapter 951 | 20241217 | 1972 531 |
Recording period:
- Maximum temperature: 1878-10-04 to 2024-07-16
- Minimum temperature: 1878-10-04 to 2024-07-16
- Precipitation: 1878-10-01 to 2024-07-16
- Snowfall time: 1928-12-25 to 2024-07-15
- 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.
