The National Weather Service forecasts partly sunny skies here in Cobb County on Friday, December 13, 2024, with a high near 56 degrees.
Tonight it is expected to be partly cloudy, with an overnight low of around 40 degrees.
56°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.
What you will read in this article
- The extended forecast for Cobb County
- Last month’s climate summary for the metro Atlanta region
- The climate almanac for metro Atlanta
- What the National Weather Service is, and what it does
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
Widespread frost before 9 a.m. Otherwise, partly sunny, with a high near 56. Calm wind becoming east around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 40. East wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 52. East wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Showers likely, mainly after 1 a.m. Mostly cloudy, with a low around 41. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60 percent.
Sunday
A 50 percent chance of showers. Cloudy, with a high near 48. East wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers before 1 a.m. Cloudy, with a low around 43.
Monday
Mostly cloudy, with a high near 59.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51.
Tuesday
A 30 percent chance of showers before 1 p.m. Mostly cloudy, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 64.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 44.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 54.
What was the climate like in the latest reporting period?
The NWS climate summary for metro Atlanta has now been updated with November 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.
| Date | High | Low | Average | Departure from Norm | Precipitation |
| 2024-11-01 | 75 | 64 | 69.5 | 10.8 | T |
| 2024-11-02 | 80 | 61 | 70.5 | 12.2 | 0 |
| 2024-11-03 | 67 | 60 | 63.5 | 5.5 | T |
| 2024-11-04 | 63 | 59 | 61 | 3.4 | T |
| 2024-11-05 | 78 | 61 | 69.5 | 12.2 | T |
| 2024-11-06 | 74 | 67 | 70.5 | 13.6 | T |
| 2024-11-07 | 73 | 67 | 70 | 13.4 | T |
| 2024-11-08 | 80 | 66 | 73 | 16.7 | 0 |
| 2024-11-09 | 75 | 63 | 69 | 13 | 0 |
| 2024-11-10 | 65 | 56 | 60.5 | 4.9 | 0.07 |
| 2024-11-11 | 76 | 57 | 66.5 | 11.2 | T |
| 2024-11-12 | 77 | 52 | 64.5 | 9.5 | 0 |
| 2024-11-13 | 66 | 52 | 59 | 4.3 | 0.04 |
| 2024-11-14 | 56 | 50 | 53 | -1.4 | 0.97 |
| 2024-11-15 | 66 | 48 | 57 | 2.9 | 0 |
| 2024-11-16 | 72 | 45 | 58.5 | 4.7 | 0 |
| 2024-11-17 | 73 | 46 | 59.5 | 6 | 0 |
| 2024-11-18 | 75 | 51 | 63 | 9.7 | 0 |
| 2024-11-19 | 64 | 59 | 61.5 | 8.5 | 1.63 |
| 2024-11-20 | 74 | 48 | 61 | 8.3 | 0.46 |
| 2024-11-21 | 60 | 41 | 50.5 | -2 | 0 |
| 2024-11-22 | 54 | 38 | 46 | -6.2 | 0 |
| 2024-11-23 | 61 | 37 | 49 | -2.9 | 0 |
| 2024-11-24 | 70 | 40 | 55 | 3.3 | 0 |
| 2024-11-25 | 72 | 46 | 59 | 7.6 | 0 |
| 2024-11-26 | 64 | 46 | 55 | 3.8 | 0.15 |
| 2024-11-27 | 65 | 42 | 53.5 | 2.6 | 0 |
| 2024-11-28 | 67 | 43 | 55 | 4.3 | 0.05 |
| 2024-11-29 | 51 | 36 | 43.5 | -7 | 0 |
| 2024-11-30 | 50 | 31 | 40.5 | -9.8 | 0 |
Climate Almanac for metro Atlanta
This almanac provides information on past climate conditions for December 13, allowing comparisons 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 | 57 | 73 in 1991 | 29 in 2010 |
| Min Temperature | M | 39 | 64 in 1931 | 1 in 1962 |
| Avg Temperature | M | 47.7 | 68.0 in 1931 | 15.0 in 1962 |
| Precipitation | M | 0.15 | 2.23 in 2019 | 0.00 in 2023 |
| Snowfall | M | 0.0 | 1.0 in 1958 | 0.0 in 2023 |
| Snow Depth | M | – | T in 1958 | 0 in 2023 |
| HDD (base 65) | M | 17 | 50 in 1962 | 0 in 1956 |
| CDD (base 65) | M | 0 | 3 in 1931 | 0 in 2023 |
| Month-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
| Avg Max Temperature | 56.6 | 57.9 | 67.4 in 2007 | 43.7 in 1937 |
| Avg Min Temperature | 35.3 | 39.7 | 50.7 in 1998 | 25.4 in 1937 |
| Avg Temperature | 46.0 | 48.8 | 58.5 in 1998 | 34.5 in 1937 |
| Total Precipitation | 2.17 | 1.76 | 12.03 in 1919 | 0.00 in 1889 |
| Total Snowfall | 0.0 | 0.1 | 2.4 in 1958 | 0.0 in 2024 |
| Max Snow Depth | 0 | – | 2 in 2017 | 0 in 2024 |
| Total HDD (base 65) | 226 | 212 | 392 in 1937 | 86 in 1998 |
| Total CDD (base 65) | 1 | 1 | 13 in 1991 | 0 in 2023 |
| Year-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
| Avg Max Temperature | 76.5 | 74.1 | 76.6 in 2016 | 63.0 in 1878 |
| Avg Min Temperature | 57.7 | 55.0 | 57.7 in 2024 | 46.5 in 1878 |
| Avg Temperature | 67.1 | 64.6 | 67.1 in 2024 | 54.8 in 1878 |
| Total Precipitation | 61.37 | 47.62 | 68.29 in 1948 | 8.53 in 1878 |
| Total Snowfall (since July 1) | 0.0 | 0.1 | 2.4 in 1958 | 0.0 in 2024 |
| Max Snow Depth (since July 1) | 0 | – | 2 in 2017 | 0 in 2024 |
| Total HDD (since July 1) | 467 | 651 | 1218 in 1976 | 381 in 1998 |
| Total CDD (since Jan 1) | 2528 | 2050 | 2643 in 2019 | 33 in 1878 |
Period of Record:
- Max Temperature : 1878-10-04 to 2024-12-12
- Min Temperature : 1878-10-04 to 2024-12-12
- Precipitation : 1878-10-01 to 2024-12-12
- Snowfall : 1928-12-25 to 2024-12-12
- Snow Depth : 1928-12-25 to 2024-12-12
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.”
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