The National Weather Service forecasts mostly cloudy skies here in Cobb County on Sunday, December 17, 2023, with a high near 54 degrees.
The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to light to moderate rainfall that will continue this morning before gradually coming to an end this evening.
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, mainly before noon. Mostly cloudy, with a high near 54. East wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly cloudy, with a low around 38. Northwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 51. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 25. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 43. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Widespread frost after midnight. Otherwise, mostly clear, with a low around 24.
Wednesday
Widespread frost before 9 a.m. Otherwise, mostly sunny, with a high near 50.
Wednesday Night
Widespread frost before midnight, then widespread frost after 2 a.m. Otherwise, partly cloudy, with a low around 27.
Thursday
Widespread frost, mainly before 9 a.m. Otherwise, sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 58.
What was the climate like in the latest reporting period?
The NWS climate summary for metro Atlanta has now been updated with November 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 | High | Low | Average | Departure from norm | Precipitation |
2023-11-01 | 55 | 34 | 44.5 | -14.2 | 0 |
2023-11-02 | 57 | 35 | 46 | -12.3 | 0 |
2023-11-03 | 66 | 37 | 51.5 | -6.5 | 0 |
2023-11-04 | 73 | 42 | 57.5 | -0.1 | 0 |
2023-11-05 | 75 | 48 | 61.5 | 4.2 | 0 |
2023-11-06 | 78 | 49 | 63.5 | 6.6 | 0 |
2023-11-07 | 81 | 53 | 67 | 10.4 | 0 |
2023-11-08 | 80 | 54 | 67 | 10.7 | 0 |
2023-11-09 | 78 | 60 | 69 | 13 | 0 |
2023-11-10 | 67 | 57 | 62 | 6.4 | 0.05 |
2023-11-11 | 56 | 51 | 53.5 | -1.8 | 0.64 |
2023-11-12 | 59 | 50 | 54.5 | -0.5 | T |
2023-11-13 | 67 | 51 | 59 | 4.3 | 0 |
2023-11-14 | 69 | 52 | 60.5 | 6.1 | 0 |
2023-11-15 | 63 | 53 | 58 | 3.9 | T |
2023-11-16 | 70 | 54 | 62 | 8.2 | 0 |
2023-11-17 | 72 | 58 | 65 | 11.5 | T |
2023-11-18 | 74 | 54 | 64 | 10.7 | 0 |
2023-11-19 | 70 | 47 | 58.5 | 5.5 | 0 |
2023-11-20 | 67 | 54 | 60.5 | 7.8 | T |
2023-11-21 | 67 | 58 | 62.5 | 10 | 1.23 |
2023-11-22 | 59 | 46 | 52.5 | 0.3 | 0 |
2023-11-23 | 58 | 40 | 49 | -2.9 | 0 |
2023-11-24 | 64 | 44 | 54 | 2.3 | 0 |
2023-11-25 | 60 | 44 | 52 | 0.6 | 0 |
2023-11-26 | 50 | 44 | 47 | -4.2 | 0.09 |
2023-11-27 | 52 | 39 | 45.5 | -5.4 | 0 |
2023-11-28 | 53 | 35 | 44 | -6.7 | 0 |
2023-11-29 | 56 | 28 | 42 | -8.5 | 0 |
2023-11-30 | 59 | 35 | 47 | -3.3 | 0 |
Climate Almanac for metro Atlanta
This almanac provides information on past climate conditions for today’s date, December 17, 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 | 56 | 75 in 1933 | 31 in 1901 |
Min Temperature | M | 38 | 62 in 2008 | 15 in 1901 |
Avg Temperature | M | 47.0 | 67.5 in 1933 | 23.0 in 1901 |
Precipitation | M | 0.15 | 3.65 in 1915 | 0.00 in 2022 |
Snowfall | M | 0.0 | 0.5 in 2000 | 0.0 in 2022 |
Snow Depth | M | – | 1 in 2000 | 0 in 2022 |
HDD (base 65) | M | 18 | 42 in 1901 | 0 in 2008 |
CDD (base 65) | M | 0 | 3 in 1933 | 0 in 2022 |
Month-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
Avg Max Temperature | 61.6 | 57.5 | 67.4 in 1956 | 43.6 in 1886 |
Avg Min Temperature | 41.2 | 39.4 | 47.7 in 2012 | 26.9 in 1962 |
Avg Temperature | 51.4 | 48.4 | 56.8 in 2001 | 35.8 in 1917 |
Total Precipitation | 1.69 | 2.36 | 12.34 in 1919 | 0.00 in 1889 |
Total Snowfall | 0.0 | 0.1 | 2.4 in 1958 | 0.0 in 2023 |
Max Snow Depth | 0 | – | 2 in 2017 | 0 in 2023 |
Total HDD (base 65) | 212 | 283 | 490 in 1917 | 134 in 2001 |
Total CDD (base 65) | 0 | 1 | 13 in 1991 | 0 in 2023 |
Year-to-Date Summary | Observed | Normal | Record Highest | Record Lowest |
Avg Max Temperature | 76.0 | 74.0 | 76.3 in 2016 | 62.5 in 1878 |
Avg Min Temperature | 57.3 | 54.8 | 57.4 in 2019 | 46.1 in 1878 |
Avg Temperature | 66.7 | 64.4 | 66.8 in 2019 | 54.3 in 1878 |
Total Precipitation | 39.05 | 48.22 | 68.64 in 1948 | 9.21 in 1878 |
Total Snowfall (since July 1) | 0.0 | 0.1 | 2.4 in 1958 | 0.0 in 2023 |
Max Snow Depth (since July 1) | 0 | – | 2 in 2017 | 0 in 2023 |
Total HDD (since July 1) | 551 | 722 | 1304 in 1976 | 446 in 2015 |
Total CDD (since Jan 1) | 2221 | 2050 | 2643 in 2019 | 33 in 1878 |
Period of Record:
- Max Temperature : 1878-10-04 to 2023-12-16
- Min Temperature : 1878-10-04 to 2023-12-16
- Precipitation : 1878-10-01 to 2023-12-16
- Snowfall : 1928-12-25 to 2023-12-16
- Snow Depth : 1928-12-25 to 2023-12-16
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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