The National Weather Service forecasts mostly sunny skies here in Cobb County on Monday, April 21, 2025, with a high near 85 degrees.
The National Weather Service has issued a hazardous weather outlook for Cobb County and other parts of the region due to isolated thunderstorms that will be possible this afternoon and evening across portions of north Georgia. A few storms may be capable of an isolated damaging wind gust in far NW GA, where a Marginal Risk of severe thunderstorms (Level 1 out of 5) is in effect.
60°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.
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
Mostly sunny, with a high near 85. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3 a.m. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70 percent.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 2 a.m. Mostly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm.
Wednesday
A chance of showers before 11 a.m, then a chance of showers and thunderstorms between 11 a.m and 2 p.m, then showers likely and possibly a thunderstorm after 2 p.m. Partly sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70 percent.
Wednesday Night
Showers likely and possibly a thunderstorm before 8 p.m, then a slight chance of showers and thunderstorms between 8 p.m and 2 a.m. Mostly cloudy, with a low around 61. Chance of precipitation is 60 percent.
Thursday
A slight chance of showers and thunderstorms between 8 a.m and 2 p.m, then showers likely and possibly a thunderstorm after 2 p.m. Mostly cloudy, with a high near 83. Chance of precipitation is 60 percent.
Thursday Night
Showers likely and possibly a thunderstorm before 8 p.m, then a chance of showers and thunderstorms, mainly between 8 p.m and 2 a.m. Mostly cloudy, with a low around 62. Chance of precipitation is 60 percent.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2 p.m. Partly sunny, with a high near 85. Chance of precipitation is 40 percent.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
What was the climate like in the latest reporting period?
The NWS climate summary for metro Atlanta has now been updated with March 2025 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 | Deviation from norm | Precipitation |
| 2025-03-01 | 75 | 46 | 60.5 | 8.6 | 0 |
| 2025-03-02 | 57 | 36 | 46.5 | -5.7 | 0 |
| 2025-03-03 | 64 | 36 | 50 | -2.4 | 0 |
| 2025-03-04 | 72 | 44 | 58 | 5.3 | 0 |
| 2025-03-05 | 65 | 41 | 53 | 0.1 | 1.05 |
| 2025-03-06 | 56 | 37 | 46.5 | -6.7 | 0 |
| 2025-03-07 | 68 | 38 | 53 | -0.4 | 0 |
| 2025-03-08 | 76 | 56 | 66 | 12.3 | T |
| 2025-03-09 | 58 | 47 | 52.5 | -1.4 | 0.37 |
| 2025-03-10 | 55 | 45 | 50 | -4.2 | 0.56 |
| 2025-03-11 | 76 | 42 | 59 | 4.6 | 0 |
| 2025-03-12 | 76 | 48 | 62 | 7.4 | 0 |
| 2025-03-13 | 74 | 55 | 64.5 | 9.6 | 0 |
| 2025-03-14 | 75 | 55 | 65 | 9.9 | 0 |
| 2025-03-15 | 78 | 60 | 69 | 13.6 | 0.08 |
| 2025-03-16 | 74 | 49 | 61.5 | 5.9 | 0.44 |
| 2025-03-17 | 63 | 42 | 52.5 | -3.4 | 0 |
| 2025-03-18 | 77 | 42 | 59.5 | 3.4 | 0 |
| 2025-03-19 | 79 | 47 | 63 | 6.7 | 0 |
| 2025-03-20 | 67 | 42 | 54.5 | -2.1 | 0.02 |
| 2025-03-21 | 66 | 36 | 51 | -5.8 | 0 |
| 2025-03-22 | 74 | 45 | 59.5 | 2.4 | 0 |
| 2025-03-23 | 77 | 47 | 62 | 4.7 | 0 |
| 2025-03-24 | 66 | 53 | 59.5 | 2 | 0.14 |
| 2025-03-25 | 80 | 46 | 63 | 5.2 | 0 |
| 2025-03-26 | 75 | 51 | 63 | 5 | 0 |
| 2025-03-27 | 75 | 50 | 62.5 | 4.2 | 0 |
| 2025-03-28 | 81 | 53 | 67 | 8.5 | 0 |
| 2025-03-29 | 74 | 63 | 68.5 | 9.8 | 0 |
| 2025-03-30 | 76 | 61 | 68.5 | 9.5 | 0.01 |
| 2025-03-31 | 70 | 59 | 64.5 | 5.3 | 0.34 |
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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