Cobb climate summary & weather forecast for Thursday, March 20, 2025

Cobb weather March 20: Photo of cloudy skies above a residential street

The National Weather Service forecasts mostly cloudy skies here in Cobb County on Thursday, March 20, 2025, with a high near 55 degrees.

The National Weather Service has issued a freeze warning for Cobb and other counties for Friday morning, beginning in the overnight hours.

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Current Conditions
Marietta, US
9:05 pm, Mar 20, 2025
temperature icon 44°F
overcast clouds
Humidity 66 %
Pressure 1017 mb
Wind 18 mph
Wind Gust Wind Gust: 25 mph
Clouds Clouds: 100%
Visibility Visibility: 6 mi
Sunrise Sunrise: 7:41 am
Sunset Sunset: 7:49 pm

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

  1. The extended forecast for Cobb County
  2. Last month’s climate summary for the metro Atlanta region
  3. 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

A 20 percent chance of showers before 7 a.m. Mostly cloudy, then gradually becoming sunny, with a high near 55. West wind 10 to 20 mph, with gusts as high as 30 mph.

Tonight

Partly cloudy, with a low around 33. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Friday

Widespread frost before 9 a.m. Otherwise, sunny, with a high near 63. West wind 5 to 10 mph, with gusts as high as 15 mph.

Friday Night

Mostly clear, with a low around 41. Calm wind becoming southwest around 5 mph after midnight.

Saturday

Sunny, with a high near 70. West wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday Night

Clear, with a low around 44.

Sunday

Sunny, with a high near 76.

Sunday Night

A chance of showers, then showers and possibly a thunderstorm after 2 a.m. Low around 53. Chance of precipitation is 80 percent.

Monday

Showers and possibly a thunderstorm before 8 a.m, then a chance of showers between 8 a.m and 2 p.m. High near 67. Chance of precipitation is 80 percent.

Monday Night

Partly cloudy, with a low around 41.

Tuesday

Sunny, with a high near 66.

Tuesday Night

Mostly clear, with a low around 46.

Wednesday

Sunny, with a high near 71.

What was the climate like in the latest reporting period?

The NWS climate summary for metro Atlanta has now been updated with February 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.

DateMax TempMin TempAvgDeparture from normPrecipitation
2025-02-01654454.58.70
2025-02-02694456.510.50
2025-02-0374445912.80
2025-02-04775666.520.20
2025-02-05745363.517T
2025-02-0672606619.30
2025-02-07776269.522.60.06
2025-02-08756268.521.4T
2025-02-0973576517.70.1
2025-02-10604753.560
2025-02-11524046-1.70.33
2025-02-12433941-6.92.58
2025-02-136137490.91.06
2025-02-14582943.5-4.80
2025-02-15524247-1.50.08
2025-02-16643750.51.70.88
2025-02-17503040-90
2025-02-18583144.5-4.70
2025-02-19463440-9.50.1
2025-02-20352329-20.7T
2025-02-21481933.5-16.50
2025-02-22532941-9.20
2025-02-23553143-7.40
2025-02-24694255.54.80
2025-02-257545609.10
2025-02-2679476311.80
2025-02-2776526412.60
2025-02-287345597.30

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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