Marietta (GA)
September
Weather in Marietta, Georgia for September 2026
Your guide to Marietta weather in September - trends and predictions
In general, the average temperature in Marietta at the beginning of September is 28.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.6 °F by the end of September.
Marietta experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 63.2 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
29°/21°
Temperatures
12 km/h
Avg max wind
62 %
Avg humidity
Marietta Weather September
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Temperatures trend during September in Marietta
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September weather in Marietta day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Cloudy | 26° /19° | 0 mm | 8 | |
| Sept. 2 |  Partly cloudy | 27° /19° | 0 mm | 10 | |
| Sept. 3 |  Overcast | 27° /19° | 0 mm | 10 | |
| Sept. 4 |  Moderate rain at times | 31° /22° | 3.1 mm | 9 | |
| Sept. 5 | Cloudy | 32° /23° | 0 mm | 10 | |
| Sept. 6 |  Thundery outbreaks possible | 31° /24° | 0 mm | 5 | |
| Sept. 7 | Overcast | 27° /19° | 0 mm | 10 | |
| Sept. 8 | Overcast | 23° /19° | 0 mm | 2 | |
| Sept. 9 | Cloudy | 25° /19° | 0 mm | 5 | |
| Sept. 10 |  Sunny | 27° /18° | 0 mm | 9 | |
| Sept. 11 | Sunny | 30° /17° | 0 mm | 9 | |
| Sept. 12 | Partly cloudy | 28° /20° | 0 mm | 9 | |
| Sept. 13 | Overcast | 28° /22° | 0 mm | 7 | |
| Sept. 14 | Overcast | 31° /21° | 0 mm | 9 | |
| Sept. 15 | Overcast | 27° /22° | 0 mm | 5 | |
| Sept. 16 | Partly cloudy | 30° /21° | 0 mm | 8 | |
| Sept. 17 | Moderate rain at times | 30° /20° | 3.1 mm | 9 | |
| Sept. 18 | Partly cloudy | 30° /20° | 0 mm | 8 | |
| Sept. 19 | Thundery outbreaks possible | 30° /24° | 2.3 mm | 7 | |
| Sept. 20 | Thundery outbreaks possible | 29° /22° | 3.2 mm | 8 | |
| Sept. 21 | Overcast | 29° /22° | 0 mm | 8 | |
| Sept. 22 | Overcast | 32° /22° | 0 mm | 6 | |
| Sept. 23 | Partly cloudy | 31° /22° | 0 mm | 8 | |
| Sept. 24 | Cloudy | 30° /23° | 0 mm | 8 | |
| Sept. 25 |  Light rain shower | 27° /22° | 9.7 mm | 1 | |
| Sept. 26 | Moderate rain at times | 27° /21° | 4.6 mm | 2 | |
| Sept. 27 |  Fog | 26° /20° | 37.2 mm | 4 | |
| Sept. 28 | Mist | 29° /20° | 0 mm | 7 | |
| Sept. 29 | Partly cloudy | 29° /21° | 0 mm | 7 | |
| Sept. 30 | Overcast | 25° /20° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Marietta in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Marietta forecast closer to your planned date for the most up-to-date weather information.
Change Month
Marietta in September - FAQ
What are the expected maximum and minimum temperatures in Marietta during September?
During September, expect a variety of temperatures with highs around 29° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Marietta during September?
Moderate rainfall is anticipated in Marietta during September, with a total of 63.2 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Marietta during September?
The average wind speed in Marietta during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Marietta
Explore the daily rainfall trends and prepare for Mariettas September weather 💧
Typically, Marietta has 7 rainy days in September with a total of 63.2 mm of rainfall.
UV exposure in Marietta during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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