September Weather in Kennesaw, United States

Last updated: June 24, 2025

In September, the average temperature in Kennesaw, United States is a mild 23°C (74°F), making it a pleasant time to visit. However, temperatures can fluctuate, with minimums dropping to 10°C (50°F) and maximums soaring to 36°C (96°F). Visitors should be prepared for a bit of rain, as precipitation averages 114 mm (4.5 in) over 9 days, and the average humidity hovers at a high 82%. 🌦️

September Temperature in Kennesaw

In September in Kennesaw, the average temperature is 23°C (74°F). Maximums can reach 36°C (96°F), while minimums can drop as low as 10°C (50°F). It's a great time to explore Kennesaw, so pack accordingly for both warm days and cooler evenings!

September Weather in Kennesaw: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kennesaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kennesaw, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (96°F) and lows dropping to around 10°C (50°F).

Data source: Temperature data for Kennesaw generated using information from the Copernicus Climate Change Service.

September Precipitation in Kennesaw

In Kennesaw in September, the precipitation amount is 114 mm (4.5 in) over the course of 9 days.

September Precipitation Trends in Kennesaw

The chart displays monthly precipitation patterns in Kennesaw, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kennesaw, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Kennesaw

In Kennesaw in September, humidity is 82%. With an average temperature of 23°C (74°F), this humidity feels like you are walking through a warm, damp blanket, making travel a bit uncomfortable and sticky as you navigate the air thick with moisture.

September Average Humidity in Kennesaw

This chart illustrates the average monthly humidity levels in Kennesaw, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kennesaw is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kennesaw

In Kennesaw in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Kennesaw.

Maximum UV Index Levels in Kennesaw for September

The chart shows the monthly maximum UV Index (UVI) for Kennesaw in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kennesaw typically reaches 9, which falls under the very high exposure category.

Data source: Kennesaw September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Kennesaw Compares to Other Months

Weather in Kennesaw varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kennesaw, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Kennesaw, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	113 mm (4.5 inches)	86%	moderate
February Weather	10°C (50°F)	158 mm (6.2 inches)	84%	high
March Weather	13°C (56°F)	142 mm (5.6 inches)	83%	very high
April Weather	16°C (62°F)	132 mm (5.2 inches)	81%	very high
May Weather	21°C (71°F)	111 mm (4.4 inches)	81%	extreme
June Weather	24°C (76°F)	127 mm (5.0 inches)	81%	extreme
July Weather	26°C (79°F)	117 mm (4.6 inches)	83%	extreme
August Weather	26°C (78°F)	150 mm (5.9 inches)	81%	very high
September Weather	23°C (74°F)	114 mm (4.5 inches)	82%	very high
October Weather	18°C (65°F)	137 mm (5.4 inches)	78%	very high
November Weather	11°C (52°F)	85 mm (3.4 inches)	86%	high
December Weather	9°C (48°F)	142 mm (5.6 inches)	89%	moderate