September Weather in Cobb, United States

Last updated: June 24, 2025

In September, the average temperature in Cobb, United States hovers around 21°C (71°F). However, be prepared for a range of temperatures; it can dip to a chilly 7°C (44°F) or rise to a scorching 41°C (106°F). Rain is minimal, with only 3 mm (0.1 in) expected over the course of 1 day. With an average humidity of 68%, the weather is moderately comfortable, making this a delightful time to explore!

September Temperature in Cobb

In September in Cobb, the average temperature is 21°C (71°F). The maximum can reach 41°C (106°F) and the minimum can be as low as 7°C (44°F). Be prepared for a wide range of temperatures, making it essential to pack both light clothing for the heat and layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Cobb, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cobb, September typically has an average temperature of 21°C (71°F), with highs reaching up to 41°C (106°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Cobb

In Cobb in September, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

September Precipitation Trends in Cobb

The chart displays monthly precipitation patterns in Cobb, 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 Cobb, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 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 Cobb

In Cobb in September, humidity is 68%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making traveling a bit sticky but also inviting for leisurely strolls and outdoor adventures.

September Average Humidity in Cobb

This chart illustrates the average monthly humidity levels in Cobb, 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 Cobb is approximately 68%, 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 Cobb

In Cobb 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 Cobb.

Maximum UV Index Levels in Cobb for September

The chart shows the monthly maximum UV Index (UVI) for Cobb 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 Cobb typically reaches 9, which falls under the very high exposure category.

Data source: Cobb 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 Cobb Compares to Other Months

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

This table compares monthly weather conditions in Cobb, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	148 mm (5.8 inches)	86%	moderate
February Weather	9°C (49°F)	162 mm (6.4 inches)	84%	moderate
March Weather	10°C (51°F)	104 mm (4.1 inches)	83%	high
April Weather	14°C (57°F)	48 mm (1.9 inches)	80%	very high
May Weather	17°C (63°F)	31 mm (1.2 inches)	80%	extreme
June Weather	22°C (71°F)	3 mm (0.1 inches)	76%	extreme
July Weather	24°C (76°F)	0 mm (0.0 inches)	70%	extreme
August Weather	24°C (75°F)	0 mm (0.0 inches)	66%	very high
September Weather	21°C (71°F)	3 mm (0.1 inches)	68%	very high
October Weather	17°C (63°F)	44 mm (1.7 inches)	72%	high
November Weather	12°C (53°F)	59 mm (2.3 inches)	84%	moderate
December Weather	8°C (47°F)	99 mm (3.9 inches)	84%	moderate