September Weather in Bridgeport, United States

Last updated: June 24, 2025

In September, the average temperature in Bridgeport, United States hovers around 13°C (56°F). While you might experience a minimum of -6°C (21°F), the maximum can reach up to 30°C (86°F). Expect a moderate precipitation amount of 10 mm (0.4 in) spread over just 2 days, and enjoy an average humidity level of 41% throughout the month.

September Temperature in Bridgeport

In September in Bridgeport, the average temperature is 13°C (56°F). Maximums can reach 30°C (86°F) and minimums can be as low as -6°C (21°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit to Bridgeport.

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

The chart illustrates September temperature patterns in Bridgeport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bridgeport, September typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (86°F) and lows dropping to around -6°C (21°F).

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

September Precipitation in Bridgeport

In Bridgeport in September, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

September Precipitation Trends in Bridgeport

The chart displays monthly precipitation patterns in Bridgeport, 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 Bridgeport, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 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 Bridgeport

In Bridgeport in September, humidity is 41%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing coolness that makes exploring the area pleasant, allowing for comfortable outdoor activities without excessive perspiration.

September Average Humidity in Bridgeport

This chart illustrates the average monthly humidity levels in Bridgeport, 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 Bridgeport is approximately 41%, 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 Bridgeport

In Bridgeport in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Bridgeport.

Maximum UV Index Levels in Bridgeport for September

The chart shows the monthly maximum UV Index (UVI) for Bridgeport 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 Bridgeport typically reaches 10, which falls under the very high exposure category.

Data source: Bridgeport 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 Bridgeport Compares to Other Months

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

This table compares monthly weather conditions in Bridgeport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	116 mm (4.6 inches)	85%	moderate
February Weather	-5°C (24°F)	115 mm (4.5 inches)	87%	high
March Weather	-3°C (27°F)	81 mm (3.2 inches)	84%	very high
April Weather	2°C (36°F)	48 mm (1.9 inches)	78%	extreme
May Weather	6°C (44°F)	41 mm (1.6 inches)	64%	extreme
June Weather	14°C (57°F)	18 mm (0.7 inches)	56%	extreme
July Weather	18°C (65°F)	25 mm (1.0 inches)	44%	extreme
August Weather	18°C (64°F)	15 mm (0.6 inches)	34%	extreme
September Weather	13°C (56°F)	10 mm (0.4 inches)	41%	very high
October Weather	6°C (44°F)	29 mm (1.1 inches)	60%	high
November Weather	2°C (35°F)	48 mm (1.9 inches)	81%	moderate
December Weather	-4°C (25°F)	79 mm (3.1 inches)	82%	moderate