September Weather in Worcester, United States

Last updated: June 24, 2025

In September, the average temperature in Worcester, United States is a pleasant 16°C (62°F). Daily temperatures can range from a chilly 0°C (32°F) to a warm 30°C (87°F). Expect a total precipitation of 97 mm (3.8 in) spread over 10 days, contributing to an average humidity of 72%. Enjoy the climate while staying prepared!

September Temperature in Worcester

In September, in Worcester, the average temperature is 16°C (62°F). Maximums can reach 30°C (87°F), while minimums can dip as low as 0°C (32°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Worcester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Worcester, September typically has an average temperature of 16°C (62°F), with highs reaching up to 30°C (87°F) and lows dropping to around 0°C (32°F).

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

September Precipitation in Worcester

In Worcester in September, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

September Precipitation Trends in Worcester

The chart displays monthly precipitation patterns in Worcester, 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 Worcester, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 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 Worcester

In Worcester in September, humidity is 72%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapped around you, making it slightly uncomfortable for traveling as you might find yourself sweating more than usual, especially during outdoor activities.

September Average Humidity in Worcester

This chart illustrates the average monthly humidity levels in Worcester, 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 Worcester is approximately 72%, 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 Worcester

In Worcester in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Worcester.

Maximum UV Index Levels in Worcester for September

The chart shows the monthly maximum UV Index (UVI) for Worcester 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 Worcester typically reaches 8, which falls under the very high exposure category.

Data source: Worcester 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 Worcester Compares to Other Months

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

This table compares monthly weather conditions in Worcester, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	76 mm (3.0 inches)	89%	moderate
February Weather	-3°C (27°F)	94 mm (3.7 inches)	88%	moderate
March Weather	0°C (33°F)	87 mm (3.4 inches)	86%	high
April Weather	7°C (44°F)	114 mm (4.5 inches)	84%	very high
May Weather	13°C (56°F)	115 mm (4.5 inches)	76%	very high
June Weather	18°C (65°F)	101 mm (4.0 inches)	72%	very high
July Weather	21°C (70°F)	117 mm (4.6 inches)	66%	very high
August Weather	20°C (68°F)	106 mm (4.2 inches)	64%	very high
September Weather	16°C (62°F)	97 mm (3.8 inches)	72%	very high
October Weather	11°C (51°F)	144 mm (5.7 inches)	81%	high
November Weather	2°C (37°F)	97 mm (3.8 inches)	87%	moderate
December Weather	-2°C (29°F)	92 mm (3.6 inches)	84%	low