September Weather in Millville, United States

Last updated: June 24, 2025

In Millville, United States, the average temperature in September hovers around 24°C (75°F), creating a pleasant atmosphere for outdoor activities. However, temperatures can range widely, with a minimum of 6°C (44°F) and a scorching maximum of 42°C (109°F). Expect light rain, with an average precipitation of just 9 mm (0.4 in) over 1 day, and enjoy the comfortable average humidity of 46%.

September Temperature in Millville

In September in Millville, the average temperature is 24°C (75°F). The maximum can reach 42°C (109°F), and the minimum can be as low as 6°C (44°F). Be prepared for a wide range of temperatures, making it essential to pack clothes suitable for both warm and cool conditions for your travels.

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

The chart illustrates September temperature patterns in Millville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millville, September typically has an average temperature of 24°C (75°F), with highs reaching up to 42°C (109°F) and lows dropping to around 6°C (44°F).

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

September Precipitation in Millville

In Millville in September, the precipitation amount is 9 mm (0.4 in) over the course of 1 day.

September Precipitation Trends in Millville

The chart displays monthly precipitation patterns in Millville, 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 Millville, September typically receives around 9 mm (0.4 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 Millville

In Millville in September, humidity is 46%. With an average temperature of 24°C (75°F), this humidity feels like a pleasant embrace, making it ideal for leisurely strolls and outdoor adventures without feeling too sticky or oppressive for traveling.

September Average Humidity in Millville

This chart illustrates the average monthly humidity levels in Millville, 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 Millville is approximately 46%, 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 Millville

In Millville 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 Millville.

Maximum UV Index Levels in Millville for September

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

Data source: Millville 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 Millville Compares to Other Months

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

This table compares monthly weather conditions in Millville, 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)	214 mm (8.4 inches)	86%	moderate
February Weather	10°C (50°F)	194 mm (7.6 inches)	87%	moderate
March Weather	11°C (53°F)	187 mm (7.4 inches)	86%	high
April Weather	15°C (60°F)	91 mm (3.6 inches)	83%	very high
May Weather	20°C (68°F)	56 mm (2.2 inches)	72%	very high
June Weather	26°C (79°F)	9 mm (0.3 inches)	67%	extreme
July Weather	30°C (86°F)	0 mm (0.0 inches)	56%	very high
August Weather	28°C (83°F)	1 mm (0.0 inches)	42%	very high
September Weather	24°C (75°F)	9 mm (0.4 inches)	46%	very high
October Weather	18°C (64°F)	64 mm (2.5 inches)	67%	high
November Weather	12°C (54°F)	122 mm (4.8 inches)	86%	moderate
December Weather	8°C (47°F)	151 mm (5.9 inches)	86%	low