September Weather in Willowick, United States

Last updated: June 24, 2025

In September, the average temperature in Willowick, United States hovers around 20°C (68°F), creating a pleasant atmosphere for various activities. Expect a minimum of 12°C (53°F) and a maximum of 28°C (83°F), offering a comfortable range for all preferences. However, be prepared for 91 mm (3.6 in) of precipitation spread over 9 days, and anticipate an average humidity level of about 77%, making it the perfect time for those who enjoy a slightly moist environment.

September Temperature in Willowick

In September in Willowick, the average temperature is 20°C (68°F). Maximum temperatures can reach 28°C (83°F), while minimum temperatures can drop to as low as 12°C (53°F). This pleasant climate makes Willowick an ideal destination for outdoor activities and sightseeing adventures.

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

The chart illustrates September temperature patterns in Willowick, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willowick, September typically has an average temperature of 20°C (68°F), with highs reaching up to 28°C (83°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Willowick

In Willowick in September, the precipitation amount is 91 mm (3.6 in) spread over 9 days.

September Precipitation Trends in Willowick

The chart displays monthly precipitation patterns in Willowick, 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 Willowick, September typically receives around 91 mm (3.6 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 Willowick

In Willowick in September, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.

September Average Humidity in Willowick

This chart illustrates the average monthly humidity levels in Willowick, 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 Willowick is approximately 77%, 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 Willowick

In Willowick 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 Willowick.

Maximum UV Index Levels in Willowick for September

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

Data source: Willowick 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 Willowick Compares to Other Months

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

This table compares monthly weather conditions in Willowick, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	100 mm (3.9 inches)	88%	moderate
February Weather	-1°C (31°F)	100 mm (3.9 inches)	88%	moderate
March Weather	2°C (35°F)	97 mm (3.8 inches)	87%	high
April Weather	6°C (43°F)	114 mm (4.5 inches)	87%	very high
May Weather	12°C (54°F)	112 mm (4.4 inches)	81%	very high
June Weather	19°C (66°F)	92 mm (3.6 inches)	83%	very high
July Weather	23°C (73°F)	104 mm (4.1 inches)	82%	very high
August Weather	23°C (73°F)	77 mm (3.0 inches)	76%	very high
September Weather	20°C (68°F)	91 mm (3.6 inches)	77%	very high
October Weather	15°C (59°F)	139 mm (5.5 inches)	82%	high
November Weather	7°C (44°F)	137 mm (5.4 inches)	89%	moderate
December Weather	3°C (37°F)	115 mm (4.5 inches)	86%	low