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September Weather in Willoughby Hills, United States

Last updated: June 24, 2025

In September, the average temperature in Willoughby Hills, United States hovers around 20°C (67°F). Expect a minimum dip to 7°C (45°F) and a maximum rise to 32°C (90°F). With 92 mm (3.6 in) of precipitation spread over 11 days, the weather can be quite humid, boasting an average humidity level of 77%. Prepare accordingly for a mix of sunny and rainy moments!

September Temperature in Willoughby Hills

In September in Willoughby Hills, the average temperature is 20°C (67°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop to as low as 7°C (45°F). This weather makes it a perfect time for travelers to enjoy outdoor activities while being prepared for varying temperatures throughout the day.

September Weather in Willoughby Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Willoughby Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willoughby Hills, September typically has an average temperature of 20°C (67°F), with highs reaching up to 32°C (90°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec293138485969747267574235
Data source: Temperature data for Willoughby Hills generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Willoughby Hills

In Willoughby Hills in September, the precipitation amount is 92 mm (3.6 in) spread over 11 days.

September Precipitation Trends in Willoughby Hills

The chart displays monthly precipitation patterns in Willoughby Hills, 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 Willoughby Hills, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8995991201291301341039212110799
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Willoughby Hills

In Willoughby Hills in September, humidity is 77%. With an average temperature of 20°C (67°F), this humidity feels like a thick, warm blanket wrapping around you, making travel uncomfortable and sticky, and often leading to a quick need for shade or refreshing drinks.

September Average Humidity in Willoughby Hills

This chart illustrates the average monthly humidity levels in Willoughby Hills, 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 Willoughby Hills is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Willoughby Hills

In Willoughby Hills 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 Willoughby Hills.

Maximum UV Index Levels in Willoughby Hills for September

The chart shows the monthly maximum UV Index (UVI) for Willoughby Hills 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 Willoughby Hills typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Willoughby Hills 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 Willoughby Hills Compares to Other Months

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

This table compares monthly weather conditions in Willoughby Hills, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)89 mm (3.5 inches)88%moderate
February Weather0°C (32°F)95 mm (3.7 inches)88%moderate
March Weather3°C (38°F)98 mm (3.9 inches)87%high
April Weather9°C (48°F)120 mm (4.7 inches)87%very high
May Weather15°C (60°F)129 mm (5.1 inches)81%very high
June Weather21°C (69°F)130 mm (5.1 inches)83%very high
July Weather23°C (74°F)134 mm (5.3 inches)82%very high
August Weather22°C (72°F)103 mm (4.1 inches)76%very high
September Weather20°C (67°F)92 mm (3.6 inches)77%very high
October Weather14°C (57°F)121 mm (4.8 inches)82%high
November Weather5°C (42°F)107 mm (4.2 inches)89%moderate
December Weather2°C (35°F)99 mm (3.9 inches)86%low

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