October Weather in Naperville, United States

Last updated: June 24, 2025

In Naperville, United States, the average temperature for October hovers around 12°C (54°F), with a notable range from a chilly -5°C (23°F) to a warm 31°C (88°F). During this time, you can expect about 129 mm (5.1 in) of precipitation spread across 12 days, coupled with an average humidity of 82%. Embrace the variability and prepare accordingly!

October Temperature in Naperville

In October in Naperville, the average temperature is 12°C (54°F). Maximum temperatures can reach up to 31°C (88°F), while minimums can drop as low as -5°C (23°F). This diverse climate makes Naperville an ideal destination for travelers seeking both warmth and cooler escapes.

October Weather in Naperville: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Naperville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Naperville, October typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (88°F) and lows dropping to around -5°C (23°F).

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

October Precipitation in Naperville

In Naperville in October, the total precipitation amount is 129 mm (5.1 in) over the course of 12 days.

October Precipitation Trends in Naperville

The chart displays monthly precipitation patterns in Naperville, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Naperville, October typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Naperville

In Naperville in October humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

October Average Humidity in Naperville

This chart illustrates the average monthly humidity levels in Naperville, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Naperville is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Naperville

In Naperville in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Naperville, you can refer to this Hourly UV Index in Naperville.

Maximum UV Index Levels in Naperville for October

The chart shows the monthly maximum UV Index (UVI) for Naperville in October, 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 October, the maximum UV index in Naperville typically reaches 6, which falls under the high exposure category.

Data source: Naperville October 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 October Weather in Naperville Compares to Other Months

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

This table compares monthly weather conditions in Naperville, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	62 mm (2.5 inches)	82%	moderate
February Weather	-3°C (28°F)	63 mm (2.5 inches)	83%	moderate
March Weather	4°C (40°F)	87 mm (3.4 inches)	84%	high
April Weather	9°C (49°F)	117 mm (4.6 inches)	85%	very high
May Weather	16°C (61°F)	157 mm (6.2 inches)	79%	very high
June Weather	22°C (72°F)	152 mm (6.0 inches)	82%	very high
July Weather	24°C (76°F)	119 mm (4.7 inches)	80%	very high
August Weather	23°C (73°F)	91 mm (3.6 inches)	81%	very high
September Weather	20°C (68°F)	95 mm (3.8 inches)	80%	very high
October Weather	12°C (54°F)	129 mm (5.1 inches)	82%	high
November Weather	4°C (39°F)	57 mm (2.3 inches)	88%	moderate
December Weather	0°C (33°F)	53 mm (2.1 inches)	84%	low