Naperville (IL)
October
Weather in Naperville, Illinois for October 2026
Your guide to Naperville weather in October - trends and predictions
In general, the average temperature in Naperville at the beginning of October is 24.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.3 °C by the end of October.
The climate of Naperville in October is notably wet, with an average of 15 rainy days, and a total of 74 mm of precipitation.
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Temperatures
Rain 🌧️
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16
Dry days
15
Rainy days
0
Snow days
18°/8°
Temperatures
20 km/h
Avg max wind
68 %
Avg humidity
Naperville Weather October
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Temperatures trend during October in Naperville
See the weather trend as well as the moving average line
October weather in Naperville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Fog | 24° /13° | 0 mm | 5 | |
| Oct. 2 |  Partly cloudy | 26° /12° | 0 mm | 7 | |
| Oct. 3 | Partly cloudy | 28° /12° | 0 mm | 7 | |
| Oct. 4 |  Overcast | 27° /16° | 1.9 mm | 6 | |
| Oct. 5 |  Light rain shower | 26° /15° | 10.7 mm | 6 | |
| Oct. 6 | Light rain shower | 22° /12° | 5.2 mm | 5 | |
| Oct. 7 | Patchy rain possible | 17° /6° | 3.2 mm | 4 | |
| Oct. 8 | Patchy rain possible | 16° /6° | 0.1 mm | 4 | |
| Oct. 9 |  Sunny | 17° /6° | 0 mm | 5 | |
| Oct. 10 | Sunny | 18° /6° | 0 mm | 5 | |
| Oct. 11 |  Light rain | 21° /7° | 1.8 mm | 5 | |
| Oct. 12 | Light rain shower | 17° /10° | 10.6 mm | 4 | |
| Oct. 13 | Overcast | 16° /10° | 15.8 mm | 4 | |
| Oct. 14 | Light rain shower | 15° /10° | 1.7 mm | 3 | |
| Oct. 15 | Light rain shower | 12° /7° | 1.6 mm | 3 | |
| Oct. 16 | Overcast | 15° /5° | 0 mm | 4 | |
| Oct. 17 | Overcast | 18° /7° | 0 mm | 5 | |
| Oct. 18 | Overcast | 20° /7° | 0 mm | 5 | |
| Oct. 19 | Light rain | 17° /8° | 6.8 mm | 4 | |
| Oct. 20 | Patchy rain possible | 17° /6° | 1 mm | 4 | |
| Oct. 21 | Patchy rain possible | 18° /8° | 0 mm | 4 | |
| Oct. 22 | Fog | 16° /5° | 0 mm | 4 | |
| Oct. 23 | Overcast | 17° /4° | 0 mm | 4 | |
| Oct. 24 |  Cloudy | 18° /4° | 0.1 mm | 4 | |
| Oct. 25 | Light rain | 15° /9° | 5.8 mm | 4 | |
| Oct. 26 | Light drizzle | 17° /10° | 0.4 mm | 4 | |
| Oct. 27 | Fog | 17° /6° | 1.6 mm | 4 | |
| Oct. 28 | Overcast | 13° /3° | 0 mm | 3 | |
| Oct. 29 | Overcast | 15° /8° | 3.9 mm | 4 | |
| Oct. 30 | Overcast | 13° /6° | 0 mm | 3 | |
| Oct. 31 |  Light snow | 10° /3° | 1.8 mm | 3 | |
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Important Notice
Our weather forecast for Naperville in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Naperville forecast closer to your planned date for the most up-to-date weather information.
Change Month
Naperville in October - FAQ
What are the expected maximum and minimum temperatures in Naperville during October?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Naperville during October?
Moderate rainfall is anticipated in Naperville during October, with a total of 74 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
Will it snow in Naperville in October 2026?
Naperville typically sees 0.03 cm of snowfall during October.
What are the typical wind conditions in Naperville during October?
The average wind speed in Naperville during October is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Naperville
Explore the daily rainfall trends and prepare for Napervilles October weather 💧
Typically, Naperville has 15 rainy days in October with a total of 74 mm of rainfall.
UV exposure in Naperville during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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