DuPage County (Naperville)
May
Weather in DuPage County, Illinois for May 2026
Your guide to DuPage County weather in May - trends and predictions
In general, the average temperature in DuPage County at the beginning of May is 18.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.6 °F by the end of May.
DuPage County in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 134.8 mm.
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Temperatures
Rain 🌧️
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14
Dry days
17
Rainy days
0
Snow days
22°/11°
Temperatures
18 km/h
Avg max wind
69 %
Avg humidity
DuPage County Weather May
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Temperatures trend during May in DuPage County
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May weather in DuPage County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 20° /12° | 35.4 mm | 5 | |
| May 2 |  Patchy light rain | 19° /10° | 5.9 mm | 4 | |
| May 3 | Light rain shower | 17° /9° | 2.4 mm | 4 | |
| May 4 |  Moderate or heavy rain shower | 16° /8° | 11.3 mm | 4 | |
| May 5 |  Partly cloudy | 16° /8° | 0 mm | 4 | |
| May 6 |  Sunny | 20° /8° | 0 mm | 5 | |
| May 7 |  Moderate or heavy rain with thunder | 20° /10° | 5.7 mm | 5 | |
| May 8 |  Thundery outbreaks possible | 20° /9° | 0.8 mm | 5 | |
| May 9 | Light rain shower | 17° /5° | 4.1 mm | 5 | |
| May 10 | Patchy rain possible | 20° /7° | 0.4 mm | 5 | |
| May 11 | Patchy rain possible | 20° /7° | 0.8 mm | 5 | |
| May 12 | Thundery outbreaks possible | 25° /10° | 1.2 mm | 6 | |
| May 13 | Moderate or heavy rain shower | 23° /15° | 15.6 mm | 5 | |
| May 14 | Light rain | 19° /11° | 7.8 mm | 5 | |
| May 15 | Patchy rain possible | 23° /12° | 0 mm | 5 | |
| May 16 | Patchy light drizzle | 27° /13° | 9.6 mm | 6 | |
| May 17 | Light rain shower | 20° /13° | 3.3 mm | 5 | |
| May 18 | Patchy rain possible | 21° /11° | 0 mm | 5 | |
| May 19 | Patchy light drizzle | 21° /11° | 8.2 mm | 5 | |
| May 20 | Partly cloudy | 17° /7° | 34.1 mm | 5 | |
| May 21 | Partly cloudy | 17° /9° | 35.9 mm | 5 | |
| May 22 | Partly cloudy | 21° /10° | 0.3 mm | 5 | |
| May 23 | Sunny | 24° /11° | 0 mm | 6 | |
| May 24 |  Overcast | 22° /11° | 5.4 mm | 5 | |
| May 25 | Partly cloudy | 19° /9° | 0 mm | 5 | |
| May 26 | Overcast | 22° /9° | 4.6 mm | 5 | |
| May 27 | Sunny | 19° /11° | 2.4 mm | 5 | |
| May 28 | Partly cloudy | 20° /11° | 0.7 mm | 5 | |
| May 29 | Sunny | 23° /11° | 0 mm | 5 | |
| May 30 | Patchy rain possible | 24° /12° | 2.9 mm | 6 | |
| May 31 |  Heavy rain at times | 24° /13° | 0.9 mm | 6 | |
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Important Notice
Our weather forecast for DuPage County in May 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 DuPage County forecast closer to your planned date for the most up-to-date weather information.
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DuPage County in May - FAQ
What are the expected maximum and minimum temperatures in DuPage County during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in DuPage County during May?
Significant rainfall exceeding 134.8 mm is expected in DuPage County during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in DuPage County during May?
The average wind speed in DuPage County during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in DuPage County
Explore the daily rainfall trends and prepare for DuPage Countys May weather 💧
UV exposure in DuPage County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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