DuPage County (Naperville)
May
Weather in DuPage County, Illinois for May 2026
Your guide to DuPage County weather in May - trends and predictions
The forecast for the upcoming days in DuPage County predicts a temperature of 19.6 °F, which is slightly above the historical average.
In general, the average temperature in DuPage County at the beginning of May is 16.3 °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 19 rainy days and a total precipitation of 199.7 mm.
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Temperatures
Rain 🌧️
More
12
Dry days
19
Rainy days
0
Snow days
20°/10°
Temperatures
19 km/h
Avg max wind
70 %
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 | 16° /9° | 24.2 mm | 5 | |
| May 2 |  Patchy light rain | 16° /7° | 3.9 mm | 6 | |
| May 3 | Light rain shower | 17° /8° | 1.8 mm | 4 | |
| May 4 |  Moderate or heavy rain shower | 19° /8° | 8.2 mm | 5 | |
| May 5 |  Partly cloudy | 15° /8° | 0.3 mm | 5 | |
| May 6 |  Sunny | 16° /4° | 0 mm | 5.1 | |
| May 7 | Patchy rain possible | 15° /3° | 1.1 mm | 5.6 | |
| May 8 |  Moderate rain | 16° /7° | 11.1 mm | 0.3 | |
| May 9 | Patchy rain possible | 22° /7° | 0.6 mm | 3 | |
| May 10 |  Heavy rain | 11° /6° | 25.7 mm | 2 | |
| May 11 | Sunny | 13° /4° | 0 mm | 3 | |
| May 12 | Patchy rain possible | 12° /6° | 1 mm | 3 | |
| May 13 | Partly cloudy | 20° /13° | 0.1 mm | 5 | |
| May 14 | Patchy rain possible | 24° /12° | 0.7 mm | 4 | |
| May 15 | Sunny | 21° /11° | 0 mm | 5 | |
| May 16 | Sunny | 22° /8° | 0 mm | 5 | |
| May 17 | Patchy rain possible | 24° /13° | 0.3 mm | 4 | |
| May 18 | Moderate rain | 29° /19° | 8.3 mm | 5 | |
| May 19 | Patchy rain possible | 29° /21° | 3.2 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 20° and cooler nights around 10°. 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 199.7 mm is expected in DuPage County during May, occurring over more than 19 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 19 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 💧
Typically, DuPage County has 19 rainy days in May with a total of 199.7 mm of rainfall.
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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Where is DuPage County?Get accurate weather forecasts for DuPage County, located at latitude 41.786 and longitude -88.147. Stay updated with localized weather information tailored for DuPage County.
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