Will County (Joliet)
May
Weather in Will County, Illinois for May 2027
Your guide to Will County weather in May - trends and predictions
In general, the average temperature in Will County at the beginning of May is 17.7 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.1 °C by the end of May.
The climate of Will County in May is notably wet, with an average of 13 rainy days, and a total of 173.2 mm of precipitation.
Is May a good time to visit Will County? check out the best time to travel to Will County page.
✨ Is May a good time to visit Will County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
18
Dry days
13
Rainy days
0
Snow days
21°/10°
Temperatures
20 km/h
Avg max wind
71 %
Avg humidity
Will County Weather May
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Temperatures trend during May in Will County
See the weather trend as well as the moving average line
May weather in Will County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate rain | 17° /10° | 12.4 mm | 5 | |
| May 2 |  Light rain | 17° /8° | 4.1 mm | 6 | |
| May 3 |  Light rain shower | 18° /8° | 1.3 mm | 5 | |
| May 4 | Moderate rain | 19° /8° | 14.6 mm | 5 | |
| May 5 |  Cloudy | 16° /9° | 0.8 mm | 4 | |
| May 6 |  Partly cloudy | 18° /7° | 0 mm | 5 | |
| May 7 |  Patchy light rain with thunder | 19° /8° | 5.3 mm | 5 | |
| May 8 |  Thundery outbreaks possible | 18° /8° | 8.3 mm | 5 | |
| May 9 | Light rain | 18° /6° | 1.7 mm | 6 | |
| May 10 | Patchy rain possible | 20° /7° | 0.2 mm | 7 | |
| May 11 | Patchy rain possible | 19° /7° | 1.5 mm | 6 | |
| May 12 | Patchy rain possible | 24° /9° | 0.8 mm | 6 | |
| May 13 | Light rain | 20° /12° | 8.9 mm | 5 | |
| May 14 | Light rain | 19° /10° | 9 mm | 6 | |
| May 15 | Patchy rain possible | 24° /12° | 0.2 mm | 5 | |
| May 16 | Moderate rain | 26° /14° | 20.5 mm | 5 | |
| May 17 | Light rain | 23° /14° | 3.3 mm | 6 | |
| May 18 | Patchy rain possible | 22° /14° | 1.9 mm | 6 | |
| May 19 |  Moderate or heavy rain shower | 23° /12° | 7.7 mm | 5 | |
| May 20 | Moderate rain | 17° /8° | 21 mm | 6 | |
| May 21 | Moderate rain | 18° /9° | 24.9 mm | 5 | |
| May 22 | Partly cloudy | 21° /11° | 0.3 mm | 7 | |
| May 23 | Light rain | 23° /12° | 3.3 mm | 5 | |
| May 24 | Moderate rain | 23° /12° | 10.2 mm | 6 | |
| May 25 |  Sunny | 21° /10° | 0 mm | 6 | |
| May 26 | Light rain | 23° /10° | 6.3 mm | 7 | |
| May 27 | Patchy rain possible | 22° /12° | 2 mm | 6 | |
| May 28 | Sunny | 21° /12° | 0.7 mm | 6 | |
| May 29 | Sunny | 23° /11° | 0 mm | 7 | |
| May 30 | Patchy rain possible | 26° /12° | 1.5 mm | 7 | |
| May 31 | Patchy rain possible | 26° /13° | 0.7 mm | 7 | |
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Important Notice
Our weather forecast for Will 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 Will County forecast closer to your planned date for the most up-to-date weather information.
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Will County in May - FAQ
What are the expected maximum and minimum temperatures in Will County during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Will County during May?
Significant rainfall exceeding 173.2 mm is expected in Will County during May, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Will County during May?
The average wind speed in Will County during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Will County
Explore the daily rainfall trends and prepare for Will Countys May weather 💧
Typically, Will County has 13 rainy days in May with a total of 173.2 mm of rainfall.
UV exposure in Will County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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