Peoria County (Peoria)
May
Weather in Peoria County, Illinois for May 2026
Your guide to Peoria County weather in May - trends and predictions
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The forecast for the next days in Peoria County predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in Peoria County at the beginning of May is 17.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21 °F by the end of May.
Peoria County in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 235.8 mm.
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14
Dry days
17
Rainy days
0
Snow days
21°/12°
Temperatures
22 km/h
Avg max wind
74 %
Avg humidity
Peoria County Weather May
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Temperatures trend during May in Peoria County
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May weather in Peoria County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Overcast | 18° /11° | 27 mm | 6 | |
| May 2 |  Patchy light drizzle | 18° /8° | 3.5 mm | 6 | |
| May 3 | Overcast | 18° /10° | 0.1 mm | 5 | |
| May 4 |  Patchy rain possible | 26° /10° | 3.3 mm | 6.7 | |
| May 5 |  Moderate rain | 12° /8° | 12.2 mm | 2 | |
| May 6 | Patchy rain possible | 14° /6° | 0.4 mm | 4.9 | |
| May 7 | Patchy rain possible | 16° /7° | 3.2 mm | 6.1 | |
| May 8 | Patchy rain possible | 18° /8° | 4 mm | 0.3 | |
| May 9 | Patchy rain possible | 22° /9° | 0.1 mm | 4 | |
| May 10 | Moderate rain | 21° /14° | 9.9 mm | 4 | |
| May 11 | Patchy rain possible | 17° /11° | 0.1 mm | 3 | |
| May 12 | Patchy rain possible | 14° /8° | 0 mm | 3 | |
| May 13 | Patchy rain possible | 17° /6° | 0.7 mm | 3 | |
| May 14 | Patchy rain possible | 22° /12° | 0.1 mm | 4 | |
| May 15 |  Sunny | 24° /11° | 0 mm | 5 | |
| May 16 |  Thundery outbreaks possible | 29° /18° | 0.1 mm | 5 | |
| May 17 | Sunny | 30° /19° | 0 mm | 6 | |
| May 18 | Patchy rain possible | 23° /11° | 0 mm | 6 | |
| May 19 |  Patchy light rain with thunder | 23° /14° | 33.4 mm | 5 | |
| May 20 | Patchy light rain with thunder | 22° /15° | 27.4 mm | 5 | |
| May 21 | Patchy light rain with thunder | 22° /14° | 8.4 mm | 5 | |
| May 22 | Light rain shower | 19° /10° | 0.5 mm | 5 | |
| May 23 | Sunny | 22° /10° | 0 mm | 6 | |
| May 24 |  Moderate or heavy rain with thunder | 23° /13° | 10.6 mm | 6 | |
| May 25 | Overcast | 19° /10° | 0 mm | 4 | |
| May 26 | Moderate or heavy rain with thunder | 21° /10° | 7.6 mm | 5 | |
| May 27 | Patchy rain possible | 20° /12° | 1.4 mm | 5 | |
| May 28 | Patchy light drizzle | 20° /13° | 0.6 mm | 5 | |
| May 29 | Patchy rain possible | 19° /9° | 0.1 mm | 5 | |
| May 30 | Sunny | 23° /12° | 0 mm | 6 | |
| May 31 | Overcast | 25° /14° | 7.7 mm | 6 | |
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Important Notice
Our weather forecast for Peoria 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 Peoria County forecast closer to your planned date for the most up-to-date weather information.
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Peoria County in May - FAQ
What are the expected maximum and minimum temperatures in Peoria County during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Peoria County during May?
Significant rainfall exceeding 235.8 mm is expected in Peoria 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 Peoria County during May?
The average wind speed in Peoria County during May is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Peoria County
Explore the daily rainfall trends and prepare for Peoria Countys May weather 💧
Typically, Peoria County has 17 rainy days in May with a total of 235.8 mm of rainfall.
UV exposure in Peoria County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Peoria County?Get accurate weather forecasts for Peoria County, located at latitude 40.694 and longitude -89.589. Stay updated with localized weather information tailored for Peoria County.
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