Champaign (IL)
May
Weather in Champaign, Illinois for May 2026
Your guide to Champaign weather in May - trends and predictions
In general, the average temperature in Champaign at the beginning of May is 17.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 18.6 °F by the end of May.
The climate of Champaign in May is notably wet, with an average of 11 rainy days, and a total of 81.6 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
20°/11°
Temperatures
22 km/h
Avg max wind
75 %
Avg humidity
Champaign Weather May
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Temperatures trend during May in Champaign
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May weather in Champaign day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy rain shower | 22° /16° | 13.8 mm | 5 | |
| May 2 |  Overcast | 19° /13° | 0 mm | 4 | |
| May 3 |  Heavy rain at times | 16° /10° | 6.5 mm | 4 | |
| May 4 | Moderate or heavy rain shower | 9° /6° | 9 mm | 2 | |
| May 5 |  Patchy rain possible | 15° /7° | 0.7 mm | 4 | |
| May 6 | Overcast | 19° /9° | 0 mm | 4 | |
| May 7 | Overcast | 23° /13° | 0 mm | 5 | |
| May 8 | Moderate rain at times | 20° /8° | 0.9 mm | 5 | |
| May 9 |  Cloudy | 20° /6° | 0 mm | 5 | |
| May 10 |  Sunny | 25° /7° | 0 mm | 7 | |
| May 11 |  Partly cloudy | 25° /8° | 0 mm | 7 | |
| May 12 | Moderate or heavy rain shower | 22° /13° | 7.6 mm | 5 | |
| May 13 | Patchy rain possible | 23° /16° | 0.4 mm | 5 | |
| May 14 | Patchy rain possible | 25° /16° | 0.1 mm | 6 | |
| May 15 | Overcast | 29° /18° | 12.3 mm | 6 | |
| May 16 | Patchy rain possible | 28° /17° | 0.2 mm | 6 | |
| May 17 | Overcast | 20° /13° | 0 mm | 5 | |
| May 18 | Overcast | 20° /9° | 0 mm | 5 | |
| May 19 | Overcast | 22° /9° | 0 mm | 5 | |
| May 20 | Moderate or heavy rain shower | 22° /14° | 28.3 mm | 5 | |
| May 21 | Patchy rain possible | 17° /11° | 1 mm | 4 | |
| May 22 | Patchy rain possible | 14° /9° | 0.8 mm | 3 | |
| May 23 | Cloudy | 19° /8° | 0 mm | 4 | |
| May 24 | Overcast | 20° /10° | 0 mm | 5 | |
| May 25 | Overcast | 14° /9° | 0 mm | 3 | |
| May 26 | Overcast | 16° /6° | 0 mm | 4 | |
| May 27 | Overcast | 15° /12° | 0 mm | 4 | |
| May 28 | Overcast | 19° /13° | 0 mm | 4 | |
| May 29 |  Mist | 19° /12° | 0 mm | 4 | |
| May 30 |  Thundery outbreaks possible | 22° /12° | 0 mm | 5 | |
| May 31 | Sunny | 25° /15° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Champaign 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 Champaign forecast closer to your planned date for the most up-to-date weather information.
Change Month
Champaign in May - FAQ
What are the expected maximum and minimum temperatures in Champaign during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Champaign during May?
Moderate rainfall is anticipated in Champaign during May, with a total of 81.6 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Champaign during May?
The average wind speed in Champaign during May is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Champaign
Explore the daily rainfall trends and prepare for Champaigns May weather 💧
UV exposure in Champaign during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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