Effingham (IL)
May
Weather in Effingham, Illinois for May 2027
Your guide to Effingham weather in May - trends and predictions
In general, the average temperature in Effingham at the beginning of May is 16.7 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.1 °C by the end of May.
Effingham experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 179.5 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
20°/12°
Temperatures
21 km/h
Avg max wind
79 %
Avg humidity
Effingham Weather May
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Temperatures trend during May in Effingham
See the weather trend as well as the moving average line
May weather in Effingham day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy rain shower | 18° /11° | 7.4 mm | 7 | |
| May 2 | Moderate rain at times | 16° /10° | 1.3 mm | 6 | |
| May 3 | Moderate or heavy rain shower | 17° /7° | 12.4 mm | 7 | |
| May 4 |  Heavy rain at times | 16° /9° | 4.8 mm | 4 | |
| May 5 |  Patchy rain possible | 16° /8° | 15.4 mm | 3 | |
| May 6 |  Overcast | 16° /7° | 1.1 mm | 3 | |
| May 7 | Patchy rain possible | 18° /8° | 0.2 mm | 8 | |
| May 8 | Patchy rain possible | 20° /8° | 5.8 mm | 8 | |
| May 9 |  Cloudy | 22° /9° | 4 mm | 8 | |
| May 10 |  Sunny | 21° /9° | 2.3 mm | 8 | |
| May 11 | Cloudy | 23° /9° | 0 mm | 8 | |
| May 12 | Moderate or heavy rain shower | 22° /11° | 7.8 mm | 8 | |
| May 13 | Patchy rain possible | 22° /13° | 1.6 mm | 8 | |
| May 14 | Overcast | 23° /11° | 0.1 mm | 8 | |
| May 15 | Patchy rain possible | 26° /15° | 2.8 mm | 8 | |
| May 16 | Moderate or heavy rain shower | 26° /18° | 6.8 mm | 6 | |
| May 17 |  Partly cloudy | 24° /16° | 0 mm | 8 | |
| May 18 | Overcast | 23° /16° | 13.8 mm | 7 | |
| May 19 | Overcast | 26° /15° | 5.3 mm | 6 | |
| May 20 | Moderate or heavy rain shower | 21° /14° | 18 mm | 4 | |
| May 21 | Sunny | 20° /12° | 0 mm | 5 | |
| May 22 | Patchy rain possible | 17° /11° | 9.2 mm | 4 | |
| May 23 | Cloudy | 21° /10° | 0 mm | 4 | |
| May 24 | Overcast | 22° /14° | 1.9 mm | 5 | |
| May 25 | Overcast | 20° /13° | 0 mm | 8 | |
| May 26 | Moderate rain at times | 20° /11° | 5.7 mm | 7 | |
| May 27 |  Heavy rain | 22° /15° | 23.5 mm | 6 | |
| May 28 | Light rain shower | 23° /15° | 2.9 mm | 8 | |
| May 29 |  Fog | 21° /12° | 0 mm | 8 | |
| May 30 | Fog | 27° /14° | 0 mm | 8 | |
| May 31 | Overcast | 29° /15° | 1.9 mm | 9 | |
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Important Notice
Our weather forecast for Effingham 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 Effingham forecast closer to your planned date for the most up-to-date weather information.
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Effingham in May - FAQ
What are the expected maximum and minimum temperatures in Effingham during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Effingham during May?
Significant rainfall exceeding 179.5 mm is expected in Effingham during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Effingham during May?
The average wind speed in Effingham during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Effingham
Explore the daily rainfall trends and prepare for Effinghams May weather 💧
Typically, Effingham has 22 rainy days in May with a total of 179.5 mm of rainfall.
UV exposure in Effingham during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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