Wilmington (DE)
May
Weather in Wilmington, Delaware for May 2026
Your guide to Wilmington weather in May - trends and predictions
Until now, May 2026 in Wilmington has been nearly identical to the historical average, with a temperature of 20.5 °F (showing only a slight deviation of -0.4 °F).
The forecast for the upcoming days in Wilmington predicts a temperature of 24.8 °F, which is slightly above the historical average.
In general, the average temperature in Wilmington at the beginning of May is 21.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 23.3 °F by the end of May.
Wilmington in May brings notable rainfall, with an average of 20 rainy days and a total precipitation of 271.7 mm.
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Temperatures
Rain 🌧️
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11
Dry days
20
Rainy days
0
Snow days
21°/12°
Temperatures
18 km/h
Avg max wind
72 %
Avg humidity
Wilmington Weather May
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Temperatures trend during May in Wilmington
See the weather trend as well as the moving average line
May weather in Wilmington day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 19° /8° | 0 mm | 9 | |
| May 2 |  Overcast | 21° /10° | 0.5 mm | 8 | |
| May 3 |  Moderate or heavy rain shower | 22° /11° | 4.7 mm | 9 | |
| May 4 | Moderate or heavy rain shower | 21° /12° | 6.5 mm | 7 | |
| May 5 | Moderate or heavy rain shower | 23° /15° | 2 mm | 6 | |
| May 6 | Moderate or heavy rain shower | 21° /15° | 9.9 mm | 4 | |
| May 7 | Overcast | 21° /11° | 6.1 mm | 7 | |
| May 8 |  Patchy rain possible | 21° /10° | 0.4 mm | 8 | |
| May 9 | Moderate or heavy rain shower | 17° /10° | 8.2 mm | 4 | |
| May 10 |  Sunny | 23° /9° | 5.2 mm | 10 | |
| May 11 |  Partly cloudy | 19° /10° | 0 mm | 7 | |
| May 12 | Overcast | 22° /10° | 0 mm | 9 | |
| May 13 | Moderate or heavy rain shower | 22° /13° | 9 mm | 5 | |
| May 14 | Moderate or heavy rain shower | 17° /12° | 6.1 mm | 3 | |
| May 15 | Moderate or heavy rain shower | 20° /13° | 5.9 mm | 4 | |
| May 16 | Moderate or heavy rain shower | 25° /13° | 1.9 mm | 6 | |
| May 17 | Moderate rain at times | 28° /18° | 0.5 mm | 7 | |
| May 18 | Patchy rain possible | 27° /16° | 0.1 mm | 11 | |
| May 19 | Sunny | 28° /16° | 0.8 mm | 10 | |
| May 20 | Overcast | 24° /14° | 2.8 mm | 10 | |
| May 21 |  Heavy rain at times | 13° /10° | 12.8 mm | 2 | |
| May 22 | Moderate rain at times | 17° /10° | 11.3 mm | 5 | |
| May 23 | Moderate rain at times | 13° /9° | 14.6 mm | 3 | |
| May 24 | Patchy rain possible | 18° /10° | 8 mm | 7 | |
| May 25 | Cloudy | 20° /10° | 2.3 mm | 7 | |
| May 26 | Partly cloudy | 23° /14° | 0 mm | 11 | |
| May 27 | Patchy rain possible | 29° /17° | 0.7 mm | 3 | |
| May 28 | Patchy rain possible | 25° /15° | 0.7 mm | 7.9 | |
| May 29 | Sunny | 23° /11° | 0 mm | 7.9 | |
| May 30 | Sunny | 21° /11° | 0 mm | 7.9 | |
| May 31 | Sunny | 22° /8° | 0 mm | 1 | |
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Important Notice
Our weather forecast for Wilmington 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 Wilmington forecast closer to your planned date for the most up-to-date weather information.
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Wilmington in May - FAQ
What are the expected maximum and minimum temperatures in Wilmington 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 Wilmington during May?
Significant rainfall exceeding 271.7 mm is expected in Wilmington during May, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Wilmington during May?
The average wind speed in Wilmington during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Wilmington
Explore the daily rainfall trends and prepare for Wilmingtons May weather 💧
Typically, Wilmington has 20 rainy days in May with a total of 271.7 mm of rainfall.
UV exposure in Wilmington during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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