Delaware County (Glen Mills)
May
Weather in Delaware County, Pennsylvania for May 2027
Your guide to Delaware County weather in May - trends and predictions
In general, the average temperature in Delaware County at the beginning of May is 20.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22 °C by the end of May.
The climate of Delaware County in May is notably wet, with an average of 15 rainy days, and a total of 252.9 mm of precipitation.
Is May a good time to visit Delaware County? check out the best time to travel to Delaware County page.
✨ Is May a good time to visit Delaware County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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16
Dry days
15
Rainy days
0
Snow days
21°/12°
Temperatures
17 km/h
Avg max wind
75 %
Avg humidity
Delaware County Weather May
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Temperatures trend during May in Delaware County
See the weather trend as well as the moving average line
May weather in Delaware County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Light rain shower | 19° /9° | 1.9 mm | 6 | |
| May 2 |  Partly cloudy | 22° /12° | 0 mm | 7 | |
| May 3 | Patchy rain possible | 22° /11° | 2.4 mm | 7 | |
| May 4 |  Light rain | 18° /11° | 8 mm | 6 | |
| May 5 |  Moderate rain | 20° /13° | 9.1 mm | 5 | |
| May 6 | Light rain | 20° /15° | 6.7 mm | 5 | |
| May 7 | Light rain | 20° /13° | 4 mm | 6 | |
| May 8 | Light rain | 22° /13° | 3 mm | 7 | |
| May 9 |  Heavy rain | 18° /11° | 40.5 mm | 5 | |
| May 10 | Light rain | 19° /8° | 6.7 mm | 6 | |
| May 11 | Patchy rain possible | 17° /9° | 0.5 mm | 4 | |
| May 12 | Light rain shower | 18° /9° | 1.9 mm | 6 | |
| May 13 | Light rain | 20° /11° | 3.4 mm | 6 | |
| May 14 | Moderate rain | 17° /12° | 20.7 mm | 4 | |
| May 15 | Light rain | 18° /13° | 7.1 mm | 4 | |
| May 16 | Light rain | 21° /13° | 7.7 mm | 6 | |
| May 17 | Patchy rain possible | 25° /17° | 1.1 mm | 7 | |
| May 18 | Light drizzle | 24° /15° | 0.2 mm | 6 | |
| May 19 |  Fog | 25° /14° | 0.2 mm | 7 | |
| May 20 | Patchy rain possible | 24° /13° | 1.6 mm | 7 | |
| May 21 | Heavy rain | 19° /11° | 31 mm | 5 | |
| May 22 | Light rain | 20° /12° | 8.8 mm | 6 | |
| May 23 | Moderate rain | 17° /11° | 11.9 mm | 4 | |
| May 24 | Light rain | 20° /11° | 5.5 mm | 4 | |
| May 25 | Patchy rain possible | 22° /12° | 2.3 mm | 4 | |
| May 26 |  Thundery outbreaks possible | 25° /15° | 1.7 mm | 8 | |
| May 27 | Moderate rain | 23° /16° | 11 mm | 5 | |
| May 28 | Heavy rain | 20° /13° | 25.8 mm | 6 | |
| May 29 |  Patchy light rain with thunder | 22° /12° | 2.8 mm | 7 | |
| May 30 | Moderate rain | 21° /14° | 16.5 mm | 7 | |
| May 31 | Light rain | 22° /11° | 9 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Delaware 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 Delaware County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Delaware County in May - FAQ
What are the expected maximum and minimum temperatures in Delaware 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 Delaware County during May?
Significant rainfall exceeding 252.9 mm is expected in Delaware County during May, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Delaware County during May?
The average wind speed in Delaware County during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Delaware County
Explore the daily rainfall trends and prepare for Delaware Countys May weather 💧
Typically, Delaware County has 15 rainy days in May with a total of 252.9 mm of rainfall.
UV exposure in Delaware County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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