Pennsylvania (Philadelphia)
May
Weather in Pennsylvania for May 2025
Your guide to Pennsylvania weather in May - trends and predictions
In general, the average temperature in Pennsylvania at the beginning of May is 18.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.4 °F by the end of May.
Pennsylvania experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 88.6 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
22°/12°
Temperatures
16 km/h
Avg max wind
65 %
Avg humidity
Pennsylvania in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2  21° | 3  19° | 4 19° | |||
| 5 18° | 6  18° | 7 19° | 8 20° | 9 18° | 10 19° | 11  20° |
| 12 21° | 13 21° | 14 21° | 15  22° | 16 22° | 17 21° | 18 22° |
| 19 25° | 20 26° | 21 29° | 22 29° | 23 26° | 24 24° | 25 25° |
| 26 26° | 27 24° | 28 24° | 29 23° | 30 22° | 31 27° |
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Temperatures trend during May in Pennsylvania
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Sunny | 18° /9° | 2.6 mm | 5 | |
| May 2 | Patchy rain possible | 21° /10° | 2.3 mm | 5 | |
| May 3 | Moderate or heavy rain shower | 19° /10° | 3.8 mm | 5 | |
| May 4 | Patchy rain possible | 19° /10° | 6.2 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 18° /10° | 6.2 mm | 4 | |
| May 6 | Overcast | 18° /10° | 5.6 mm | 4 | |
| May 7 | Patchy rain possible | 19° /10° | 6.3 mm | 5 | |
| May 8 | Patchy rain possible | 20° /10° | 2.9 mm | 4 | |
| May 9 | Patchy rain possible | 18° /9° | 2.3 mm | 5 | |
| May 10 | Sunny | 19° /8° | 3.2 mm | 5 | |
| May 11 | Partly cloudy | 20° /9° | 0.1 mm | 6 | |
| May 12 | Partly cloudy | 21° /9° | 2.5 mm | 5 | |
| May 13 | Sunny | 21° /11° | 0.4 mm | 5 | |
| May 14 | Overcast | 21° /12° | 3.7 mm | 5 | |
| May 15 | Cloudy | 22° /12° | 2.1 mm | 5 | |
| May 16 | Cloudy | 22° /13° | 2.6 mm | 5 | |
| May 17 | Overcast | 21° /12° | 0 mm | 6 | |
| May 18 | Sunny | 22° /10° | 0.1 mm | 6 | |
| May 19 | Sunny | 25° /12° | 3.9 mm | 6 | |
| May 20 | Partly cloudy | 26° /14° | 0.6 mm | 7 | |
| May 21 | Partly cloudy | 29° /15° | 0.1 mm | 7 | |
| May 22 | Cloudy | 29° /16° | 1.5 mm | 7 | |
| May 23 | Partly cloudy | 26° /16° | 1 mm | 7 | |
| May 24 | Partly cloudy | 24° /14° | 0.1 mm | 6 | |
| May 25 | Sunny | 25° /13° | 0.1 mm | 6 | |
| May 26 | Patchy rain possible | 26° /14° | 1.1 mm | 6 | |
| May 27 | Cloudy | 24° /16° | 10.2 mm | 6 | |
| May 28 | Moderate or heavy rain shower | 24° /14° | 6.7 mm | 6 | |
| May 29 | Sunny | 23° /12° | 7.8 mm | 6 | |
| May 30 | Sunny | 22° /13° | 2.6 mm | 6 | |
| May 31 | Partly cloudy | 27° /12° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Pennsylvania 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 Pennsylvania forecast closer to your planned date for the most up-to-date weather information.
Pennsylvania in May - FAQ
What are the expected maximum and minimum temperatures in Pennsylvania during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Pennsylvania during May?
Moderate rainfall is anticipated in Pennsylvania during May, with a total of 88.6 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Pennsylvania during May?
The average wind speed in Pennsylvania during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Pennsylvania
Explore the daily rainfall trends and prepare for Pennsylvanias May weather 💧
UV exposure in Pennsylvania during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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