Pennsylvania (Pittsburgh)
May
Weather in Pennsylvania for May 2025
Your guide to Pennsylvania weather in May - trends and predictions
So far, May 2025 in Pennsylvania is slightly warmer than the historical average by 1.5 °F.
The forecast for the upcoming days in Pennsylvania predicts a temperature of 18.9 °F, which is slightly above the historical average.
In general, the average temperature in Pennsylvania at the beginning of May is 19.3 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.7 °F by the end of May.
Pennsylvania experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 116.6 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
7
Dry days
24
Rainy days
0
Snow days
21°/10°
Temperatures
13 km/h
Avg max wind
75 %
Avg humidity
Pennsylvania Weather May
Move between months or click on a day
Temperatures trend during May in Pennsylvania
See the weather trend as well as the moving average line
May weather in Pennsylvania day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy rain shower | 20° /7° | 4.2 mm | 5 | |
| May 2 | Moderate rain at times | 18° /9° | 28.4 mm | 4 | |
| May 3 |  Heavy rain at times | 19° /10° | 36.9 mm | 4 | |
| May 4 | Moderate or heavy rain shower | 17° /10° | 15 mm | 4 | |
| May 5 |  Overcast | 20° /10° | 4 mm | 5 | |
| May 6 |  Sunny | 20° /10° | 8.7 mm | 5 | |
| May 7 | Moderate or heavy rain shower | 21° /12° | 10.8 mm | 5 | |
| May 8 | Overcast | 23° /13° | 1.3 mm | 5 | |
| May 9 | Heavy rain at times | 17° /9° | 5.1 mm | 4 | |
| May 10 |  Partly cloudy | 19° /6° | 0.3 mm | 5 | |
| May 11 | Partly cloudy | 20° /8° | 1.7 mm | 5 | |
| May 12 | Overcast | 21° /10° | 1.7 mm | 5 | |
| May 13 | Moderate or heavy rain shower | 21° /12° | 43.8 mm | 5 | |
| May 14 |  Light rain shower | 21° /13° | 6.5 mm | 5 | |
| May 15 | Sunny | 25° /12° | 1.3 mm | 6 | |
| May 16 | Moderate or heavy rain shower | 23° /13° | 5.5 mm | 5 | |
| May 17 | Overcast | 22° /11° | 16.2 mm | 5 | |
| May 18 | Sunny | 23° /9° | 2.3 mm | 6 | |
| May 19 |  Cloudy | 18° /10° | 0 mm | 2 | |
| May 20 | Overcast | 16° /6° | 0 mm | 1.7 | |
| May 21 |  Moderate rain | 12° /10° | 5.9 mm | 0.2 | |
| May 22 | Patchy rain possible | 10° /8° | 2.8 mm | 0 | |
| May 23 | Patchy rain possible | 16° /5° | 0.4 mm | 3 | |
| May 24 | Overcast | 17° /5° | 0 mm | 3 | |
| May 25 | Patchy rain possible | 18° /11° | 0.1 mm | 3 | |
| May 26 |  Heavy rain | 15° /10° | 28.8 mm | 3 | |
| May 27 | Patchy rain possible | 17° /8° | 0.5 mm | 3 | |
| May 28 | Patchy rain possible | 20° /6° | 1.5 mm | 3 | |
| May 29 | Patchy rain possible | 23° /10° | 0.6 mm | 4 | |
| May 30 | Patchy rain possible | 25° /11° | 0.4 mm | 4 | |
| May 31 | Patchy rain possible | 27° /15° | 0.1 mm | 5 | |
| Next | |||||
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.
Change Month
Pennsylvania in May - FAQ
What are the expected maximum and minimum temperatures in Pennsylvania during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Pennsylvania during May?
Significant rainfall exceeding 116.6 mm is expected in Pennsylvania during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Pennsylvania during May?
The average wind speed in Pennsylvania during May is 13 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 ☀️
Counties in Pennsylvania
Select a county for an accurate weather forecast
Top locations in Pennsylvania
Select a location for an accurate weather forecast
More Locations Quick links
More Pennsylvania weather pages
You are here
Where is Pennsylvania?Get accurate weather forecasts for Pennsylvania, located at latitude 40.441 and longitude -79.996. Stay updated with localized weather information tailored for Pennsylvania.
Found a mistake?
We appreciate your attention to details. Tell us here.