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Weather in Pennsylvania for May 2025

Your guide to Pennsylvania weather in May - trends and predictions

    Temperatures

  • 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.

  • Rain 🌧️

  • Pennsylvania experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 116.6 mm.

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Average dry days
7
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/10°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Pennsylvania Weather May

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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
Moderate or heavy rain shower
20° /7° 4.2 mm 5
May 2 Moderate rain at times
Moderate rain at times
18° /9° 28.4 mm 4
May 3 Heavy rain at times
Heavy rain at times
19° /10° 36.9 mm 4
May 4 Moderate or heavy rain shower
Moderate or heavy rain shower
17° /10° 15 mm 4
May 5 Overcast
Overcast
20° /10° 4 mm 5
May 6 Sunny
Sunny
20° /10° 8.7 mm 5
May 7 Moderate or heavy rain shower
Moderate or heavy rain shower
21° /12° 10.8 mm 5
May 8 Overcast
Overcast
23° /13° 1.3 mm 5
May 9 Heavy rain at times
Heavy rain at times
17° /9° 5.1 mm 4
May 10 Partly cloudy
Partly cloudy
19° /6° 0.3 mm 5
May 11 Partly cloudy
Partly cloudy
20° /8° 1.7 mm 5
May 12 Overcast
Overcast
21° /10° 1.7 mm 5
May 13 Moderate or heavy rain shower
Moderate or heavy rain shower
21° /12° 43.8 mm 5
May 14 Light rain shower
Light rain shower
21° /13° 6.5 mm 5
May 15 Sunny
Sunny
25° /12° 1.3 mm 6
May 16 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /13° 5.5 mm 5
May 17 Overcast
Overcast
22° /11° 16.2 mm 5
May 18 Sunny
Sunny
23° /9° 2.3 mm 6
May 19 Cloudy
Cloudy
18° /10° 0 mm 2
May 20 Overcast
Overcast
16° /6° 0 mm 1.7
May 21 Moderate rain
Moderate rain
12° /10° 5.9 mm 0.2
May 22 Patchy rain possible
Patchy rain possible
10° /8° 2.8 mm 0
May 23 Patchy rain possible
Patchy rain possible
16° /5° 0.4 mm 3
May 24 Overcast
Overcast
17° /5° 0 mm 3
May 25 Patchy rain possible
Patchy rain possible
18° /11° 0.1 mm 3
May 26 Heavy rain
Heavy rain
15° /10° 28.8 mm 3
May 27 Patchy rain possible
Patchy rain possible
17° /8° 0.5 mm 3
May 28 Patchy rain possible
Patchy rain possible
20° /6° 1.5 mm 3
May 29 Patchy rain possible
Patchy rain possible
23° /10° 0.6 mm 4
May 30 Patchy rain possible
Patchy rain possible
25° /11° 0.4 mm 4
May 31 Patchy rain possible
Patchy rain possible
27° /15° 0.1 mm 5
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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 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
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Location coordinates 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.

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