Pennsylvania weather in May 2025

Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Pennsylvania in May. Check more long-term weather averages for Pennsylvania in May before you book your next holiday to Pennsylvania in 2025/2026.

  • 23°C maximum daytime temperature in May in Pennsylvania (Philadelphia)23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Pennsylvania (Philadelphia)11
    11 days with some rainfall
  • 11°C minimum night-time temperature in May in Pennsylvania (Philadelphia)11
    11°C min night temperature
  • 14 hours of daylight per day in May in Pennsylvania (Philadelphia)14
    14 hours of daylight per day
  • No heat & humidity in May in Pennsylvania (Philadelphia)0
    No heat & humidity
  • 100 mm monthly rainfall in May in Pennsylvania (Philadelphia)100
    100 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Pennsylvania (Philadelphia)8
    8 (Very High) UV index

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The May weather guide for Pennsylvania (Philadelphia) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Pennsylvania destinations

Below are average maximum temperatures at popular countries, regions and places in Pennsylvania in May. Select a holiday destination to see more weather parameters.

All Pennsylvania destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Pennsylvania in May?

Daytime temperatures usually reach 23°C in Philadelphia, Pennsylvania in May, falling to 11°C at night.

How sunny is it in Pennsylvania in May?

There are normally 8 hours of bright sunshine each day in Philadelphia, Pennsylvania in May - that's 55% of daylight hours.

Does it rain in Pennsylvania in May?

There are usually 11 days with some rain in Philadelphia, Pennsylvania in May and the average monthly rainfall is 100mm.

Pennsylvania May sunrise & sunset times

Browse the sunrise and sunset times for Pennsylvania in May 2025. Select a month to view Pennsylvania sunrise and sunset times for the next 12 months. The Pennsylvania sunrise and sunset times shown below are for Philadelphia.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:00 18:56
Friday, 16th May 2025 04:44 19:10
Saturday, 31st May 2025 04:34 19:23

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