Lancaster weather in May 2025

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

  • 23°C maximum daytime temperature in May in Lancaster23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in May in Lancaster12
    12 days with some rainfall
  • 9°C minimum night-time temperature in May in Lancaster9
    9°C min night temperature
  • 14 hours of daylight per day in May in Lancaster14
    14 hours of daylight per day
  • No heat & humidity in May in Lancaster0
    No heat & humidity
  • 101 mm monthly rainfall in May in Lancaster101
    101 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Lancaster8
    8 (Very High) UV index

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The May weather guide for Pennsylvania (Lancaster) 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.

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

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How hot is it in Lancaster in May?

Daytime temperatures usually reach 23°C in Lancaster in May, falling to 9°C at night.

How sunny is it in Lancaster in May?

There are normally 8 hours of bright sunshine each day in Lancaster in May - that's 58% of daylight hours.

Does it rain in Lancaster in May?

There are usually 12 days with some rain in Lancaster in May and the average monthly rainfall is 101mm.

Lancaster May sunrise & sunset times

Browse the sunrise and sunset times for Lancaster in May 2025. Select a month to view Lancaster sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:05 19:00
Friday, 16th May 2025 04:49 19:15
Saturday, 31st May 2025 04:39 19:28

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