Pennsylvania weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Pennsylvania in August. Check more long-term weather averages for Pennsylvania in August before you book your next holiday to Pennsylvania in 2025/2026.

  • 29°C maximum daytime temperature in August in Pennsylvania (Philadelphia)29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in August in Pennsylvania (Philadelphia)9
    9 days with some rainfall
  • 19°C minimum night-time temperature in August in Pennsylvania (Philadelphia)19
    19°C min night temperature
  • 14 hours of daylight per day in August in Pennsylvania (Philadelphia)14
    14 hours of daylight per day
  • Moderate heat & humidity in August in Pennsylvania (Philadelphia)M
    Moderate heat & humidity
  • 102 mm monthly rainfall in August in Pennsylvania (Philadelphia)102
    102 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Pennsylvania (Philadelphia)8
    8 (Very High) UV index

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The August 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 August. 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 August?

Daytime temperatures usually reach 29°C in Philadelphia, Pennsylvania in August with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Pennsylvania in August?

There are normally 8 hours of bright sunshine each day in Philadelphia, Pennsylvania in August - that's 61% of daylight hours.

Does it rain in Pennsylvania in August?

There are usually 9 days with some rain in Philadelphia, Pennsylvania in August and the average monthly rainfall is 102mm.

What is the chance of a hurricane in Pennsylvania in August?

On average less than 1 day in August in Philadelphia, Pennsylvania is likely to be affected by the passage of one or more tropical storms.

Pennsylvania August sunrise & sunset times

Browse the sunrise and sunset times for Pennsylvania in August 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
Friday, 1st August 2025 04:59 19:14
Saturday, 16th August 2025 05:14 18:55
Sunday, 31st August 2025 05:28 18:33

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