Pittsburgh weather in September 2026

Expect daytime maximum temperatures of 24°C in Pittsburgh, Pennsylvania in September based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 81 mm of rainfall in the month.

  • 24°C maximum daytime temperature in September in Pittsburgh24
    24°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in September in Pittsburgh10
    10 days with some rainfall
  • 12°C minimum night-time temperature in September in Pittsburgh12
    12°C min night temperature
  • 12 hours of daylight per day in September in Pittsburgh12
    12 hours of daylight per day
  • No heat & humidity in September in Pittsburgh0
    No heat & humidity
  • 81 mm monthly rainfall in September in Pittsburgh81
    81 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Pittsburgh6
    6 (High) UV index

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The September weather guide for Pennsylvania (Pittsburgh) 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 Pittsburgh in September?

Daytime temperatures usually reach 25°C in Pittsburgh in September with no heat and humidity, falling to 14°C at night.

How sunny is it in Pittsburgh in September?

There are normally 7 hours of bright sunshine each day in Pittsburgh in September - that's 58% of daylight hours.

Does it rain in Pittsburgh in September?

There are usually 8 days with some rain in Pittsburgh in September and the average monthly rainfall is 91mm.

What is the chance of a hurricane in Pittsburgh in September?

On average less than 1 day in September in Pittsburgh is likely to be affected by the passage of one or more tropical storms.

Pittsburgh September sunrise & sunset times

Browse the sunrise and sunset times for Pittsburgh in September 2026. Select a month to view Pittsburgh sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:47 18:52
Tuesday, 15th September 2026 06:01 18:29
Wednesday, 30th September 2026 06:15 18:04

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