Allentown weather in September 2020

  • 24°C maximum daytime temperature in September in Allentown24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in Allentown9
    9 days with some rainfall
  • 12°C minimum night-time temperature in September in Allentown12
    12°C min night temperature
  • 12 hours of daylight per day in September in Allentown12
    12 hours of daylight per day
  • No heat & humidity in September in Allentown0
    No heat & humidity
  • 101 mm monthly rainfall in September in Allentown101
    101 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Allentown6
    6 (High) UV index
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The September weather guide for Allentown, Pennsylvania 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.

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How hot is it in Allentown in September?

Daytime temperatures usually reach 24°C in Allentown in September, falling to 12°C at night.

How sunny is it in Allentown in September?

There are normally 7 hours of bright sunshine each day in Allentown in September - that's 56% of daylight hours.

Does it rain in Allentown in September?

There are usually 9 days with some rain in Allentown in September and the average monthly rainfall is 101mm.

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

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

Allentown sunrise & sunset times for September 2020

Browse the sunrise & sunset times for Allentown in September 2020. Select a month to view Allentown sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Tuesday, 1st September 2020 06:30 19:33
Tuesday, 15th September 2020 06:43 19:10
Wednesday, 30th September 2020 06:58 18:45
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's hot in Pennsylvania in September?

Below are average maximum temperatures at popular destinations in Pennsylvania in September. Select a destination to see more weather parameters.

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