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September Rainfall Precipitation in Pennsylvania

Pennsylvania is a region in the United States of America. In September precipitation ranges from moderate in Washington with 75 mm of rainfall to high in Hummelstown with 140 mm of rainfall.

Where and how much does it rain in Pennsylvania in September?

Find the average total precipitation in September for the most popular destinations in Pennsylvania on the map below. Click on a destination dot for more detailed information.

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Legend heavy rainfall high moderate low almost none
Heavy rainfall has been defined as more than 160 mm precipitation. High: 90 mm to 160 mm. Moderate: 30 mm to 90 mm. Low: 5 mm to 30 mm.

  • How much rainfall does Pennsylvania receive in September?
  • With an average precipitation of 108 mm, Philadelphia sees a good amount of rain in September. Unpredictable weather changes are a common sight.

  • What is the wettest city in September in Pennsylvania?
  • Based on our records, Hummelstown is the location with the highest average precipitation, receiving about 140 mm.

  • What is the driest city in September in Pennsylvania?
  • Based on our records, Washington registers the lowest average precipitation, with only 75 mm.

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