Jun 8, 2024 · September, the first month of the autumn in Weather, is also an agreeable month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 72.3°F (22.4°C).

Pennsylvania weather in September: average 26°C highs, 108mm rain. Compare cities on the map & find the best spots to visit.

This page compares the average temperature and precipitation in September in all fifty U.S. states. It is based on the average temperature over the entire territory of the state between 1991–2020.

Dec 4, 2025 · September ushers in the season of fall and cooler temperatures, but this month has a lot more up its sleeve in terms of weather. Here’s what else you can expect.

Average temperatures for September at places in Pennsylvania, including a list of monthly high and low temperatures for cities, towns, parks and lakes in degrees Fahrenheit and Celsius.

Get the monthly weather forecast for Philadelphia, PA, including daily high/low, historical averages, to help you plan ahead.

Oct 11, 2021 · We show the September climate in Pennsylvania by comparing the average September weather in 4 representative places: Philadelphia, Pittsburgh, Erie, and Scranton.

Here, you have access to the weather forecast for the month of september for most popular cities in United States. These forecasts are statistics for the month of september from weather reports for …

We provide day and night temperature, sunshine hours, sea temperature and rainfall averages for USA in September.

Oct 15, 2025 · But will September actually bring a cooldown or will it pack a last punch of sweltering summer heat? Check out whether above average warmth is in your forecast or if you’re one of the …