Typical Weather in Altoona, PA in September

72° F Avg High

53° F Avg Low

7 Rainy Days

☀️ Temperature Summary

September is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Highs in September are typically around 72°F, which is warmer than usual in Altoona. You can expect overnight lows near 53°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 75°F and 66°F.

September is a great time to visit Altoona, with mild temperatures and sunny days being very common.

High Temps Throughout the Year

☔ Rain Summary

In September you can expect close to a 23% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 4 inches.