Peak Foliage Pa 2025. The dcnr expects the colors of the northern hardwoods to reach their peak in the first full week of october and the oaks in late october. Daily updates begin on september 1st.

The foliage is expected to peak for much of the eastern, southern, and western parts of the state. The pennsylvania department of conservation and natural resources is once again preparing to share their weekly predictions of fall foliage across the state.