I did a search on penn states website and came up with this link below.
I'm in Butler county, is there anything specific you want info on?? Maybe I could tell you when I plant mine.

Here is a link that might be useful: Penn state vegetable planting guide.

I believe I may start planting according to soil temperature rather than proposed dates.
Temp. fluctuations seem to far gone any more.

Johnny's Selected Seeds has a chart for every general type of seed that gives germination temperatures, so if you decide to use soil temperature, that will give you both optimal and suboptimal germination temperatures.