Day hiking in Shenandoah National park area

May will be the coolest.  Both May and September are very unpredictable, though, temperature-wise.  You could easily get heat and humidity or much cooler temps.  July is almost always hot and humid.

The further you are from summer, the fewer bugs you’ll encounter.

Thanks Brad,

I kind of guessed July would be hot. Would I be right to assume Sept will be less buggy than May?

Would I be right to assume Sept will be less buggy than May?

They’re about the same.  It varies by year.

I’d probably go with September.  On average, it’s less rainy.

I will plan for September so.  Will be driving  with a rv from Michigan so may make it a 2 week trip.