Hi & welcome!
According to the zone map (accessible on this site, put your ZIP code in the box) here:
https://garden.org/nga/zipzone...
you are in Z5b.
Clicking on the "View our Planting Calendar for your area" link leads to the information you seek:
https://garden.org/apps/calend...
"On average, your frost-free growing season starts Apr 29 and ends Oct 9, totalling 163 days."
As soon as you can get a forecast through the end of April, you should know when you've seen the last of Jack Frost this spring.