Frost.aa.zip -

or below): Widespread ice formation that can severely damage or kill most unprotected vegetation. Hard Freeze ( 28∘F28 raised to the composed with power F

This is the window between your last spring frost and first fall frost when warm-weather plants thrive.

These dates represent a 30% to 50% probability that frost will occur after the spring date or before the fall date. Local microclimates—such as being under a tree canopy or near a body of water—can shift these dates significantly. Frost vs. Freeze: Why the Distinction Matters