Frost dates are the average dates of the and the first fall frost . They are calculated based on historical climate data from the National Oceanic and Atmospheric Administration (NOAA) and are used to define a region's "growing season".
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 Frost.aa.zip
This is the window between your last spring frost and first fall frost when warm-weather plants thrive. Frost dates are the average dates of the
): May cause patchy damage to tender plants like tomatoes or basil. Freeze ( 32∘F32 raised to the composed with power F Frost.aa.zip