Contributed by: MarvinM92
These 2 charts are the average first and last
frost in the U.S. & Canada... A frost is when the
outside temperature is 32*F or below... Chances of a
frost after the spring date and before the fall date are
about 50%... Since it is an average, dates will vary
from year to year...
Average First and Last
Frost in the U.S.
Average First and Last Frost in Canada