Frost dates for Detroit

◇ Station-based · 88/100 confidence

Last spring frost · safe

Apr 29

~10% frost risk · typical Apr 15

First fall frost · safe

Oct 19

~10% frost risk · typical Oct 31

Frost-free days

194

Apr 15 → Oct 31

Climate zone

Continental, hot summer

Köppen Dfa

The growing year

Frost-bounded season with crops mapped onto the 12-month axis.

Frost risk Growing Harvest

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

FROST

GROWING SEASON — 194 DAYS

APR 15

OCT 31