Frost dates for Toronto

◇ Station-based · 83/100 confidence

Last spring frost · safe

May 18

~10% frost risk · typical May 3

First fall frost · safe

Oct 2

~10% frost risk · typical Oct 12

Frost-free days

160

May 3 → Oct 12

Climate zone

Continental, warm summer

Köppen Dfb

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 — 160 DAYS

MAY 3

OCT 12