Frost dates for Toronto
◇ Station-measured · 88/100 confidence
Last spring frost (50%)
May 9
10% risk to May 26
First fall frost (50%)
Oct 6
10% risk from Sep 19
Frost-free days
150
May 9 → Oct 6
Köppen
Dfb
Continental, warm summer
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
FROST
GROWING SEASON — 150 DAYS
MAY 9
OCT 6