61.2181°N/149.9003°W
When to plant in Anchorage
Alaska, United States · Continental, dry cold summer (Köppen Dsc)
Last spring frost · safe
May 8
~10% frost risk · typical Apr 30
First fall frost · safe
Sep 12
~10% frost risk · typical Sep 26
Frost-free days
148
Apr 30 → Sep 26
Climate zone
Continental, dry cold summer
Köppen Dsc
85/100 confidence
◇ Station-based
The frost date shown is the safe date (~10% frost risk); the typical median is shown alongside. Your microclimate can shift things ±1–2 weeks.
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 — 148 DAYS
APR 30
SEP 26
Full crop calendar
Source: Curated · based on NOAA GHCN-Daily 1991–2020 normal · Köppen–Geiger classification (Beck et al. 2023) · crop windows from FAO ECOCROP references. How we calculate this →
Also see frost dates for Anchorage.