37.6391°N/120.9969°W
When to plant in Modesto
California, United States · Cold semi-arid (Köppen BSk)
Last spring frost · safe
Feb 24
~10% frost risk · typical Jan 27
First fall frost · safe
Nov 21
~10% frost risk · typical Dec 3
Frost-free days
310
Jan 27 → Dec 3
Climate zone
Cold semi-arid
Köppen BSk
87/100 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
GROWING SEASON — 310 DAYS
JAN 27
DEC 3
Full crop calendar
Same climate — Cold semi-arid
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 Modesto.