Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in 93930

The short answer

93930 averages 793 chill hours per winter (6131,186 across 10 years) in USDA zone 9a.
93930 climate
Average chill hours793 (613–1,186 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 26 – February 24
First fall frosttypically December 13 – December 26

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 93930’s chill hours and zone:

Marginal (13)

Possible in a good year or a favorable microclimate — click through for the caveats.

Marginal varieties for this location
VarietyFruit
GoldcotApricot
HarkoNectarine
MericrestNectarine
CresthavenPeach
RedhavenPeach
D'AnjouPear
Harrow DelightPear
Blue DamsonPlum
French Improved PrunePlum
Italian PrunePlum
StanleyPlum
SunburstSweet Cherry
MeteorTart Cherry
How many chill hours does 93930 get?
93930 averages 793 chill hours per winter, ranging from 613 to 1186 across the last 10 years.
What hardiness zone is 93930?
93930 is in USDA hardiness zone 9a.

Growing fruit trees in 93930? Get a care calendar anchored to this exact climate, with email reminders.

Start My Orchard

Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026