Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in 92338

The short answer

92338 averages 762 chill hours per winter (4851,113 across 10 years) in USDA zone 9a.
92338 climate
Average chill hours762 (485–1,113 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 12 – February 24
First fall frosttypically November 26 – December 21

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 92338’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 92338 get?
92338 averages 762 chill hours per winter, ranging from 485 to 1113 across the last 10 years.
What hardiness zone is 92338?
92338 is in USDA hardiness zone 9a.

Growing fruit trees in 92338? 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