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Chill hours in 92373

The short answer

92373 averages 609 chill hours per winter (286977 across 10 years) in USDA zone 9b.
92373 climate
Average chill hours609 (286–977 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically January 26 – February 23

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 92373’s chill hours and zone:

Marginal (33)

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

Marginal varieties for this location
VarietyFruit
GravensteinApple
GoldcotApricot
HarcotApricot
Wenatchee MoorparkApricot
FlavortopNectarine
HarkoNectarine
IndependenceNectarine
MericrestNectarine
Belle of GeorgiaPeach
CresthavenPeach
ElbertaPeach
FlameprincePeach
FrostPeach
HarvesterPeach
LoringPeach
O'HenryPeach
RedglobePeach
RedhavenPeach
RedskinPeach
D'AnjouPear
Harrow DelightPear
Blue DamsonPlum
Flavor SupremePlum
French Improved PrunePlum
Green GagePlum
Italian PrunePlum
StanleyPlum
Black TartarianSweet Cherry
RainierSweet Cherry
SunburstSweet Cherry
Show 3 more marginal varieties
How many chill hours does 92373 get?
92373 averages 609 chill hours per winter, ranging from 286 to 977 across the last 10 years.
What hardiness zone is 92373?
92373 is in USDA hardiness zone 9b.

Growing fruit trees in 92373? Get a care calendar anchored to this exact climate, with email reminders.

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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