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Chill hours in 71405

The short answer

71405 averages 621 chill hours per winter (324739 across 10 years) in USDA zone 9a.
71405 climate
Average chill hours621 (324–739 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 19 – March 7
First fall frosttypically November 15 – December 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 71405’s chill hours and zone:

Marginal (12)

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

Marginal varieties for this location
VarietyFruit
GravensteinApple
HarcotApricot
Wenatchee MoorparkApricot
FlavortopNectarine
IndependenceNectarine
FrostPeach
Flavor SupremePlum
Green GagePlum
Black TartarianSweet Cherry
RainierSweet Cherry
VanSweet Cherry
Early RichmondTart Cherry
How many chill hours does 71405 get?
71405 averages 621 chill hours per winter, ranging from 324 to 739 across the last 10 years.
What hardiness zone is 71405?
71405 is in USDA hardiness zone 9a.

Growing fruit trees in 71405? 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