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Chill hours in 93669

The short answer

93669 averages 1,922 chill hours per winter (1,7872,065 across 10 years) in USDA zone 9a.
93669 climate
Average chill hours1,922 (1,787–2,065 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically April 26 – May 22
First fall frosttypically October 13 – November 9

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 93669’s chill hours and zone:

How many chill hours does 93669 get?
93669 averages 1922 chill hours per winter, ranging from 1787 to 2065 across the last 10 years.
What hardiness zone is 93669?
93669 is in USDA hardiness zone 9a.

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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