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Chill hours in 95659

The short answer

95659 averages 952 chill hours per winter (7821,424 across 10 years) in USDA zone 9b.
95659 climate
Average chill hours952 (782–1,424 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically January 2 – February 24
First fall frosttypically November 27 – December 20

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 95659’s chill hours and zone:

How many chill hours does 95659 get?
95659 averages 952 chill hours per winter, ranging from 782 to 1424 across the last 10 years.
What hardiness zone is 95659?
95659 is in USDA hardiness zone 9b.

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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