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Chill hours in 95429

The short answer

95429 averages 2,128 chill hours per winter (1,9922,283 across 10 years) in USDA zone 9a.
95429 climate
Average chill hours2,128 (1,992–2,283 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically March 30 – May 7
First fall frosttypically November 3 – November 18

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 95429’s chill hours and zone:

How many chill hours does 95429 get?
95429 averages 2128 chill hours per winter, ranging from 1992 to 2283 across the last 10 years.
What hardiness zone is 95429?
95429 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