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Chill hours in 95619

The short answer

95619 averages 1,506 chill hours per winter (1,2771,931 across 10 years) in USDA zone 9b.
95619 climate
Average chill hours1,506 (1,277–1,931 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically February 3 – May 7
First fall frosttypically November 10 – December 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 95619’s chill hours and zone:

How many chill hours does 95619 get?
95619 averages 1506 chill hours per winter, ranging from 1277 to 1931 across the last 10 years.
What hardiness zone is 95619?
95619 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