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Chill hours in 95559

The short answer

95559 averages 1,570 chill hours per winter (1,3491,949 across 10 years) in USDA zone 9a.
95559 climate
Average chill hours1,570 (1,349–1,949 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 31 – April 17
First fall frosttypically November 8 – November 28

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 95559’s chill hours and zone:

How many chill hours does 95559 get?
95559 averages 1570 chill hours per winter, ranging from 1349 to 1949 across the last 10 years.
What hardiness zone is 95559?
95559 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