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Chill hours in 95616

The short answer

95616 averages 934 chill hours per winter (7631,399 across 10 years) in USDA zone 9b.
95616 climate
Average chill hours934 (763–1,399 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically January 3 – March 5
First fall frosttypically November 15 – December 19

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 95616’s chill hours and zone:

How many chill hours does 95616 get?
95616 averages 934 chill hours per winter, ranging from 763 to 1399 across the last 10 years.
What hardiness zone is 95616?
95616 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