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Chill hours in 95722

The short answer

95722 averages 1,598 chill hours per winter (1,3332,085 across 10 years) in USDA zone 9a.
95722 climate
Average chill hours1,598 (1,333–2,085 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically February 3 – April 19
First fall frosttypically November 3 – December 10

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 95722’s chill hours and zone:

How many chill hours does 95722 get?
95722 averages 1598 chill hours per winter, ranging from 1333 to 2085 across the last 10 years.
What hardiness zone is 95722?
95722 is in USDA hardiness zone 9a.

Growing fruit trees in 95722? Get a care calendar anchored to this exact climate, with email reminders.

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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