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Chill hours in 97060

The short answer

97060 averages 2,200 chill hours per winter (1,8752,588 across 10 years) in USDA zone 9a.
97060 climate
Average chill hours2,200 (1,875–2,588 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically March 5 – April 12
First fall frosttypically October 28 – December 7

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 97060’s chill hours and zone:

How many chill hours does 97060 get?
97060 averages 2200 chill hours per winter, ranging from 1875 to 2588 across the last 10 years.
What hardiness zone is 97060?
97060 is in USDA hardiness zone 9a.

Growing fruit trees in 97060? 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