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Chill hours in 97112

The short answer

97112 averages 2,691 chill hours per winter (2,3032,985 across 10 years) in USDA zone 9a.
97112 climate
Average chill hours2,691 (2,303–2,985 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 31 – April 23
First fall frosttypically October 23 – December 5

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 97112’s chill hours and zone:

How many chill hours does 97112 get?
97112 averages 2691 chill hours per winter, ranging from 2303 to 2985 across the last 10 years.
What hardiness zone is 97112?
97112 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