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Chill hours in 98032

The short answer

98032 averages 2,323 chill hours per winter (2,0602,554 across 10 years) in USDA zone 9a.
98032 climate
Average chill hours2,323 (2,060–2,554 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically March 13 – April 20
First fall frosttypically October 28 – 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 98032’s chill hours and zone:

How many chill hours does 98032 get?
98032 averages 2323 chill hours per winter, ranging from 2060 to 2554 across the last 10 years.
What hardiness zone is 98032?
98032 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