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Chill hours in 98569

The short answer

98569 averages 1,855 chill hours per winter (1,6272,334 across 10 years) in USDA zone 9a.
98569 climate
Average chill hours1,855 (1,627–2,334 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 3 – March 11
First fall frosttypically November 30 – December 26

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 98569’s chill hours and zone:

How many chill hours does 98569 get?
98569 averages 1855 chill hours per winter, ranging from 1627 to 2334 across the last 10 years.
What hardiness zone is 98569?
98569 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