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Chill hours in 89156

The short answer

89156 averages 1,016 chill hours per winter (7101,405 across 10 years) in USDA zone 9b.
89156 climate
Average chill hours1,016 (710–1,405 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically February 5 – March 11
First fall frosttypically November 14 – December 18

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 89156’s chill hours and zone:

How many chill hours does 89156 get?
89156 averages 1016 chill hours per winter, ranging from 710 to 1405 across the last 10 years.
What hardiness zone is 89156?
89156 is in USDA hardiness zone 9b.

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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