How many chill hours does 98004 get?

98004 averages 2315 chill hours per winter, ranging from 2114 to 2598 across the last 10 years.

What hardiness zone is 98004?

98004 is in USDA hardiness zone 9a.

Location almanac

The short answer

98004 averages 2,315 chill hours per winter (2,114–2,598 across 10 years) in USDA zone 9a.

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 98004’s chill hours and zone:

Chill and zone requirements are comfortably met in 98004.

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How many chill hours does 98004 get?: 98004 averages 2315 chill hours per winter, ranging from 2114 to 2598 across the last 10 years.
What hardiness zone is 98004?: 98004 is in USDA hardiness zone 9a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026