How many chill hours does 98503 get?

98503 averages 2300 chill hours per winter, ranging from 2102 to 2557 across the last 10 years.

What hardiness zone is 98503?

98503 is in USDA hardiness zone 8b.

Location almanac

The short answer

98503 averages 2,300 chill hours per winter (2,102–2,557 across 10 years) in USDA zone 8b.

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 98503’s chill hours and zone:

Chill and zone requirements are comfortably met in 98503.

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How many chill hours does 98503 get?: 98503 averages 2300 chill hours per winter, ranging from 2102 to 2557 across the last 10 years.
What hardiness zone is 98503?: 98503 is in USDA hardiness zone 8b.

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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