How many chill hours does 98251 get?

98251 averages 1533 chill hours per winter, ranging from 981 to 1810 across the last 10 years.

What hardiness zone is 98251?

98251 is in USDA hardiness zone 8a.

Location almanac

The short answer

98251 averages 1,533 chill hours per winter (981–1,810 across 10 years) in USDA zone 8a.

98251 climate
Average chill hours	1,533 (981–1,810 across 10 winters)
USDA hardiness zone	8a
Last spring frost	typically May 8 – June 12
First fall frost	typically September 27 – October 23

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 98251’s chill hours and zone:

Chill and zone requirements are comfortably met in 98251.

Show 129 more good fit varieties

How many chill hours does 98251 get?: 98251 averages 1533 chill hours per winter, ranging from 981 to 1810 across the last 10 years.
What hardiness zone is 98251?: 98251 is in USDA hardiness zone 8a.

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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