How many chill hours does 98381 get?

98381 averages 2726 chill hours per winter, ranging from 2413 to 2981 across the last 10 years.

What hardiness zone is 98381?

98381 is in USDA hardiness zone 9a.

Location almanac

The short answer

98381 averages 2,726 chill hours per winter (2,413–2,981 across 10 years) in USDA zone 9a.

98381 climate
Average chill hours	2,726 (2,413–2,981 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically March 11 – April 14
First fall frost	typically November 14 – December 7

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 98381’s chill hours and zone:

Chill and zone requirements are comfortably met in 98381.

Show 87 more good fit varieties

How many chill hours does 98381 get?: 98381 averages 2726 chill hours per winter, ranging from 2413 to 2981 across the last 10 years.
What hardiness zone is 98381?: 98381 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