How many chill hours does 98304 get?

98304 averages 793 chill hours per winter, ranging from 469 to 1033 across the last 10 years.

What hardiness zone is 98304?

98304 is in USDA hardiness zone 7a.

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The short answer

98304 averages 793 chill hours per winter (469–1,033 across 10 years) in USDA zone 7a.

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 98304’s chill hours and zone:

Chill and zone requirements are comfortably met in 98304.

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Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 98304 get?: 98304 averages 793 chill hours per winter, ranging from 469 to 1033 across the last 10 years.
What hardiness zone is 98304?: 98304 is in USDA hardiness zone 7a.

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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