How many chill hours does 97903 get?

97903 averages 1703 chill hours per winter, ranging from 1215 to 2194 across the last 10 years.

What hardiness zone is 97903?

97903 is in USDA hardiness zone 6b.

Location almanac

The short answer

97903 averages 1,703 chill hours per winter (1,215–2,194 across 10 years) in USDA zone 6b.

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 97903’s chill hours and zone:

Chill and zone requirements are comfortably met in 97903.

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How many chill hours does 97903 get?: 97903 averages 1703 chill hours per winter, ranging from 1215 to 2194 across the last 10 years.
What hardiness zone is 97903?: 97903 is in USDA hardiness zone 6b.

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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