How many chill hours does 99647 get?

99647 averages 1169 chill hours per winter, ranging from 796 to 1533 across the last 10 years.

What hardiness zone is 99647?

99647 is in USDA hardiness zone 4b.

Location almanac

The short answer

99647 averages 1,169 chill hours per winter (796–1,533 across 10 years) in USDA zone 4b.

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 99647’s chill hours and zone:

Chill and zone requirements are comfortably met in 99647.

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How many chill hours does 99647 get?: 99647 averages 1169 chill hours per winter, ranging from 796 to 1533 across the last 10 years.
What hardiness zone is 99647?: 99647 is in USDA hardiness zone 4b.

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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