How many chill hours does 57646 get?

57646 averages 1143 chill hours per winter, ranging from 606 to 1446 across the last 10 years.

What hardiness zone is 57646?

57646 is in USDA hardiness zone 4b.

Location almanac

The short answer

57646 averages 1,143 chill hours per winter (606–1,446 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 57646’s chill hours and zone:

Chill and zone requirements are comfortably met in 57646.

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How many chill hours does 57646 get?: 57646 averages 1143 chill hours per winter, ranging from 606 to 1446 across the last 10 years.
What hardiness zone is 57646?: 57646 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