How many chill hours does 57720 get?

57720 averages 1389 chill hours per winter, ranging from 1051 to 1609 across the last 10 years.

What hardiness zone is 57720?

57720 is in USDA hardiness zone 4b.

Location almanac

The short answer

57720 averages 1,389 chill hours per winter (1,051–1,609 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 57720’s chill hours and zone:

Chill and zone requirements are comfortably met in 57720.

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How many chill hours does 57720 get?: 57720 averages 1389 chill hours per winter, ranging from 1051 to 1609 across the last 10 years.
What hardiness zone is 57720?: 57720 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