How many chill hours does 55018 get?

55018 averages 1217 chill hours per winter, ranging from 1029 to 1501 across the last 10 years.

What hardiness zone is 55018?

55018 is in USDA hardiness zone 4b.

Location almanac

The short answer

55018 averages 1,217 chill hours per winter (1,029–1,501 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 55018’s chill hours and zone:

Chill and zone requirements are comfortably met in 55018.

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How many chill hours does 55018 get?: 55018 averages 1217 chill hours per winter, ranging from 1029 to 1501 across the last 10 years.
What hardiness zone is 55018?: 55018 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