How many chill hours does 55918 get?

55918 averages 1187 chill hours per winter, ranging from 1043 to 1442 across the last 10 years.

What hardiness zone is 55918?

55918 is in USDA hardiness zone 4b.

Location almanac

The short answer

55918 averages 1,187 chill hours per winter (1,043–1,442 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 55918’s chill hours and zone:

Chill and zone requirements are comfortably met in 55918.

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How many chill hours does 55918 get?: 55918 averages 1187 chill hours per winter, ranging from 1043 to 1442 across the last 10 years.
What hardiness zone is 55918?: 55918 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