How many chill hours does 55909 get?

55909 averages 1214 chill hours per winter, ranging from 1084 to 1438 across the last 10 years.

What hardiness zone is 55909?

55909 is in USDA hardiness zone 4b.

Location almanac

The short answer

55909 averages 1,214 chill hours per winter (1,084–1,438 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 55909’s chill hours and zone:

Chill and zone requirements are comfortably met in 55909.

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How many chill hours does 55909 get?: 55909 averages 1214 chill hours per winter, ranging from 1084 to 1438 across the last 10 years.
What hardiness zone is 55909?: 55909 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