How many chill hours does 55945 get?

55945 averages 1289 chill hours per winter, ranging from 1111 to 1567 across the last 10 years.

What hardiness zone is 55945?

55945 is in USDA hardiness zone 4b.

Location almanac

The short answer

55945 averages 1,289 chill hours per winter (1,111–1,567 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 55945’s chill hours and zone:

Chill and zone requirements are comfortably met in 55945.

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How many chill hours does 55945 get?: 55945 averages 1289 chill hours per winter, ranging from 1111 to 1567 across the last 10 years.
What hardiness zone is 55945?: 55945 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