How many chill hours does 55307 get?

55307 averages 1124 chill hours per winter, ranging from 831 to 1393 across the last 10 years.

What hardiness zone is 55307?

55307 is in USDA hardiness zone 4b.

Location almanac

The short answer

55307 averages 1,124 chill hours per winter (831–1,393 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 55307’s chill hours and zone:

Chill and zone requirements are comfortably met in 55307.

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How many chill hours does 55307 get?: 55307 averages 1124 chill hours per winter, ranging from 831 to 1393 across the last 10 years.
What hardiness zone is 55307?: 55307 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