How many chill hours does 55310 get?

55310 averages 1100 chill hours per winter, ranging from 755 to 1322 across the last 10 years.

What hardiness zone is 55310?

55310 is in USDA hardiness zone 4b.

Location almanac

The short answer

55310 averages 1,100 chill hours per winter (755–1,322 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 55310’s chill hours and zone:

Chill and zone requirements are comfortably met in 55310.

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How many chill hours does 55310 get?: 55310 averages 1100 chill hours per winter, ranging from 755 to 1322 across the last 10 years.
What hardiness zone is 55310?: 55310 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