How many chill hours does 55317 get?

55317 averages 1217 chill hours per winter, ranging from 1043 to 1470 across the last 10 years.

What hardiness zone is 55317?

55317 is in USDA hardiness zone 5a.

Location almanac

The short answer

55317 averages 1,217 chill hours per winter (1,043–1,470 across 10 years) in USDA zone 5a.

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 55317’s chill hours and zone:

Chill and zone requirements are comfortably met in 55317.

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How many chill hours does 55317 get?: 55317 averages 1217 chill hours per winter, ranging from 1043 to 1470 across the last 10 years.
What hardiness zone is 55317?: 55317 is in USDA hardiness zone 5a.

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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