How many chill hours does 55790 get?

55790 averages 978 chill hours per winter, ranging from 689 to 1299 across the last 10 years.

What hardiness zone is 55790?

55790 is in USDA hardiness zone 3a.

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The short answer

55790 averages 978 chill hours per winter (689–1,299 across 10 years) in USDA zone 3a.

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 55790’s chill hours and zone:

Chill and zone requirements are comfortably met in 55790.

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How many chill hours does 55790 get?: 55790 averages 978 chill hours per winter, ranging from 689 to 1299 across the last 10 years.
What hardiness zone is 55790?: 55790 is in USDA hardiness zone 3a.

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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