How many chill hours does 58420 get?

58420 averages 1010 chill hours per winter, ranging from 534 to 1263 across the last 10 years.

What hardiness zone is 58420?

58420 is in USDA hardiness zone 4b.

Location almanac

The short answer

58420 averages 1,010 chill hours per winter (534–1,263 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 58420’s chill hours and zone:

Chill and zone requirements are comfortably met in 58420.

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How many chill hours does 58420 get?: 58420 averages 1010 chill hours per winter, ranging from 534 to 1263 across the last 10 years.
What hardiness zone is 58420?: 58420 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