How many chill hours does 58439 get?

58439 averages 1083 chill hours per winter, ranging from 536 to 1330 across the last 10 years.

What hardiness zone is 58439?

58439 is in USDA hardiness zone 4b.

Location almanac

The short answer

58439 averages 1,083 chill hours per winter (536–1,330 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 58439’s chill hours and zone:

Chill and zone requirements are comfortably met in 58439.

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How many chill hours does 58439 get?: 58439 averages 1083 chill hours per winter, ranging from 536 to 1330 across the last 10 years.
What hardiness zone is 58439?: 58439 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