How many chill hours does 58646 get?

58646 averages 1208 chill hours per winter, ranging from 732 to 1421 across the last 10 years.

What hardiness zone is 58646?

58646 is in USDA hardiness zone 4a.

Location almanac

The short answer

58646 averages 1,208 chill hours per winter (732–1,421 across 10 years) in USDA zone 4a.

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 58646’s chill hours and zone:

Chill and zone requirements are comfortably met in 58646.

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How many chill hours does 58646 get?: 58646 averages 1208 chill hours per winter, ranging from 732 to 1421 across the last 10 years.
What hardiness zone is 58646?: 58646 is in USDA hardiness zone 4a.

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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