How many chill hours does 58021 get?

58021 averages 1058 chill hours per winter, ranging from 665 to 1359 across the last 10 years.

What hardiness zone is 58021?

58021 is in USDA hardiness zone 4a.

Location almanac

The short answer

58021 averages 1,058 chill hours per winter (665–1,359 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 58021’s chill hours and zone:

Chill and zone requirements are comfortably met in 58021.

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How many chill hours does 58021 get?: 58021 averages 1058 chill hours per winter, ranging from 665 to 1359 across the last 10 years.
What hardiness zone is 58021?: 58021 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