How many chill hours does 59521 get?

59521 averages 1511 chill hours per winter, ranging from 935 to 1723 across the last 10 years.

What hardiness zone is 59521?

59521 is in USDA hardiness zone 4a.

Location almanac

The short answer

59521 averages 1,511 chill hours per winter (935–1,723 across 10 years) in USDA zone 4a.

59521 climate
Average chill hours	1,511 (935–1,723 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically April 16 – May 21
First fall frost	typically September 29 – October 23

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 59521’s chill hours and zone:

Chill and zone requirements are comfortably met in 59521.

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How many chill hours does 59521 get?: 59521 averages 1511 chill hours per winter, ranging from 935 to 1723 across the last 10 years.
What hardiness zone is 59521?: 59521 is in USDA hardiness zone 4a.

Growing fruit trees in 59521? Get a care calendar anchored to this exact climate, with email reminders.

[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