How many chill hours does 59226 get?

59226 averages 1156 chill hours per winter, ranging from 639 to 1385 across the last 10 years.

What hardiness zone is 59226?

59226 is in USDA hardiness zone 4a.

Location almanac

The short answer

59226 averages 1,156 chill hours per winter (639–1,385 across 10 years) in USDA zone 4a.

59226 climate
Average chill hours	1,156 (639–1,385 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically April 24 – May 19
First fall frost	typically September 28 – October 15

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 59226’s chill hours and zone:

Chill and zone requirements are comfortably met in 59226.

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How many chill hours does 59226 get?: 59226 averages 1156 chill hours per winter, ranging from 639 to 1385 across the last 10 years.
What hardiness zone is 59226?: 59226 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