How many chill hours does 59645 get?

59645 averages 1238 chill hours per winter, ranging from 836 to 1568 across the last 10 years.

What hardiness zone is 59645?

59645 is in USDA hardiness zone 4b.

Location almanac

The short answer

59645 averages 1,238 chill hours per winter (836–1,568 across 10 years) in USDA zone 4b.

59645 climate
Average chill hours	1,238 (836–1,568 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically May 17 – June 12
First fall frost	typically September 14 – October 6

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 59645’s chill hours and zone:

Chill and zone requirements are comfortably met in 59645.

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How many chill hours does 59645 get?: 59645 averages 1238 chill hours per winter, ranging from 836 to 1568 across the last 10 years.
What hardiness zone is 59645?: 59645 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