How many chill hours does 59640 get?

59640 averages 1048 chill hours per winter, ranging from 684 to 1450 across the last 10 years.

What hardiness zone is 59640?

59640 is in USDA hardiness zone 4b.

Location almanac

The short answer

59640 averages 1,048 chill hours per winter (684–1,450 across 10 years) in USDA zone 4b.

59640 climate
Average chill hours	1,048 (684–1,450 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically May 31 – June 19
First fall frost	typically September 7 – September 28

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 59640’s chill hours and zone:

Chill and zone requirements are comfortably met in 59640.

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How many chill hours does 59640 get?: 59640 averages 1048 chill hours per winter, ranging from 684 to 1450 across the last 10 years.
What hardiness zone is 59640?: 59640 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