How many chill hours does 05840 get?

05840 averages 1189 chill hours per winter, ranging from 932 to 1585 across the last 10 years.

What hardiness zone is 05840?

05840 is in USDA hardiness zone 4b.

Location almanac

The short answer

05840 averages 1,189 chill hours per winter (932–1,585 across 10 years) in USDA zone 4b.

05840 climate
Average chill hours	1,189 (932–1,585 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically May 7 – May 18
First fall frost	typically September 27 – 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 05840’s chill hours and zone:

Chill and zone requirements are comfortably met in 05840.

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How many chill hours does 05840 get?: 05840 averages 1189 chill hours per winter, ranging from 932 to 1585 across the last 10 years.
What hardiness zone is 05840?: 05840 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