How many chill hours does 05821 get?

05821 averages 1326 chill hours per winter, ranging from 1040 to 1848 across the last 10 years.

What hardiness zone is 05821?

05821 is in USDA hardiness zone 4b.

Location almanac

The short answer

05821 averages 1,326 chill hours per winter (1,040–1,848 across 10 years) in USDA zone 4b.

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 05821’s chill hours and zone:

Chill and zone requirements are comfortably met in 05821.

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How many chill hours does 05821 get?: 05821 averages 1326 chill hours per winter, ranging from 1040 to 1848 across the last 10 years.
What hardiness zone is 05821?: 05821 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