How many chill hours does 85920 get?

85920 averages 1732 chill hours per winter, ranging from 1376 to 2008 across the last 10 years.

What hardiness zone is 85920?

85920 is in USDA hardiness zone 6b.

Location almanac

The short answer

85920 averages 1,732 chill hours per winter (1,376–2,008 across 10 years) in USDA zone 6b.

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 85920’s chill hours and zone:

Chill and zone requirements are comfortably met in 85920.

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How many chill hours does 85920 get?: 85920 averages 1732 chill hours per winter, ranging from 1376 to 2008 across the last 10 years.
What hardiness zone is 85920?: 85920 is in USDA hardiness zone 6b.

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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