How many chill hours does 80643 get?

80643 averages 1365 chill hours per winter, ranging from 1114 to 1535 across the last 10 years.

What hardiness zone is 80643?

80643 is in USDA hardiness zone 5b.

Location almanac

The short answer

80643 averages 1,365 chill hours per winter (1,114–1,535 across 10 years) in USDA zone 5b.

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 80643’s chill hours and zone:

Chill and zone requirements are comfortably met in 80643.

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How many chill hours does 80643 get?: 80643 averages 1365 chill hours per winter, ranging from 1114 to 1535 across the last 10 years.
What hardiness zone is 80643?: 80643 is in USDA hardiness zone 5b.

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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