How many chill hours does 80221 get?

80221 averages 1332 chill hours per winter, ranging from 1045 to 1519 across the last 10 years.

What hardiness zone is 80221?

80221 is in USDA hardiness zone 6a.

Location almanac

The short answer

80221 averages 1,332 chill hours per winter (1,045–1,519 across 10 years) in USDA zone 6a.

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 80221’s chill hours and zone:

Chill and zone requirements are comfortably met in 80221.

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How many chill hours does 80221 get?: 80221 averages 1332 chill hours per winter, ranging from 1045 to 1519 across the last 10 years.
What hardiness zone is 80221?: 80221 is in USDA hardiness zone 6a.

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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