How many chill hours does 80438 get?

80438 averages 520 chill hours per winter, ranging from 446 to 666 across the last 10 years.

What hardiness zone is 80438?

80438 is in USDA hardiness zone 5a.

Location almanac

The short answer

80438 averages 520 chill hours per winter (446–666 across 10 years) in USDA zone 5a.

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 80438’s chill hours and zone:

Chill and zone requirements are comfortably met in 80438.

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Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 80438 get?: 80438 averages 520 chill hours per winter, ranging from 446 to 666 across the last 10 years.
What hardiness zone is 80438?: 80438 is in USDA hardiness zone 5a.

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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