How many chill hours does 80473 get?

80473 averages 1025 chill hours per winter, ranging from 770 to 1298 across the last 10 years.

What hardiness zone is 80473?

80473 is in USDA hardiness zone 4b.

Location almanac

The short answer

80473 averages 1,025 chill hours per winter (770–1,298 across 10 years) in USDA zone 4b.

80473 climate
Average chill hours	1,025 (770–1,298 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically May 30 – June 21
First fall frost	typically September 11 – September 21

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 80473’s chill hours and zone:

Chill and zone requirements are comfortably met in 80473.

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How many chill hours does 80473 get?: 80473 averages 1025 chill hours per winter, ranging from 770 to 1298 across the last 10 years.
What hardiness zone is 80473?: 80473 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