How many chill hours does 80434 get?

80434 averages 1011 chill hours per winter, ranging from 714 to 1303 across the last 10 years.

What hardiness zone is 80434?

80434 is in USDA hardiness zone 4b.

Location almanac

The short answer

80434 averages 1,011 chill hours per winter (714–1,303 across 10 years) in USDA zone 4b.

80434 climate
Average chill hours	1,011 (714–1,303 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically May 25 – June 10
First fall frost	typically September 11 – October 6

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 80434’s chill hours and zone:

Chill and zone requirements are comfortably met in 80434.

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How many chill hours does 80434 get?: 80434 averages 1011 chill hours per winter, ranging from 714 to 1303 across the last 10 years.
What hardiness zone is 80434?: 80434 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