How many chill hours does 80442 get?

80442 averages 877 chill hours per winter, ranging from 670 to 1143 across the last 10 years.

What hardiness zone is 80442?

80442 is in USDA hardiness zone 5b.

Location almanac

The short answer

80442 averages 877 chill hours per winter (670–1,143 across 10 years) in USDA zone 5b.

80442 climate
Average chill hours	877 (670–1,143 across 10 winters)
USDA hardiness zone	5b
Last spring frost	typically June 8 – June 27
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 80442’s chill hours and zone:

Chill and zone requirements are comfortably met in 80442.

Show 116 more good fit varieties

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

How many chill hours does 80442 get?: 80442 averages 877 chill hours per winter, ranging from 670 to 1143 across the last 10 years.
What hardiness zone is 80442?: 80442 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