How many chill hours does 81623 get?

81623 averages 839 chill hours per winter, ranging from 587 to 997 across the last 10 years.

What hardiness zone is 81623?

81623 is in USDA hardiness zone 6a.

Location almanac

The short answer

81623 averages 839 chill hours per winter (587–997 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 81623’s chill hours and zone:

Chill and zone requirements are comfortably met in 81623.

Show 120 more good fit varieties

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

How many chill hours does 81623 get?: 81623 averages 839 chill hours per winter, ranging from 587 to 997 across the last 10 years.
What hardiness zone is 81623?: 81623 is in USDA hardiness zone 6a.

Growing fruit trees in 81623? Get a care calendar anchored to this exact climate, with email reminders.

[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