How many chill hours does 83638 get?

83638 averages 776 chill hours per winter, ranging from 560 to 1011 across the last 10 years.

What hardiness zone is 83638?

83638 is in USDA hardiness zone 5a.

Location almanac

The short answer

83638 averages 776 chill hours per winter (560–1,011 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 83638’s chill hours and zone:

Chill and zone requirements are comfortably met in 83638.

Show 94 more good fit varieties

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

How many chill hours does 83638 get?: 83638 averages 776 chill hours per winter, ranging from 560 to 1011 across the last 10 years.
What hardiness zone is 83638?: 83638 is in USDA hardiness zone 5a.

Growing fruit trees in 83638? 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