How many chill hours does 93638 get?

93638 averages 1060 chill hours per winter, ranging from 907 to 1496 across the last 10 years.

What hardiness zone is 93638?

93638 is in USDA hardiness zone 9b.

Location almanac

The short answer

93638 averages 1,060 chill hours per winter (907–1,496 across 10 years) in USDA zone 9b.

93638 climate
Average chill hours	1,060 (907–1,496 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 12 – March 2
First fall frost	typically November 21 – December 19

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 93638’s chill hours and zone:

Chill and zone requirements are comfortably met in 93638.

Show 87 more good fit varieties

How many chill hours does 93638 get?: 93638 averages 1060 chill hours per winter, ranging from 907 to 1496 across the last 10 years.
What hardiness zone is 93638?: 93638 is in USDA hardiness zone 9b.

Growing fruit trees in 93638? 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