How many chill hours does 95638 get?

95638 averages 1134 chill hours per winter, ranging from 928 to 1498 across the last 10 years.

What hardiness zone is 95638?

95638 is in USDA hardiness zone 9b.

Location almanac

The short answer

95638 averages 1,134 chill hours per winter (928–1,498 across 10 years) in USDA zone 9b.

95638 climate
Average chill hours	1,134 (928–1,498 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 26 – March 6
First fall frost	typically November 20 – December 27

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 95638’s chill hours and zone:

Chill and zone requirements are comfortably met in 95638.

Show 87 more good fit varieties

How many chill hours does 95638 get?: 95638 averages 1134 chill hours per winter, ranging from 928 to 1498 across the last 10 years.
What hardiness zone is 95638?: 95638 is in USDA hardiness zone 9b.

Growing fruit trees in 95638? 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