How many chill hours does 97420 get?

97420 averages 1683 chill hours per winter, ranging from 1248 to 2223 across the last 10 years.

What hardiness zone is 97420?

97420 is in USDA hardiness zone 9a.

Location almanac

The short answer

97420 averages 1,683 chill hours per winter (1,248–2,223 across 10 years) in USDA zone 9a.

97420 climate
Average chill hours	1,683 (1,248–2,223 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically March 5 – April 13
First fall frost	typically November 10 – December 14

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 97420’s chill hours and zone:

Chill and zone requirements are comfortably met in 97420.

Show 87 more good fit varieties

How many chill hours does 97420 get?: 97420 averages 1683 chill hours per winter, ranging from 1248 to 2223 across the last 10 years.
What hardiness zone is 97420?: 97420 is in USDA hardiness zone 9a.

Growing fruit trees in 97420? 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