How many chill hours does 39859 get?

39859 averages 521 chill hours per winter, ranging from 282 to 643 across the last 10 years.

What hardiness zone is 39859?

39859 is in USDA hardiness zone 9a.

Location almanac

The short answer

39859 averages 521 chill hours per winter (282–643 across 10 years) in USDA zone 9a.

39859 climate
Average chill hours	521 (282–643 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 16 – March 6
First fall frost	typically November 28 – 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 39859’s chill hours and zone:

Chill and zone requirements are comfortably met in 39859.

Show 48 more good fit varieties

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

How many chill hours does 39859 get?: 39859 averages 521 chill hours per winter, ranging from 282 to 643 across the last 10 years.
What hardiness zone is 39859?: 39859 is in USDA hardiness zone 9a.

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[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