How many chill hours does 39401 get?

39401 averages 634 chill hours per winter, ranging from 373 to 799 across the last 10 years.

What hardiness zone is 39401?

39401 is in USDA hardiness zone 8b.

Location almanac

The short answer

39401 averages 634 chill hours per winter (373–799 across 10 years) in USDA zone 8b.

39401 climate
Average chill hours	634 (373–799 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 30 – March 13
First fall frost	typically November 15 – December 7

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 39401’s chill hours and zone:

Chill and zone requirements are comfortably met in 39401.

Show 78 more good fit varieties

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

How many chill hours does 39401 get?: 39401 averages 634 chill hours per winter, ranging from 373 to 799 across the last 10 years.
What hardiness zone is 39401?: 39401 is in USDA hardiness zone 8b.

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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