How many chill hours does 36420 get?

36420 averages 580 chill hours per winter, ranging from 338 to 674 across the last 10 years.

What hardiness zone is 36420?

36420 is in USDA hardiness zone 8b.

Location almanac

The short answer

36420 averages 580 chill hours per winter (338–674 across 10 years) in USDA zone 8b.

36420 climate
Average chill hours	580 (338–674 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 22 – March 16
First fall frost	typically November 18 – December 10

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 36420’s chill hours and zone:

Chill and zone requirements are comfortably met in 36420.

Show 71 more good fit varieties

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

How many chill hours does 36420 get?: 36420 averages 580 chill hours per winter, ranging from 338 to 674 across the last 10 years.
What hardiness zone is 36420?: 36420 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