How many chill hours does 31807 get?

31807 averages 796 chill hours per winter, ranging from 565 to 884 across the last 10 years.

What hardiness zone is 31807?

31807 is in USDA hardiness zone 8b.

Location almanac

The short answer

31807 averages 796 chill hours per winter (565–884 across 10 years) in USDA zone 8b.

31807 climate
Average chill hours	796 (565–884 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically February 14 – March 16
First fall frost	typically November 16 – 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 31807’s chill hours and zone:

Chill and zone requirements are comfortably met in 31807.

Show 103 more good fit varieties

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

How many chill hours does 31807 get?: 31807 averages 796 chill hours per winter, ranging from 565 to 884 across the last 10 years.
What hardiness zone is 31807?: 31807 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