How many chill hours does 31520 get?

31520 averages 323 chill hours per winter, ranging from 151 to 508 across the last 10 years.

What hardiness zone is 31520?

31520 is in USDA hardiness zone 9a.

Location almanac

The short answer

31520 averages 323 chill hours per winter (151–508 across 10 years) in USDA zone 9a.

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 31520’s chill hours and zone:

Chill and zone requirements are comfortably met in 31520.

Show 25 more good fit varieties

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

How many chill hours does 31520 get?: 31520 averages 323 chill hours per winter, ranging from 151 to 508 across the last 10 years.
What hardiness zone is 31520?: 31520 is in USDA hardiness zone 9a.

Growing fruit trees in 31520? 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