How many chill hours does 31830 get?

31830 averages 871 chill hours per winter, ranging from 594 to 991 across the last 10 years.

What hardiness zone is 31830?

31830 is in USDA hardiness zone 8a.

Location almanac

The short answer

31830 averages 871 chill hours per winter (594–991 across 10 years) in USDA zone 8a.

31830 climate
Average chill hours	871 (594–991 across 10 winters)
USDA hardiness zone	8a
Last spring frost	typically February 20 – March 20
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 31830’s chill hours and zone:

Chill and zone requirements are comfortably met in 31830.

Show 123 more good fit varieties

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

How many chill hours does 31830 get?: 31830 averages 871 chill hours per winter, ranging from 594 to 991 across the last 10 years.
What hardiness zone is 31830?: 31830 is in USDA hardiness zone 8a.

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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