How many chill hours does 30817 get?

30817 averages 847 chill hours per winter, ranging from 612 to 990 across the last 10 years.

What hardiness zone is 30817?

30817 is in USDA hardiness zone 8b.

Location almanac

The short answer

30817 averages 847 chill hours per winter (612–990 across 10 years) in USDA zone 8b.

30817 climate
Average chill hours	847 (612–990 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 22 – March 13
First fall frost	typically November 28 – December 23

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 30817’s chill hours and zone:

Chill and zone requirements are comfortably met in 30817.

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 30817 get?: 30817 averages 847 chill hours per winter, ranging from 612 to 990 across the last 10 years.
What hardiness zone is 30817?: 30817 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