How many chill hours does 30820 get?

30820 averages 841 chill hours per winter, ranging from 589 to 964 across the last 10 years.

What hardiness zone is 30820?

30820 is in USDA hardiness zone 8b.

Location almanac

The short answer

30820 averages 841 chill hours per winter (589–964 across 10 years) in USDA zone 8b.

30820 climate
Average chill hours	841 (589–964 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically February 27 – March 21
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 30820’s chill hours and zone:

Chill and zone requirements are comfortably met in 30820.

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 30820 get?: 30820 averages 841 chill hours per winter, ranging from 589 to 964 across the last 10 years.
What hardiness zone is 30820?: 30820 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