How many chill hours does 37306 get?

37306 averages 1121 chill hours per winter, ranging from 939 to 1378 across the last 10 years.

What hardiness zone is 37306?

37306 is in USDA hardiness zone 7b.

Location almanac

The short answer

37306 averages 1,121 chill hours per winter (939–1,378 across 10 years) in USDA zone 7b.

37306 climate
Average chill hours	1,121 (939–1,378 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 8 – April 3
First fall frost	typically November 1 – December 1

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 37306’s chill hours and zone:

Chill and zone requirements are comfortably met in 37306.

Show 131 more good fit varieties

How many chill hours does 37306 get?: 37306 averages 1121 chill hours per winter, ranging from 939 to 1378 across the last 10 years.
What hardiness zone is 37306?: 37306 is in USDA hardiness zone 7b.

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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