How many chill hours does 37821 get?

37821 averages 1380 chill hours per winter, ranging from 1159 to 1689 across the last 10 years.

What hardiness zone is 37821?

37821 is in USDA hardiness zone 7b.

Location almanac

The short answer

37821 averages 1,380 chill hours per winter (1,159–1,689 across 10 years) in USDA zone 7b.

37821 climate
Average chill hours	1,380 (1,159–1,689 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 17 – April 10
First fall frost	typically November 9 – November 25

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 37821’s chill hours and zone:

Chill and zone requirements are comfortably met in 37821.

Show 131 more good fit varieties

How many chill hours does 37821 get?: 37821 averages 1380 chill hours per winter, ranging from 1159 to 1689 across the last 10 years.
What hardiness zone is 37821?: 37821 is in USDA hardiness zone 7b.

Growing fruit trees in 37821? 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