How many chill hours does 21813 get?

21813 averages 1496 chill hours per winter, ranging from 1052 to 1839 across the last 10 years.

What hardiness zone is 21813?

21813 is in USDA hardiness zone 7b.

Location almanac

The short answer

21813 averages 1,496 chill hours per winter (1,052–1,839 across 10 years) in USDA zone 7b.

21813 climate
Average chill hours	1,496 (1,052–1,839 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 7 – March 29
First fall frost	typically November 13 – 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 21813’s chill hours and zone:

Chill and zone requirements are comfortably met in 21813.

Show 131 more good fit varieties

How many chill hours does 21813 get?: 21813 averages 1496 chill hours per winter, ranging from 1052 to 1839 across the last 10 years.
What hardiness zone is 21813?: 21813 is in USDA hardiness zone 7b.

Growing fruit trees in 21813? 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