How many chill hours does 21045 get?

21045 averages 1627 chill hours per winter, ranging from 1329 to 1865 across the last 10 years.

What hardiness zone is 21045?

21045 is in USDA hardiness zone 7b.

Location almanac

The short answer

21045 averages 1,627 chill hours per winter (1,329–1,865 across 10 years) in USDA zone 7b.

21045 climate
Average chill hours	1,627 (1,329–1,865 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 26 – April 18
First fall frost	typically November 11 – November 24

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 21045’s chill hours and zone:

Chill and zone requirements are comfortably met in 21045.

Show 131 more good fit varieties

How many chill hours does 21045 get?: 21045 averages 1627 chill hours per winter, ranging from 1329 to 1865 across the last 10 years.
What hardiness zone is 21045?: 21045 is in USDA hardiness zone 7b.

Growing fruit trees in 21045? 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