How many chill hours does 20771 get?

20771 averages 1559 chill hours per winter, ranging from 1252 to 1808 across the last 10 years.

What hardiness zone is 20771?

20771 is in USDA hardiness zone 7b.

Location almanac

The short answer

20771 averages 1,559 chill hours per winter (1,252–1,808 across 10 years) in USDA zone 7b.

20771 climate
Average chill hours	1,559 (1,252–1,808 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 25 – April 11
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 20771’s chill hours and zone:

Chill and zone requirements are comfortably met in 20771.

Show 131 more good fit varieties

How many chill hours does 20771 get?: 20771 averages 1559 chill hours per winter, ranging from 1252 to 1808 across the last 10 years.
What hardiness zone is 20771?: 20771 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