How many chill hours does 21701 get?

21701 averages 1647 chill hours per winter, ranging from 1401 to 1871 across the last 10 years.

What hardiness zone is 21701?

21701 is in USDA hardiness zone 7a.

Location almanac

The short answer

21701 averages 1,647 chill hours per winter (1,401–1,871 across 10 years) in USDA zone 7a.

21701 climate
Average chill hours	1,647 (1,401–1,871 across 10 winters)
USDA hardiness zone	7a
Last spring frost	typically March 27 – April 28
First fall frost	typically November 2 – November 22

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 21701’s chill hours and zone:

Chill and zone requirements are comfortably met in 21701.

Show 108 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 21701 get?: 21701 averages 1647 chill hours per winter, ranging from 1401 to 1871 across the last 10 years.
What hardiness zone is 21701?: 21701 is in USDA hardiness zone 7a.

Growing fruit trees in 21701? Save your first tree free and see this month’s care tasks for this climate.

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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