How many chill hours does 18955 get?

18955 averages 1694 chill hours per winter, ranging from 1372 to 1999 across the last 10 years.

What hardiness zone is 18955?

18955 is in USDA hardiness zone 6b.

Location almanac

The short answer

18955 averages 1,694 chill hours per winter (1,372–1,999 across 10 years) in USDA zone 6b.

18955 climate
Average chill hours	1,694 (1,372–1,999 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically March 30 – April 22
First fall frost	typically November 1 – November 15

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 18955’s chill hours and zone:

Chill and zone requirements are comfortably met in 18955.

Show 126 more good fit varieties

How many chill hours does 18955 get?: 18955 averages 1694 chill hours per winter, ranging from 1372 to 1999 across the last 10 years.
What hardiness zone is 18955?: 18955 is in USDA hardiness zone 6b.

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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