How many chill hours does 18843 get?

18843 averages 1543 chill hours per winter, ranging from 1290 to 1855 across the last 10 years.

What hardiness zone is 18843?

18843 is in USDA hardiness zone 5b.

Location almanac

The short answer

18843 averages 1,543 chill hours per winter (1,290–1,855 across 10 years) in USDA zone 5b.

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 18843’s chill hours and zone:

Chill and zone requirements are comfortably met in 18843.

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How many chill hours does 18843 get?: 18843 averages 1543 chill hours per winter, ranging from 1290 to 1855 across the last 10 years.
What hardiness zone is 18843?: 18843 is in USDA hardiness zone 5b.

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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