How many chill hours does 87420 get?

87420 averages 1737 chill hours per winter, ranging from 1331 to 1880 across the last 10 years.

What hardiness zone is 87420?

87420 is in USDA hardiness zone 7a.

Location almanac

The short answer

87420 averages 1,737 chill hours per winter (1,331–1,880 across 10 years) in USDA zone 7a.

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 87420’s chill hours and zone:

Chill and zone requirements are comfortably met in 87420.

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How many chill hours does 87420 get?: 87420 averages 1737 chill hours per winter, ranging from 1331 to 1880 across the last 10 years.
What hardiness zone is 87420?: 87420 is in USDA hardiness zone 7a.

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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