How many chill hours does 60503 get?

60503 averages 1513 chill hours per winter, ranging from 1211 to 1854 across the last 10 years.

What hardiness zone is 60503?

60503 is in USDA hardiness zone 5b.

Location almanac

The short answer

60503 averages 1,513 chill hours per winter (1,211–1,854 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 60503’s chill hours and zone:

Chill and zone requirements are comfortably met in 60503.

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How many chill hours does 60503 get?: 60503 averages 1513 chill hours per winter, ranging from 1211 to 1854 across the last 10 years.
What hardiness zone is 60503?: 60503 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