How many chill hours does 53103 get?

53103 averages 1484 chill hours per winter, ranging from 1217 to 1835 across the last 10 years.

What hardiness zone is 53103?

53103 is in USDA hardiness zone 5b.

Location almanac

The short answer

53103 averages 1,484 chill hours per winter (1,217–1,835 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 53103’s chill hours and zone:

Chill and zone requirements are comfortably met in 53103.

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How many chill hours does 53103 get?: 53103 averages 1484 chill hours per winter, ranging from 1217 to 1835 across the last 10 years.
What hardiness zone is 53103?: 53103 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