How many chill hours does 61103 get?

61103 averages 1456 chill hours per winter, ranging from 1181 to 1761 across the last 10 years.

What hardiness zone is 61103?

61103 is in USDA hardiness zone 5b.

Location almanac

The short answer

61103 averages 1,456 chill hours per winter (1,181–1,761 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 61103’s chill hours and zone:

Chill and zone requirements are comfortably met in 61103.

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How many chill hours does 61103 get?: 61103 averages 1456 chill hours per winter, ranging from 1181 to 1761 across the last 10 years.
What hardiness zone is 61103?: 61103 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