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Chill hours in 50628

The short answer

50628 averages 1,254 chill hours per winter (1,1071,467 across 10 years) in USDA zone 4b.
50628 climate
Average chill hours1,254 (1,107–1,467 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 13
First fall frosttypically October 12 – October 27

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 50628’s chill hours and zone:

How many chill hours does 50628 get?
50628 averages 1254 chill hours per winter, ranging from 1107 to 1467 across the last 10 years.
What hardiness zone is 50628?
50628 is in USDA hardiness zone 4b.

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Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026