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Chill hours in 04928

The short answer

04928 averages 1,314 chill hours per winter (1,1361,699 across 10 years) in USDA zone 4b.
04928 climate
Average chill hours1,314 (1,136–1,699 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 1
First fall frosttypically October 19 – November 8

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 04928’s chill hours and zone:

How many chill hours does 04928 get?
04928 averages 1314 chill hours per winter, ranging from 1136 to 1699 across the last 10 years.
What hardiness zone is 04928?
04928 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