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Chill hours in 55796

The short answer

55796 averages 988 chill hours per winter (6891,352 across 10 years) in USDA zone 3b.
55796 climate
Average chill hours988 (689–1,352 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically May 3 – May 16
First fall frosttypically October 17 – November 2

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 55796’s chill hours and zone:

How many chill hours does 55796 get?
55796 averages 988 chill hours per winter, ranging from 689 to 1352 across the last 10 years.
What hardiness zone is 55796?
55796 is in USDA hardiness zone 3b.

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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