Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in 55751

The short answer

55751 averages 995 chill hours per winter (7381,325 across 10 years) in USDA zone 3b.
55751 climate
Average chill hours995 (738–1,325 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 29 – May 16
First fall frosttypically October 5 – October 23

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 55751’s chill hours and zone:

How many chill hours does 55751 get?
55751 averages 995 chill hours per winter, ranging from 738 to 1325 across the last 10 years.
What hardiness zone is 55751?
55751 is in USDA hardiness zone 3b.

Growing fruit trees in 55751? Get a care calendar anchored to this exact climate, with email reminders.

Start My Orchard

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