Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in 55360

The short answer

55360 averages 1,160 chill hours per winter (9491,422 across 10 years) in USDA zone 4b.
55360 climate
Average chill hours1,160 (949–1,422 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 21 – April 28
First fall frosttypically October 15 – November 19

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 55360’s chill hours and zone:

How many chill hours does 55360 get?
55360 averages 1160 chill hours per winter, ranging from 949 to 1422 across the last 10 years.
What hardiness zone is 55360?
55360 is in USDA hardiness zone 4b.

Growing fruit trees in 55360? 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