Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in 59039

The short answer

59039 averages 1,461 chill hours per winter (1,0951,698 across 10 years) in USDA zone 4b.
59039 climate
Average chill hours1,461 (1,095–1,698 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 15
First fall frosttypically October 4 – October 26

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 59039’s chill hours and zone:

How many chill hours does 59039 get?
59039 averages 1461 chill hours per winter, ranging from 1095 to 1698 across the last 10 years.
What hardiness zone is 59039?
59039 is in USDA hardiness zone 4b.

Growing fruit trees in 59039? 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