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Chill hours in 58059

The short answer

58059 averages 1,045 chill hours per winter (6611,340 across 10 years) in USDA zone 4a.
58059 climate
Average chill hours1,045 (661–1,340 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 23 – May 11
First fall frosttypically October 5 – October 21

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 58059’s chill hours and zone:

How many chill hours does 58059 get?
58059 averages 1045 chill hours per winter, ranging from 661 to 1340 across the last 10 years.
What hardiness zone is 58059?
58059 is in USDA hardiness zone 4a.

Growing fruit trees in 58059? Get a care calendar anchored to this exact climate, with email reminders.

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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