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Chill hours in 58079

The short answer

58079 averages 1,043 chill hours per winter (6011,352 across 10 years) in USDA zone 4a.
58079 climate
Average chill hours1,043 (601–1,352 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 23 – May 11
First fall frosttypically October 7 – October 27

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 58079’s chill hours and zone:

How many chill hours does 58079 get?
58079 averages 1043 chill hours per winter, ranging from 601 to 1352 across the last 10 years.
What hardiness zone is 58079?
58079 is in USDA hardiness zone 4a.

Growing fruit trees in 58079? 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