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Chill hours in 58033

The short answer

58033 averages 1,046 chill hours per winter (5631,291 across 10 years) in USDA zone 4a.
58033 climate
Average chill hours1,046 (563–1,291 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 27 – May 19
First fall frosttypically October 7 – November 7

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 58033’s chill hours and zone:

How many chill hours does 58033 get?
58033 averages 1046 chill hours per winter, ranging from 563 to 1291 across the last 10 years.
What hardiness zone is 58033?
58033 is in USDA hardiness zone 4a.

Growing fruit trees in 58033? 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