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Chill hours in 58266

The short answer

58266 averages 924 chill hours per winter (5261,212 across 10 years) in USDA zone 4a.
58266 climate
Average chill hours924 (526–1,212 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically May 1 – May 19
First fall frosttypically October 7 – October 16

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 58266’s chill hours and zone:

Marginal (1)

Possible in a good year or a favorable microclimate — click through for the caveats.

Marginal varieties for this location
VarietyFruit
ReliancePeach
How many chill hours does 58266 get?
58266 averages 924 chill hours per winter, ranging from 526 to 1212 across the last 10 years.
What hardiness zone is 58266?
58266 is in USDA hardiness zone 4a.

Growing fruit trees in 58266? 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