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Chill hours in 58363

The short answer

58363 averages 909 chill hours per winter (5541,207 across 10 years) in USDA zone 3b.
58363 climate
Average chill hours909 (554–1,207 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically May 1 – May 27
First fall frosttypically October 7 – October 20

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 58363’s chill hours and zone:

How many chill hours does 58363 get?
58363 averages 909 chill hours per winter, ranging from 554 to 1207 across the last 10 years.
What hardiness zone is 58363?
58363 is in USDA hardiness zone 3b.

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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