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Chill hours in 58852

The short answer

58852 averages 1,052 chill hours per winter (5991,317 across 10 years) in USDA zone 3b.
58852 climate
Average chill hours1,052 (599–1,317 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 28 – May 19
First fall frosttypically September 28 – October 15

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 58852’s chill hours and zone:

How many chill hours does 58852 get?
58852 averages 1052 chill hours per winter, ranging from 599 to 1317 across the last 10 years.
What hardiness zone is 58852?
58852 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