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Chill hours in 58748

The short answer

58748 averages 986 chill hours per winter (5851,222 across 10 years) in USDA zone 3b.
58748 climate
Average chill hours986 (585–1,222 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 28 – May 19
First fall frosttypically October 7 – October 25

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 58748’s chill hours and zone:

How many chill hours does 58748 get?
58748 averages 986 chill hours per winter, ranging from 585 to 1222 across the last 10 years.
What hardiness zone is 58748?
58748 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