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Chill hours in 49902

The short answer

49902 averages 1,110 chill hours per winter (7801,487 across 10 years) in USDA zone 4b.
49902 climate
Average chill hours1,110 (780–1,487 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically May 3 – May 14
First fall frosttypically October 12 – November 1

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 49902’s chill hours and zone:

How many chill hours does 49902 get?
49902 averages 1110 chill hours per winter, ranging from 780 to 1487 across the last 10 years.
What hardiness zone is 49902?
49902 is in USDA hardiness zone 4b.

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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