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Chill hours in 51249

The short answer

51249 averages 1,180 chill hours per winter (8501,340 across 10 years) in USDA zone 4b.
51249 climate
Average chill hours1,180 (850–1,340 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 20 – April 28
First fall frosttypically October 11 – October 27

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 51249’s chill hours and zone:

How many chill hours does 51249 get?
51249 averages 1180 chill hours per winter, ranging from 850 to 1340 across the last 10 years.
What hardiness zone is 51249?
51249 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