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Chill hours in 13353

The short answer

13353 averages 1,187 chill hours per winter (9471,574 across 10 years) in USDA zone 4b.
13353 climate
Average chill hours1,187 (947–1,574 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 30 – May 18
First fall frosttypically October 5 – October 24

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 13353’s chill hours and zone:

How many chill hours does 13353 get?
13353 averages 1187 chill hours per winter, ranging from 947 to 1574 across the last 10 years.
What hardiness zone is 13353?
13353 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