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Chill hours in 03570

The short answer

03570 averages 1,195 chill hours per winter (9551,663 across 10 years) in USDA zone 4b.
03570 climate
Average chill hours1,195 (955–1,663 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 28 – May 17
First fall frosttypically October 3 – October 23

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 03570’s chill hours and zone:

How many chill hours does 03570 get?
03570 averages 1195 chill hours per winter, ranging from 955 to 1663 across the last 10 years.
What hardiness zone is 03570?
03570 is in USDA hardiness zone 4b.

Growing fruit trees in 03570? Get a care calendar anchored to this exact climate, with email reminders.

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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