How many chill hours does 17870 get?

17870 averages 1713 chill hours per winter, ranging from 1428 to 1996 across the last 10 years.

What hardiness zone is 17870?

17870 is in USDA hardiness zone 6b.

Location almanac

The short answer

17870 averages 1,713 chill hours per winter (1,428–1,996 across 10 years) in USDA zone 6b.

17870 climate
Average chill hours	1,713 (1,428–1,996 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically April 9 – April 29
First fall frost	typically November 2 – November 19

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 17870’s chill hours and zone:

Chill and zone requirements are comfortably met in 17870.

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How many chill hours does 17870 get?: 17870 averages 1713 chill hours per winter, ranging from 1428 to 1996 across the last 10 years.
What hardiness zone is 17870?: 17870 is in USDA hardiness zone 6b.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026