How many chill hours does 12943 get?

12943 averages 846 chill hours per winter, ranging from 618 to 1124 across the last 10 years.

What hardiness zone is 12943?

12943 is in USDA hardiness zone 4a.

Location almanac

The short answer

12943 averages 846 chill hours per winter (618–1,124 across 10 years) in USDA zone 4a.

12943 climate
Average chill hours	846 (618–1,124 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically May 21 – June 14
First fall frost	typically September 16 – October 9

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 12943’s chill hours and zone:

Chill and zone requirements are comfortably met in 12943.

Show 87 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 12943 get?: 12943 averages 846 chill hours per winter, ranging from 618 to 1124 across the last 10 years.
What hardiness zone is 12943?: 12943 is in USDA hardiness zone 4a.

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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