How many chill hours does 55736 get?

55736 averages 1044 chill hours per winter, ranging from 784 to 1355 across the last 10 years.

What hardiness zone is 55736?

55736 is in USDA hardiness zone 4a.

Location almanac

The short answer

55736 averages 1,044 chill hours per winter (784–1,355 across 10 years) in USDA zone 4a.

55736 climate
Average chill hours	1,044 (784–1,355 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically April 28 – May 16
First fall frost	typically September 29 – October 28

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 55736’s chill hours and zone:

Chill and zone requirements are comfortably met in 55736.

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How many chill hours does 55736 get?: 55736 averages 1044 chill hours per winter, ranging from 784 to 1355 across the last 10 years.
What hardiness zone is 55736?: 55736 is in USDA hardiness zone 4a.

Growing fruit trees in 55736? Get a care calendar anchored to this exact climate, with email reminders.

[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