How many chill hours does 55401 get?

55401 averages 1191 chill hours per winter, ranging from 1020 to 1451 across the last 10 years.

What hardiness zone is 55401?

55401 is in USDA hardiness zone 5a.

Location almanac

The short answer

55401 averages 1,191 chill hours per winter (1,020–1,451 across 10 years) in USDA zone 5a.

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 55401’s chill hours and zone:

Chill and zone requirements are comfortably met in 55401.

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

How many chill hours does 55401 get?: 55401 averages 1191 chill hours per winter, ranging from 1020 to 1451 across the last 10 years.
What hardiness zone is 55401?: 55401 is in USDA hardiness zone 5a.

Growing fruit trees in 55401? Save your first tree free and see this month’s care tasks for this climate.

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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