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Chill hours in 56549

The short answer

56549 averages 993 chill hours per winter (6371,287 across 10 years) in USDA zone 4a.
56549 climate
Average chill hours993 (637–1,287 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 25 – May 13
First fall frosttypically October 7 – October 21

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 56549’s chill hours and zone:

Marginal (1)

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

Marginal varieties for this location
VarietyFruit
ReliancePeach
How many chill hours does 56549 get?
56549 averages 993 chill hours per winter, ranging from 637 to 1287 across the last 10 years.
What hardiness zone is 56549?
56549 is in USDA hardiness zone 4a.

Growing fruit trees in 56549? 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