How many chill hours does 55606 get?

55606 averages 970 chill hours per winter, ranging from 544 to 1392 across the last 10 years.

What hardiness zone is 55606?

55606 is in USDA hardiness zone 4a.

Location almanac

The short answer

55606 averages 970 chill hours per winter (544–1,392 across 10 years) in USDA zone 4a.

55606 climate
Average chill hours	970 (544–1,392 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically May 4 – May 19
First fall frost	typically September 29 – October 27

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 55606’s chill hours and zone:

Chill and zone requirements are comfortably met in 55606.

Show 89 more good fit varieties

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

Marginal varieties for this location
Variety	Fruit
Reliance	Peach

How many chill hours does 55606 get?: 55606 averages 970 chill hours per winter, ranging from 544 to 1392 across the last 10 years.
What hardiness zone is 55606?: 55606 is in USDA hardiness zone 4a.

Growing fruit trees in 55606? 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