How many chill hours does 41603 get?

41603 averages 1370 chill hours per winter, ranging from 1123 to 1645 across the last 10 years.

What hardiness zone is 41603?

41603 is in USDA hardiness zone 7a.

Location almanac

The short answer

41603 averages 1,370 chill hours per winter (1,123–1,645 across 10 years) in USDA zone 7a.

41603 climate
Average chill hours	1,370 (1,123–1,645 across 10 winters)
USDA hardiness zone	7a
Last spring frost	typically March 29 – April 25
First fall frost	typically November 1 – November 23

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 41603’s chill hours and zone:

Chill and zone requirements are comfortably met in 41603.

Show 131 more good fit varieties

How many chill hours does 41603 get?: 41603 averages 1370 chill hours per winter, ranging from 1123 to 1645 across the last 10 years.
What hardiness zone is 41603?: 41603 is in USDA hardiness zone 7a.

Growing fruit trees in 41603? 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