How many chill hours does 73103 get?

73103 averages 1214 chill hours per winter, ranging from 958 to 1545 across the last 10 years.

What hardiness zone is 73103?

73103 is in USDA hardiness zone 7b.

Location almanac

The short answer

73103 averages 1,214 chill hours per winter (958–1,545 across 10 years) in USDA zone 7b.

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 73103’s chill hours and zone:

Chill and zone requirements are comfortably met in 73103.

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How many chill hours does 73103 get?: 73103 averages 1214 chill hours per winter, ranging from 958 to 1545 across the last 10 years.
What hardiness zone is 73103?: 73103 is in USDA hardiness zone 7b.

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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