How many chill hours does 89703 get?

89703 averages 1122 chill hours per winter, ranging from 580 to 1600 across the last 10 years.

What hardiness zone is 89703?

89703 is in USDA hardiness zone 7b.

Location almanac

The short answer

89703 averages 1,122 chill hours per winter (580–1,600 across 10 years) in USDA zone 7b.

89703 climate
Average chill hours	1,122 (580–1,600 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically June 2 – June 19
First fall frost	typically September 16 – October 5

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 89703’s chill hours and zone:

Chill and zone requirements are comfortably met in 89703.

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How many chill hours does 89703 get?: 89703 averages 1122 chill hours per winter, ranging from 580 to 1600 across the last 10 years.
What hardiness zone is 89703?: 89703 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