How many chill hours does 99553 get?

99553 averages 2837 chill hours per winter, ranging from 2262 to 3323 across the last 10 years.

What hardiness zone is 99553?

99553 is in USDA hardiness zone 8a.

Location almanac

The short answer

99553 averages 2,837 chill hours per winter (2,262–3,323 across 10 years) in USDA zone 8a.

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 99553’s chill hours and zone:

Chill and zone requirements are comfortably met in 99553.

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How many chill hours does 99553 get?: 99553 averages 2837 chill hours per winter, ranging from 2262 to 3323 across the last 10 years.
What hardiness zone is 99553?: 99553 is in USDA hardiness zone 8a.

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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