How many chill hours does 99732 get?

99732 averages 618 chill hours per winter, ranging from 415 to 850 across the last 10 years.

What hardiness zone is 99732?

99732 is in USDA hardiness zone 1b.

Location almanac

The short answer

99732 averages 618 chill hours per winter (415–850 across 10 years) in USDA zone 1b.

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 99732’s chill hours and zone:

Chill and zone requirements are comfortably met in 99732.

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

How many chill hours does 99732 get?: 99732 averages 618 chill hours per winter, ranging from 415 to 850 across the last 10 years.
What hardiness zone is 99732?: 99732 is in USDA hardiness zone 1b.

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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