How many chill hours does 99676 get?

99676 averages 784 chill hours per winter, ranging from 369 to 1115 across the last 10 years.

What hardiness zone is 99676?

99676 is in USDA hardiness zone 4b.

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The short answer

99676 averages 784 chill hours per winter (369–1,115 across 10 years) in USDA zone 4b.

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 99676’s chill hours and zone:

Chill and zone requirements are comfortably met in 99676.

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

How many chill hours does 99676 get?: 99676 averages 784 chill hours per winter, ranging from 369 to 1115 across the last 10 years.
What hardiness zone is 99676?: 99676 is in USDA hardiness zone 4b.

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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