How many chill hours does 99747 get?

99747 averages 693 chill hours per winter, ranging from 417 to 849 across the last 10 years.

What hardiness zone is 99747?

99747 is in USDA hardiness zone 3a.

Location almanac

The short answer

99747 averages 693 chill hours per winter (417–849 across 10 years) in USDA zone 3a.

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 99747’s chill hours and zone:

Chill and zone requirements are comfortably met in 99747.

Show 16 more good fit varieties

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

How many chill hours does 99747 get?: 99747 averages 693 chill hours per winter, ranging from 417 to 849 across the last 10 years.
What hardiness zone is 99747?: 99747 is in USDA hardiness zone 3a.

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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