How many chill hours does 99672 get?

99672 averages 1457 chill hours per winter, ranging from 910 to 2043 across the last 10 years.

What hardiness zone is 99672?

99672 is in USDA hardiness zone 4b.

Location almanac

The short answer

99672 averages 1,457 chill hours per winter (910–2,043 across 10 years) in USDA zone 4b.

99672 climate
Average chill hours	1,457 (910–2,043 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically April 28 – May 13
First fall frost	typically September 25 – October 18

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 99672’s chill hours and zone:

Chill and zone requirements are comfortably met in 99672.

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How many chill hours does 99672 get?: 99672 averages 1457 chill hours per winter, ranging from 910 to 2043 across the last 10 years.
What hardiness zone is 99672?: 99672 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