How many chill hours does 99569 get?

99569 averages 1671 chill hours per winter, ranging from 1001 to 2390 across the last 10 years.

What hardiness zone is 99569?

99569 is in USDA hardiness zone 4b.

Location almanac

The short answer

99569 averages 1,671 chill hours per winter (1,001–2,390 across 10 years) in USDA zone 4b.

99569 climate
Average chill hours	1,671 (1,001–2,390 across 10 winters)
USDA hardiness zone	4b
Last spring frost	typically April 28 – May 15
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 99569’s chill hours and zone:

Chill and zone requirements are comfortably met in 99569.

Show 90 more good fit varieties

How many chill hours does 99569 get?: 99569 averages 1671 chill hours per winter, ranging from 1001 to 2390 across the last 10 years.
What hardiness zone is 99569?: 99569 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