How many chill hours does 99668 get?

99668 averages 1093 chill hours per winter, ranging from 744 to 1550 across the last 10 years.

What hardiness zone is 99668?

99668 is in USDA hardiness zone 2b.

Location almanac

The short answer

99668 averages 1,093 chill hours per winter (744–1,550 across 10 years) in USDA zone 2b.

99668 climate
Average chill hours	1,093 (744–1,550 across 10 winters)
USDA hardiness zone	2b
Last spring frost	typically May 4 – May 19
First fall frost	typically September 20 – October 11

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 99668’s chill hours and zone:

Chill and zone requirements are comfortably met in 99668.

Show 28 more good fit varieties

How many chill hours does 99668 get?: 99668 averages 1093 chill hours per winter, ranging from 744 to 1550 across the last 10 years.
What hardiness zone is 99668?: 99668 is in USDA hardiness zone 2b.

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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