How many chill hours does 99558 get?

99558 averages 988 chill hours per winter, ranging from 760 to 1207 across the last 10 years.

What hardiness zone is 99558?

99558 is in USDA hardiness zone 3b.

Location almanac

The short answer

99558 averages 988 chill hours per winter (760–1,207 across 10 years) in USDA zone 3b.

99558 climate
Average chill hours	988 (760–1,207 across 10 winters)
USDA hardiness zone	3b
Last spring frost	typically May 5 – May 28
First fall frost	typically September 19 – September 29

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 99558’s chill hours and zone:

Chill and zone requirements are comfortably met in 99558.

Show 41 more good fit varieties

How many chill hours does 99558 get?: 99558 averages 988 chill hours per winter, ranging from 760 to 1207 across the last 10 years.
What hardiness zone is 99558?: 99558 is in USDA hardiness zone 3b.

Growing fruit trees in 99558? Get a care calendar anchored to this exact climate, with email reminders.

[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