How many chill hours does 99739 get?

99739 averages 922 chill hours per winter, ranging from 731 to 1140 across the last 10 years.

What hardiness zone is 99739?

99739 is in USDA hardiness zone 3b.

Location almanac

The short answer

99739 averages 922 chill hours per winter (731–1,140 across 10 years) in USDA zone 3b.

99739 climate
Average chill hours	922 (731–1,140 across 10 winters)
USDA hardiness zone	3b
Last spring frost	typically May 8 – June 8
First fall frost	typically September 15 – September 30

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 99739’s chill hours and zone:

Chill and zone requirements are comfortably met in 99739.

Show 41 more good fit varieties

How many chill hours does 99739 get?: 99739 averages 922 chill hours per winter, ranging from 731 to 1140 across the last 10 years.
What hardiness zone is 99739?: 99739 is in USDA hardiness zone 3b.

Growing fruit trees in 99739? 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