How many chill hours does 99756 get?

99756 averages 678 chill hours per winter, ranging from 470 to 982 across the last 10 years.

What hardiness zone is 99756?

99756 is in USDA hardiness zone 1b.

Location almanac

The short answer

99756 averages 678 chill hours per winter (470–982 across 10 years) in USDA zone 1b.

99756 climate
Average chill hours	678 (470–982 across 10 winters)
USDA hardiness zone	1b
Last spring frost	typically May 1 – May 16
First fall frost	typically September 20 – September 28

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 99756’s chill hours and zone:

Chill and zone requirements are comfortably met in 99756.

Show 6 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 99756 get?: 99756 averages 678 chill hours per winter, ranging from 470 to 982 across the last 10 years.
What hardiness zone is 99756?: 99756 is in USDA hardiness zone 1b.

Growing fruit trees in 99756? 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