How many chill hours does 99769 get?

99769 averages 1309 chill hours per winter, ranging from 1012 to 1558 across the last 10 years.

What hardiness zone is 99769?

99769 is in USDA hardiness zone 4a.

Location almanac

The short answer

99769 averages 1,309 chill hours per winter (1,012–1,558 across 10 years) in USDA zone 4a.

99769 climate
Average chill hours	1,309 (1,012–1,558 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically June 1 – June 12
First fall frost	typically September 26 – October 20

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 99769’s chill hours and zone:

Chill and zone requirements are comfortably met in 99769.

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How many chill hours does 99769 get?: 99769 averages 1309 chill hours per winter, ranging from 1012 to 1558 across the last 10 years.
What hardiness zone is 99769?: 99769 is in USDA hardiness zone 4a.

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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