How many chill hours does 99656 get?

99656 averages 1002 chill hours per winter, ranging from 755 to 1286 across the last 10 years.

What hardiness zone is 99656?

99656 is in USDA hardiness zone 3a.

Location almanac

The short answer

99656 averages 1,002 chill hours per winter (755–1,286 across 10 years) in USDA zone 3a.

99656 climate
Average chill hours	1,002 (755–1,286 across 10 winters)
USDA hardiness zone	3a
Last spring frost	typically May 8 – May 28
First fall frost	typically September 18 – October 1

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 99656’s chill hours and zone:

Chill and zone requirements are comfortably met in 99656.

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How many chill hours does 99656 get?: 99656 averages 1002 chill hours per winter, ranging from 755 to 1286 across the last 10 years.
What hardiness zone is 99656?: 99656 is in USDA hardiness zone 3a.

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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