How many chill hours does 99702 get?

99702 averages 782 chill hours per winter, ranging from 524 to 1069 across the last 10 years.

What hardiness zone is 99702?

99702 is in USDA hardiness zone 2a.

Location almanac

The short answer

99702 averages 782 chill hours per winter (524–1,069 across 10 years) in USDA zone 2a.

99702 climate
Average chill hours	782 (524–1,069 across 10 winters)
USDA hardiness zone	2a
Last spring frost	typically April 28 – May 19
First fall frost	typically September 22 – October 7

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 99702’s chill hours and zone:

Chill and zone requirements are comfortably met in 99702.

Show 19 more good fit varieties

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

How many chill hours does 99702 get?: 99702 averages 782 chill hours per winter, ranging from 524 to 1069 across the last 10 years.
What hardiness zone is 99702?: 99702 is in USDA hardiness zone 2a.

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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