How many chill hours does 99757 get?

99757 averages 709 chill hours per winter, ranging from 535 to 952 across the last 10 years.

What hardiness zone is 99757?

99757 is in USDA hardiness zone 2b.

Location almanac

The short answer

99757 averages 709 chill hours per winter (535–952 across 10 years) in USDA zone 2b.

99757 climate
Average chill hours	709 (535–952 across 10 winters)
USDA hardiness zone	2b
Last spring frost	typically May 1 – May 23
First fall frost	typically September 21 – October 6

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 99757’s chill hours and zone:

Chill and zone requirements are comfortably met in 99757.

Show 11 more good fit varieties

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

How many chill hours does 99757 get?: 99757 averages 709 chill hours per winter, ranging from 535 to 952 across the last 10 years.
What hardiness zone is 99757?: 99757 is in USDA hardiness zone 2b.

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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