How many chill hours does 99746 get?

99746 averages 741 chill hours per winter, ranging from 506 to 955 across the last 10 years.

What hardiness zone is 99746?

99746 is in USDA hardiness zone 2a.

Location almanac

The short answer

99746 averages 741 chill hours per winter (506–955 across 10 years) in USDA zone 2a.

99746 climate
Average chill hours	741 (506–955 across 10 winters)
USDA hardiness zone	2a
Last spring frost	typically May 6 – May 27
First fall frost	typically September 17 – 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 99746’s chill hours and zone:

Chill and zone requirements are comfortably met in 99746.

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 99746 get?: 99746 averages 741 chill hours per winter, ranging from 506 to 955 across the last 10 years.
What hardiness zone is 99746?: 99746 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