How many chill hours does 70446 get?

70446 averages 506 chill hours per winter, ranging from 283 to 658 across the last 10 years.

What hardiness zone is 70446?

70446 is in USDA hardiness zone 9a.

Location almanac

The short answer

70446 averages 506 chill hours per winter (283–658 across 10 years) in USDA zone 9a.

70446 climate
Average chill hours	506 (283–658 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 19 – March 13
First fall frost	typically November 13 – December 27

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 70446’s chill hours and zone:

Chill and zone requirements are comfortably met in 70446.

Show 48 more good fit varieties

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

How many chill hours does 70446 get?: 70446 averages 506 chill hours per winter, ranging from 283 to 658 across the last 10 years.
What hardiness zone is 70446?: 70446 is in USDA hardiness zone 9a.

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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