How many chill hours does 75644 get?

75644 averages 829 chill hours per winter, ranging from 445 to 1187 across the last 10 years.

What hardiness zone is 75644?

75644 is in USDA hardiness zone 8b.

Location almanac

The short answer

75644 averages 829 chill hours per winter (445–1,187 across 10 years) in USDA zone 8b.

75644 climate
Average chill hours	829 (445–1,187 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 23 – March 12
First fall frost	typically November 13 – December 8

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 75644’s chill hours and zone:

Chill and zone requirements are comfortably met in 75644.

Show 123 more good fit varieties

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

How many chill hours does 75644 get?: 75644 averages 829 chill hours per winter, ranging from 445 to 1187 across the last 10 years.
What hardiness zone is 75644?: 75644 is in USDA hardiness zone 8b.

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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