How many chill hours does 75109 get?

75109 averages 646 chill hours per winter, ranging from 289 to 972 across the last 10 years.

What hardiness zone is 75109?

75109 is in USDA hardiness zone 8b.

Location almanac

The short answer

75109 averages 646 chill hours per winter (289–972 across 10 years) in USDA zone 8b.

75109 climate
Average chill hours	646 (289–972 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 23 – March 7
First fall frost	typically November 12 – December 22

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 75109’s chill hours and zone:

Chill and zone requirements are comfortably met in 75109.

Show 78 more good fit varieties

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

Show 19 more marginal varieties

How many chill hours does 75109 get?: 75109 averages 646 chill hours per winter, ranging from 289 to 972 across the last 10 years.
What hardiness zone is 75109?: 75109 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