How many chill hours does 77701 get?

77701 averages 413 chill hours per winter, ranging from 189 to 529 across the last 10 years.

What hardiness zone is 77701?

77701 is in USDA hardiness zone 9b.

Location almanac

The short answer

77701 averages 413 chill hours per winter (189–529 across 10 years) in USDA zone 9b.

77701 climate
Average chill hours	413 (189–529 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 8 – February 20
First fall frost	typically November 13 – December 23

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 77701’s chill hours and zone:

Chill and zone requirements are comfortably met in 77701.

Show 34 more good fit varieties

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

How many chill hours does 77701 get?: 77701 averages 413 chill hours per winter, ranging from 189 to 529 across the last 10 years.
What hardiness zone is 77701?: 77701 is in USDA hardiness zone 9b.

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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