How many chill hours does 77450 get?

77450 averages 408 chill hours per winter, ranging from 169 to 515 across the last 10 years.

What hardiness zone is 77450?

77450 is in USDA hardiness zone 9b.

Location almanac

The short answer

77450 averages 408 chill hours per winter (169–515 across 10 years) in USDA zone 9b.

77450 climate
Average chill hours	408 (169–515 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 18 – February 27
First fall frost	typically November 13 – December 20

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 77450’s chill hours and zone:

Chill and zone requirements are comfortably met in 77450.

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 77450 get?: 77450 averages 408 chill hours per winter, ranging from 169 to 515 across the last 10 years.
What hardiness zone is 77450?: 77450 is in USDA hardiness zone 9b.

Growing fruit trees in 77450? Get a care calendar anchored to this exact climate, with email reminders.

[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