How many chill hours does 78830 get?

78830 averages 279 chill hours per winter, ranging from 166 to 391 across the last 10 years.

What hardiness zone is 78830?

78830 is in USDA hardiness zone 9a.

Location almanac

The short answer

78830 averages 279 chill hours per winter (166–391 across 10 years) in USDA zone 9a.

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 78830’s chill hours and zone:

Chill and zone requirements are comfortably met in 78830.

Show 13 more good fit varieties

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

How many chill hours does 78830 get?: 78830 averages 279 chill hours per winter, ranging from 166 to 391 across the last 10 years.
What hardiness zone is 78830?: 78830 is in USDA hardiness zone 9a.

Growing fruit trees in 78830? 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