How many chill hours does 78255 get?

78255 averages 495 chill hours per winter, ranging from 272 to 640 across the last 10 years.

What hardiness zone is 78255?

78255 is in USDA hardiness zone 8b.

Location almanac

The short answer

78255 averages 495 chill hours per winter (272–640 across 10 years) in USDA zone 8b.

78255 climate
Average chill hours	495 (272–640 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically February 1 – March 6
First fall frost	typically November 12 – 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 78255’s chill hours and zone:

Chill and zone requirements are comfortably met in 78255.

Show 55 more good fit varieties

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

How many chill hours does 78255 get?: 78255 averages 495 chill hours per winter, ranging from 272 to 640 across the last 10 years.
What hardiness zone is 78255?: 78255 is in USDA hardiness zone 8b.

Growing fruit trees in 78255? 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