How many chill hours does 78002 get?

78002 averages 403 chill hours per winter, ranging from 217 to 495 across the last 10 years.

What hardiness zone is 78002?

78002 is in USDA hardiness zone 9a.

Location almanac

The short answer

78002 averages 403 chill hours per winter (217–495 across 10 years) in USDA zone 9a.

78002 climate
Average chill hours	403 (217–495 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 8 – March 5
First fall frost	typically November 12 – December 19

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 78002’s chill hours and zone:

Chill and zone requirements are comfortably met in 78002.

Show 34 more good fit varieties

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

Marginal varieties for this location
Variety	Fruit
Chojuro	Pear
Shinko	Pear

How many chill hours does 78002 get?: 78002 averages 403 chill hours per winter, ranging from 217 to 495 across the last 10 years.
What hardiness zone is 78002?: 78002 is in USDA hardiness zone 9a.

Growing fruit trees in 78002? 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