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Chill hours in 78065

The short answer

78065 averages 364 chill hours per winter (198448 across 10 years) in USDA zone 9a.
78065 climate
Average chill hours364 (198–448 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 8 – March 5

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 78065’s chill hours and zone:

Marginal (8)

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

Marginal varieties for this location
VarietyFruit
BlenheimApricot
GulfprincePeach
MoonglowPear
Dapple DandyPlum
Flavor KingPlum
ShiroPlum
StellaSweet Cherry
Evans BaliTart Cherry
How many chill hours does 78065 get?
78065 averages 364 chill hours per winter, ranging from 198 to 448 across the last 10 years.
What hardiness zone is 78065?
78065 is in USDA hardiness zone 9a.

Growing fruit trees in 78065? Get a care calendar anchored to this exact climate, with email reminders.

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Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026