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Chill hours in 78216

The short answer

78216 averages 452 chill hours per winter (238572 across 10 years) in USDA zone 9a.
78216 climate
Average chill hours452 (238–572 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 17 – March 6
First fall frosttypically 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 78216’s chill hours and zone:

Marginal (12)

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

Marginal varieties for this location
VarietyFruit
MutsuApple
TomcotApricot
FantasiaNectarine
SuncrestPeach
BartlettPear
BoscPear
Elephant HeartPlum
BrooksSweet Cherry
Craig's CrimsonSweet Cherry
LapinsSweet Cherry
Royal RainierSweet Cherry
English MorelloTart Cherry
How many chill hours does 78216 get?
78216 averages 452 chill hours per winter, ranging from 238 to 572 across the last 10 years.
What hardiness zone is 78216?
78216 is in USDA hardiness zone 9a.

Growing fruit trees in 78216? 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