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Chill hours in 89002

The short answer

89002 averages 842 chill hours per winter (5331,267 across 10 years) in USDA zone 9b.
89002 climate
Average chill hours842 (533–1,267 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically January 13 – February 26
First fall frosttypically November 26 – 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 89002’s chill hours and zone:

Marginal (2)

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

Marginal varieties for this location
VarietyFruit
CresthavenPeach
RedhavenPeach
How many chill hours does 89002 get?
89002 averages 842 chill hours per winter, ranging from 533 to 1267 across the last 10 years.
What hardiness zone is 89002?
89002 is in USDA hardiness zone 9b.

Growing fruit trees in 89002? 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