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Chill hours in 89015

The short answer

89015 averages 842 chill hours per winter (5331,267 across 10 years) in USDA zone 9b.
89015 climate
Average chill hours842 (533–1,267 across 10 winters)
USDA hardiness zone9b
Last spring frosttypically January 13 – February 26
First fall frosttypically November 29 – 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 89015’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 89015 get?
89015 averages 842 chill hours per winter, ranging from 533 to 1267 across the last 10 years.
What hardiness zone is 89015?
89015 is in USDA hardiness zone 9b.

Growing fruit trees in 89015? 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