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Chill hours in 39561

The short answer

39561 averages 519 chill hours per winter (301682 across 10 years) in USDA zone 9a.
39561 climate
Average chill hours519 (301–682 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 19 – March 13
First fall frosttypically November 13 – 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 39561’s chill hours and zone:

Marginal (7)

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

Marginal varieties for this location
VarietyFruit
MoorparkApricot
Puget GoldApricot
TiltonApricot
FlavortopNectarine
JunegoldPeach
ComicePear
WarrenPear
How many chill hours does 39561 get?
39561 averages 519 chill hours per winter, ranging from 301 to 682 across the last 10 years.
What hardiness zone is 39561?
39561 is in USDA hardiness zone 9a.

Growing fruit trees in 39561? 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