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Chill hours in 78883

The short answer

78883 averages 558 chill hours per winter (272726 across 10 years) in USDA zone 8b.
78883 climate
Average chill hours558 (272–726 across 10 winters)
USDA hardiness zone8b
Last spring frosttypically February 12 – March 6
First fall frosttypically October 31 – 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 78883’s chill hours and zone:

Marginal (24)

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

Marginal varieties for this location
VarietyFruit
BraeburnApple
Golden DeliciousApple
GravensteinApple
JonagoldApple
JonathanApple
Red DeliciousApple
HarcotApricot
MoorparkApricot
Puget GoldApricot
TiltonApricot
Wenatchee MoorparkApricot
FlavortopNectarine
IndependenceNectarine
FrostPeach
JunegoldPeach
ComicePear
WarrenPear
Flavor SupremePlum
Green GagePlum
BingSweet Cherry
Black TartarianSweet Cherry
RainierSweet Cherry
VanSweet Cherry
Early RichmondTart Cherry
How many chill hours does 78883 get?
78883 averages 558 chill hours per winter, ranging from 272 to 726 across the last 10 years.
What hardiness zone is 78883?
78883 is in USDA hardiness zone 8b.

Growing fruit trees in 78883? 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