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Chill hours in 83428

The short answer

83428 averages 660 chill hours per winter (472878 across 10 years) in USDA zone 6a.
83428 climate
Average chill hours660 (472–878 across 10 winters)
USDA hardiness zone6a
Last spring frosttypically June 11 – June 30
First fall frosttypically July 5 – September 17

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 83428’s chill hours and zone:

Marginal (48)

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

Marginal varieties for this location
VarietyFruit
AkaneApple
BraeburnApple
CortlandApple
Cox's Orange PippinApple
EmpireApple
GravensteinApple
HoneycrispApple
JonagoldApple
JonathanApple
LibertyApple
Red DeliciousApple
SpartanApple
WealthyApple
WinesapApple
Yellow TransparentApple
GoldcotApricot
HarcotApricot
Wenatchee MoorparkApricot
HarkoNectarine
IndependenceNectarine
MericrestNectarine
Belle of GeorgiaPeach
ElbertaPeach
FlameprincePeach
FrostPeach
HarvesterPeach
LoringPeach
O'HenryPeach
RedglobePeach
RedskinPeach
Show 18 more marginal varieties
How many chill hours does 83428 get?
83428 averages 660 chill hours per winter, ranging from 472 to 878 across the last 10 years.
What hardiness zone is 83428?
83428 is in USDA hardiness zone 6a.

Growing fruit trees in 83428? 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