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Chill hours in 77984

The short answer

77984 averages 416 chill hours per winter (186537 across 10 years) in USDA zone 9a.
77984 climate
Average chill hours416 (186–537 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 20 – March 6

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 77984’s chill hours and zone:

Marginal (14)

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

Marginal varieties for this location
VarietyFruit
MutsuApple
TomcotApricot
FantasiaNectarine
SuncrestPeach
BartlettPear
BoscPear
ChojuroPear
ShinkoPear
Elephant HeartPlum
BrooksSweet Cherry
Craig's CrimsonSweet Cherry
LapinsSweet Cherry
Royal RainierSweet Cherry
English MorelloTart Cherry
How many chill hours does 77984 get?
77984 averages 416 chill hours per winter, ranging from 186 to 537 across the last 10 years.
What hardiness zone is 77984?
77984 is in USDA hardiness zone 9a.

Growing fruit trees in 77984? 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