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Chill hours in 99762

The short answer

99762 averages 858 chill hours per winter (6471,048 across 10 years) in USDA zone 3b.
99762 climate
Average chill hours858 (647–1,048 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically May 29 – June 11
First fall frosttypically August 27 – September 22

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 99762’s chill hours and zone:

Marginal (1)

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

Marginal varieties for this location
VarietyFruit
CresthavenPeach
How many chill hours does 99762 get?
99762 averages 858 chill hours per winter, ranging from 647 to 1048 across the last 10 years.
What hardiness zone is 99762?
99762 is in USDA hardiness zone 3b.

Growing fruit trees in 99762? 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