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Chill hours in 97149

The short answer

97149 averages 2,461 chill hours per winter (2,1902,798 across 10 years) in USDA zone 9a.
97149 climate
Average chill hours2,461 (2,190–2,798 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically January 31 – April 17
First fall frosttypically October 25 – December 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 97149’s chill hours and zone:

How many chill hours does 97149 get?
97149 averages 2461 chill hours per winter, ranging from 2190 to 2798 across the last 10 years.
What hardiness zone is 97149?
97149 is in USDA hardiness zone 9a.

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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