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Chill hours in 31207

The short answer

31207 averages 803 chill hours per winter (569930 across 10 years) in USDA zone 9a.
31207 climate
Average chill hours803 (569–930 across 10 winters)
USDA hardiness zone9a
Last spring frosttypically February 27 – March 29
First fall frosttypically November 18 – December 11

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 31207’s chill hours and zone:

Marginal (2)

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

Marginal varieties for this location
VarietyFruit
CresthavenPeach
RedhavenPeach
How many chill hours does 31207 get?
31207 averages 803 chill hours per winter, ranging from 569 to 930 across the last 10 years.
What hardiness zone is 31207?
31207 is in USDA hardiness zone 9a.

Growing fruit trees in 31207? 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