How many chill hours does 31750 get?

31750 averages 582 chill hours per winter, ranging from 322 to 681 across the last 10 years.

What hardiness zone is 31750?

31750 is in USDA hardiness zone 9a.

Location almanac

The short answer

31750 averages 582 chill hours per winter (322–681 across 10 years) in USDA zone 9a.

31750 climate
Average chill hours	582 (322–681 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 28 – March 13
First fall frost	typically November 28 – December 19

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 31750’s chill hours and zone:

Chill and zone requirements are comfortably met in 31750.

Show 48 more good fit varieties

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

How many chill hours does 31750 get?: 31750 averages 582 chill hours per winter, ranging from 322 to 681 across the last 10 years.
What hardiness zone is 31750?: 31750 is in USDA hardiness zone 9a.

Growing fruit trees in 31750? Get a care calendar anchored to this exact climate, with email reminders.

[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026