Location almanac
Chill hours in 33991
The short answer
33991 averages 20 chill hours per winter (1–54 across 10 years) in USDA zone 10b.
Climate profile
| Average chill hours | 20 (1–54 across 10 winters) |
|---|---|
| USDA hardiness zone | 10b |
Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.
What grows here
Every variety in our database, checked against 33991’s chill hours and zone:
Good fit (7)
Chill and zone requirements are comfortably met in 33991.
| Variety | Fruit |
|---|---|
| Bearss Lime | Citrus |
| Eureka Lemon | Citrus |
| Improved Meyer Lemon | Citrus |
| Key Lime | Citrus |
| Violette de Bordeaux | Fig |
| Angel Red | Pomegranate |
| Salavatski | Pomegranate |
Questions
- How many chill hours does 33991 get?
- 33991 averages 20 chill hours per winter, ranging from 1 to 54 across the last 10 years.
- What hardiness zone is 33991?
- 33991 is in USDA hardiness zone 10b.
Growing fruit trees in 33991? Get a care calendar anchored to this exact climate, with email reminders.
Start My OrchardSources
- [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