Planting zone for 00690 — San Antonio, PR
ZIP code 00690 (San Antonio, Aguadilla County) is in USDA zone 13a: the coldest winter night averages 60 to 65 °F.
Where ZIP 00690 is
Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoomNot the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.
The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 13a means →
Frost forecast — next 7 nights
live from the National Weather ServiceLoading the forecast for San Antonio, PR…
Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.
Frost dates
Frost is rare or absent here: San Antonio, PR is in zone 13a, where the coldest night of a typical winter stays above freezing. Cool-season vegetables grow best from fall through spring; summer heat, not frost, is the limit.
Soil in San Antonio, PR
The center of ZIP 00690 is mapped as Urban land: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.
Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 00690; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.
Climate in San Antonio, PR
Daylight is calculated from latitude.
Nearby ZIP codes
3 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.
Questions about 00690
What planting zone is ZIP code 00690?
ZIP code 00690 (San Antonio, PR) is in USDA hardiness zone 13a on the 2023 map: the coldest night of an average winter reaches 60 to 65 °F (15.6 to 18.3 °C).
What kind of onions grow in San Antonio, PR?
Short-day onions: the longest day near 00690 is 13 h 14 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.