San Ygnacio, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Ygnacio, a community in Zapata County, Texas.
Today
104°F
Sunny
Sunny, with a high near 104. Heat index values as high as 108. Southeast wind around 14 mph, with gusts as high as 21 mph.
7-day forecast for San Ygnacio
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 104°F | Sunny | 14 mph SE | 2% |
| Tonight | 80°F | Partly Cloudy | 10 to 14 mph SE | 6% |
| Wednesday | 104°F | Mostly Sunny | 13 mph SE | 4% |
| Wednesday Night | 79°F | Mostly Clear | 10 to 14 mph SE | 0% |
| Thursday | 105°F | Sunny | 9 to 13 mph SE | 4% |
| Thursday Night | 79°F | Mostly Clear | 9 to 14 mph SE | 4% |
| Friday | 104°F | Sunny | 10 mph SE | 1% |
| Friday Night | 79°F | Mostly Clear | 7 to 13 mph SE | 1% |
| Saturday | 103°F | Sunny | 6 to 9 mph SE | 0% |
| Saturday Night | 79°F | Mostly Clear | 7 to 12 mph SE | 3% |
| Sunday | 103°F | Sunny | 6 to 10 mph SE | 2% |
| Sunday Night | 79°F | Mostly Clear | 9 to 13 mph SE | 2% |
| Monday | 105°F | Sunny | 8 to 14 mph SE | 1% |
| Monday Night | 79°F | Mostly Clear | 15 mph SE | 1% |
Forecast source: National Weather Service (api.weather.gov) for San Ygnacio (27.053, -99.424). Updated through the day.
Growing snapshot for San Ygnacio
Last spring frost
Jan 19
First fall frost
Dec 22
Growing season
341 days
Hardiness zone
9b
More local growing data for San Ygnacio: nearby ZIP 78067 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Falcon Lake Estates
Falcon Mesa
Las Palmas
Lopeño
Medina
Morales-Sanchez
New Falcon
Ramireno
Siesta Shores
Zapata
Climate data from the nearest NOAA station, Zapata 1 S, Tx (17.5 mi from San Ygnacio). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.