Port Lavaca, TX Weather & Growing Conditions
Today
90°F
Sunny
Sunny, with a high near 90. Heat index values as high as 105. South southeast wind 7 to 15 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 7 to 15 mph SSE | 2% |
| Tonight | 80°F | Mostly Clear | 8 to 15 mph SSE | 1% |
| Wednesday | 90°F | Sunny | 8 to 14 mph SSE | 1% |
| Wednesday Night | 80°F | Mostly Clear | 8 to 14 mph SSE | 0% |
| Thursday | 90°F | Sunny | 7 to 14 mph SSE | 7% |
| Thursday Night | 80°F | Mostly Clear | 6 to 14 mph SSE | 7% |
| Friday | 90°F | Slight Chance Showers And Thunderstorms | 5 to 13 mph SSE | 20% |
| Friday Night | 79°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 to 13 mph SSE | 18% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms | 2 to 13 mph SE | 20% |
| Saturday Night | 80°F | Mostly Clear | 5 to 13 mph SSE | 13% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms | 3 to 13 mph SSE | 22% |
| Sunday Night | 80°F | Partly Cloudy | 7 to 13 mph SSE | 14% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms | 6 to 15 mph S | 17% |
| Monday Night | 81°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 10 to 15 mph SSE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Lavaca, TX
Last spring frost
Feb 1
First fall frost
Dec 21
Growing season
321 days
Hardiness zone
9b
Explore more for Port Lavaca, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Pt Comfort, Tx (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.