Port Isabel, TX Weather & Growing Conditions
Today
94°F
Sunny
Sunny. High near 94, with temperatures falling to around 90 in the afternoon. Northeast wind 1 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Sunny | 1 to 13 mph NE | 7% |
| Tonight | 78°F | Mostly Clear | 1 to 12 mph SE | 2% |
| Sunday | 94°F | Sunny | 0 to 12 mph NNE | 13% |
| Sunday Night | 79°F | Partly Cloudy | 2 to 12 mph ESE | 3% |
| Monday | 94°F | Slight Chance Showers And Thunderstorms | 0 to 13 mph ESE | 22% |
| Monday Night | 79°F | Slight Chance Rain Showers then Clear | 1 to 12 mph ESE | 22% |
| Tuesday | 94°F | Chance Showers And Thunderstorms | 1 to 14 mph E | 34% |
| Tuesday Night | 80°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 13 mph E | 34% |
| Wednesday | 94°F | Chance Showers And Thunderstorms | 1 to 15 mph ENE | 38% |
| Wednesday Night | 80°F | Chance Showers And Thunderstorms | 3 to 14 mph E | 38% |
| Thursday | 94°F | Chance Showers And Thunderstorms | 5 to 15 mph ENE | 43% |
| Thursday Night | 80°F | Chance Showers And Thunderstorms | 6 to 14 mph ENE | 39% |
| Friday | 93°F | Chance Showers And Thunderstorms | 6 to 15 mph ENE | 44% |
| Friday Night | 79°F | Chance Showers And Thunderstorms | 5 to 14 mph ENE | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Isabel, TX
Last spring frost
Jan 3
First fall frost
Jan 1
Growing season
365 days
Hardiness zone
10a
Explore more for Port Isabel, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Port Isabel, Tx (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.