Port Arthur, TX Weather & Growing Conditions
Today
92°F
Sunny
Sunny, with a high near 92. Heat index values as high as 99. East wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 5 to 10 mph E | 0% |
| Tonight | 77°F | Mostly Clear | 0 to 5 mph SE | 3% |
| Sunday | 92°F | Mostly Sunny | 0 to 5 mph E | 11% |
| Sunday Night | 77°F | Mostly Clear | 0 to 5 mph S | 0% |
| Monday | 93°F | Sunny | 0 to 5 mph E | 7% |
| Monday Night | 77°F | Mostly Clear | 0 to 5 mph SW | 7% |
| Tuesday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 15% |
| Tuesday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 15% |
| Wednesday | 94°F | Sunny | 0 to 5 mph NE | 9% |
| Wednesday Night | 76°F | Mostly Clear | 0 to 5 mph E | 9% |
| Thursday | 91°F | Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 74°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 90°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Friday Night | 74°F | Partly Cloudy | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Arthur, TX
Last spring frost
Feb 14
First fall frost
Dec 7
Growing season
301 days
Hardiness zone
9b
Explore more for Port Arthur, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Port Arthur Se Tx Ap, Tx (7.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.