Port Arthur, TX Weather & Growing Conditions
This Afternoon
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then showers and thunderstorms likely. Partly sunny, with a high near 82. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 69% |
| Tonight | 61°F | Showers And Thunderstorms Likely then Mostly Cloudy | 5 mph NW | 72% |
| Wednesday | 76°F | Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 59°F | Clear | 0 mph | 1% |
| Thursday | 78°F | Mostly Sunny then Chance Rain Showers | 0 to 5 mph E | 25% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 33% |
| Friday | 78°F | Mostly Sunny | 5 mph N | 7% |
| Friday Night | 59°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 74°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph N | 15% |
| Saturday Night | 55°F | Slight Chance Rain Showers | 5 mph N | 19% |
| Sunday | 70°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 53°F | Mostly Clear | 5 mph N | 3% |
| Monday | 71°F | Sunny | 5 mph NE | 3% |
| Monday Night | 53°F | Mostly Clear | 0 to 5 mph NE | 2% |
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 (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.