Port Arthur, TX Weather & Growing Conditions
This Afternoon
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then showers and thunderstorms likely. Partly sunny. High near 82, with temperatures falling to around 78 in the afternoon. Southwest wind around 10 mph, with gusts as high as 20 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 | 10 mph SW | 70% |
| Tonight | 61°F | Showers And Thunderstorms Likely then Mostly Cloudy | 5 mph NW | 74% |
| Wednesday | 76°F | Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 mph | 1% |
| Thursday | 78°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph E | 24% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 31% |
| Friday | 78°F | Mostly Sunny | 5 mph N | 7% |
| Friday Night | 57°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Saturday | 74°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph N | 15% |
| Saturday Night | 53°F | Slight Chance Rain Showers | 5 to 10 mph N | 18% |
| Sunday | 71°F | Mostly Sunny | 5 to 10 mph N | 8% |
| Sunday Night | 52°F | Mostly Clear | 5 mph N | 3% |
| Monday | 72°F | Sunny | 5 mph NE | 3% |
| Monday Night | 52°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 (7.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.