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Weather & Climate
Port Arthur, Texas, United States
Overview
Climate data and monthly weather averages for Port Arthur.
Key Metrics
Annual Avg
20.8°C
Summer Avg
28.4°C
Winter Avg
12.3°C
Record High
39°C
Record Low
-6°C
Annual Precipitation
1621.2 mm
Avg Humidity
79%
Summer Humidity
76%
Winter Humidity
84%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 23.1° | 11.1° | -6° | 130.5 | 84% | 90 | 43.3 |
| Feb | 24.9° | 13.1° | -4.6° | 93 | 84% | 95 | 38.2 |
| Mar | 28.2° | 16.9° | -2.6° | 96.4 | 82% | 146 | 37.7 |
| Apr | 33° | 20.7° | 3.3° | 108.6 | 80% | 170 | 38.4 |
| May | 35.5° | 24.7° | 10° | 130.5 | 77% | 201 | 36.2 |
| Jun | 38.3° | 27.9° | 19.5° | 170.7 | 75% | 197 | 43.3 |
| Jul | 37.3° | 28.5° | 20.6° | 157.5 | 77% | 190 | 36.8 |
| Aug | 39° | 28.8° | 17.8° | 186 | 76% | 179 | 44.1 |
| Sep | 37.2° | 26.5° | 13.3° | 165.9 | 77% | 153 | 77.7 |
| Oct | 32.2° | 22° | 5.1° | 146 | 77% | 140 | 50.1 |
| Nov | 29.2° | 16.7° | -1.1° | 107.1 | 80% | 103 | 38.5 |
| Dec | 24.9° | 12.6° | -1.1° | 129 | 83% | 82 | 38.4 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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