Humid subtropical climate
Climate Port Arthur - Texas
Annual high78ºF
Annual low60ºF
Precipitation60.47 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 62 | 43 | 5.26 |
| Feb | 65 | 47 | 3.58 |
| Mar | 72 | 52 | 3.53 |
| Apr | 78 | 59 | 3.21 |
| May | 85 | 67 | 5.23 |
| Jun | 90 | 73 | 7.09 |
| Jul | 92 | 74 | 5.95 |
| Aug | 92 | 74 | 5.38 |
| Sep | 88 | 70 | 5.97 |
| Oct | 81 | 60 | 5.58 |
| Nov | 72 | 52 | 4.40 |
| Dec | 64 | 45 | 5.29 |
- JanHigh 62ºFLow 43ºFPrecip 5.26 inch
- FebHigh 65ºFLow 47ºFPrecip 3.58 inch
- MarHigh 72ºFLow 52ºFPrecip 3.53 inch
- AprHigh 78ºFLow 59ºFPrecip 3.21 inch
- MayHigh 85ºFLow 67ºFPrecip 5.23 inch
- JunHigh 90ºFLow 73ºFPrecip 7.09 inch
- JulHigh 92ºFLow 74ºFPrecip 5.95 inch
- AugHigh 92ºFLow 74ºFPrecip 5.38 inch
- SepHigh 88ºFLow 70ºFPrecip 5.97 inch
- OctHigh 81ºFLow 60ºFPrecip 5.58 inch
- NovHigh 72ºFLow 52ºFPrecip 4.40 inch
- DecHigh 64ºFLow 45ºFPrecip 5.29 inch
Climate summary
What is the average weather in Port Arthur, Texas?
Port Arthur experiences a humid subtropical climate, characterized by hot summers and cool winters. The area is quite wet, with high annual precipitation. Summers are the wettest season, often bringing heavy downpours and afternoon thunderstorms. While spring is comparatively drier, rainfall is abundant throughout the year.
Port Arthur weather averages
Annual high78ºF
Annual low60ºF
Precipitation60.47 inch
Daily normals Port Arthur - Texas - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 63.3 | 43.8 | 0.16 | 0.16 |
| Jan 2 | 63.2 | 43.7 | 0.33 | 0.33 |
| Jan 3 | 63.2 | 43.7 | 0.49 | 0.49 |
| Jan 4 | 63.1 | 43.6 | 0.67 | 0.67 |
| Jan 5 | 63.1 | 43.5 | 0.84 | 0.84 |
| Jan 6 | 63.0 | 43.5 | 1.01 | 1.01 |
| Jan 7 | 63.0 | 43.4 | 1.18 | 1.18 |
| Jan 8 | 63.0 | 43.4 | 1.36 | 1.36 |
| Jan 9 | 63.0 | 43.4 | 1.54 | 1.54 |
| Jan 10 | 63.0 | 43.4 | 1.71 | 1.71 |
| Jan 11 | 63.0 | 43.4 | 1.90 | 1.90 |
| Jan 12 | 63.0 | 43.4 | 2.08 | 2.08 |
| Jan 13 | 63.1 | 43.4 | 2.27 | 2.27 |
| Jan 14 | 63.1 | 43.4 | 2.46 | 2.46 |
| Jan 15 | 63.1 | 43.4 | 2.65 | 2.65 |
| Jan 16 | 63.2 | 43.5 | 2.84 | 2.84 |
| Jan 17 | 63.3 | 43.5 | 3.02 | 3.02 |
| Jan 18 | 63.3 | 43.6 | 3.20 | 3.20 |
| Jan 19 | 63.4 | 43.6 | 3.38 | 3.38 |
| Jan 20 | 63.5 | 43.7 | 3.55 | 3.55 |
| Jan 21 | 63.6 | 43.8 | 3.73 | 3.73 |
| Jan 22 | 63.7 | 43.9 | 3.91 | 3.91 |
| Jan 23 | 63.8 | 44.0 | 4.08 | 4.08 |
| Jan 24 | 63.9 | 44.1 | 4.23 | 4.23 |
| Jan 25 | 64.0 | 44.2 | 4.39 | 4.39 |
| Jan 26 | 64.1 | 44.3 | 4.54 | 4.54 |
| Jan 27 | 64.2 | 44.4 | 4.69 | 4.69 |
| Jan 28 | 64.4 | 44.6 | 4.85 | 4.85 |
| Jan 29 | 64.5 | 44.7 | 5.01 | 5.01 |
| Jan 30 | 64.6 | 44.9 | 5.17 | 5.17 |
| Jan 31 | 64.8 | 45.0 | 5.32 | 5.32 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Port Arthur - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 93.9 | 80.1 | 0.01 |
| Oct 2 | 93.9 | 75.9 | 0.06 |
| Oct 3 | 89.1 | 75.9 | 0.01 |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 91.0 | 71.1 | T |
| Oct 8 | 91.9 | 72.0 | T |
| Oct 9 | 91.0 | 64.9 | T |
| Oct 10 | 87.1 | 66.0 | T |
| Oct 11 | 88.0 | 64.9 | 0.00 |
| Oct 12 | 88.0 | 71.1 | 0.05 |
| Oct 13 | 91.0 | 78.1 | 0.01 |
| Oct 14 | 89.1 | 73.0 | 0.00 |
| Oct 15 | 89.1 | 70.0 | 0.00 |
| Oct 16 | 80.1 | 61.0 | T |
| Oct 17 | – | – | – |
| Oct 18 | 75.0 | 51.1 | 0.00 |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | 82.0 | 61.0 | 0.00 |
| Oct 22 | 84.0 | 57.9 | 0.00 |
| Oct 23 | 86.0 | 53.1 | 0.00 |
| Oct 24 | 82.9 | 59.0 | T |
| Oct 25 | 81.0 | 59.0 | 0.00 |
| Oct 26 | 81.0 | 59.0 | 0.00 |
| Oct 27 | 79.0 | 60.1 | T |
| Oct 28 | 82.9 | 64.9 | 0.00 |
| Oct 29 | 82.0 | 62.1 | 0.00 |
| Oct 30 | 81.0 | 64.0 | 0.38 |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.9ºF · Oct 1
- Lowest max temperature75.0ºF · Oct 18
- Highest min temperature80.1ºF · Oct 1
- Lowest min temperature51.1ºF · Oct 18
Geo Port Arthur - Texas
Location
- Country
- United States
- State
- Texas
- County
- Jefferson
- City
- Port Arthur
- Zip Code
- 77642
- Elevation
- 0 ft
- Longitude
- -93.94
- Latitude
- 29.89
- ICAO
- –
- IATA
- –