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Weather Quick Facts

  • The highest monthly average temperature in Port Arthur for August is 82.7 degrees
  • The lowest monthly average temperature in Port Arthur for January is 53.1 degrees
  • The most monthly precipitation in Port Arthur occurs in July with 8.6 inches
  • The air quality index in Port Arthur is 7% worse than the national average
  • The pollution index in Port Arthur is 17% better than the national average

Compare Port Arthur, TX Weather

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      Port Arthur Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January42°F66°F53°F4.2"
      February46°F69°F56°F3.1"
      March52°F75°F63°F4.2"
      April58°F81°F69°F4.2"
      May65°F86°F76°F4.7"
      June73°F92°F81°F4.9"
      July74°F93°F82°F8.6"
      August74°F94°F83°F7.6"
      September70°F90°F79°F6.8"
      October59°F84°F71°F5.3"
      November50°F75°F62°F4.1"
      December45°F68°F55°F4.9"

      Port Arthur air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexPort ArthurTexasNational
      Air quality index455242
      Pollution index2,270,0202,009,3002,726,193

      Port Arthur air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality234
      Days with moderate air quality122
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality1

      Port Arthur air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.030%
      Carbon Tetrachloride0.001%
      Lead0.001%
      Mercury0.000%

      Average monthly Port Arthur temperature with heat index

      Port Arthur monthly precipitation with daily maximum

      Port Arthur monthly snow depth with daily maximum

      Port Arthur monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bridge City, TX7,9644510.0%
      Orange, TX19,1284510.0%
      Central Gardens, TX3,9344510.0%
      Port Neches, TX12,7944510.0%
      Taylor Landing, TX2284510.0%
      Port Arthur, TX54,9134510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Hanford, CA54,9125612.0%
      Aloha, OR54,9083824.0%
      Paramount, CA54,9417244.0%
      West Haven, CT54,9724118.0%
      Shoreline, WA55,0214510.0%
      Port Arthur, TX54,9134510.0%
      Source: The Port Arthur, TX weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.