TODAY NOV09
TEMPERATURE
HUMIDITY
PRESSURE101290
WIND COND.
  • 8268Sat
  • 8668Sun
  • 8666
  • 8368Tue
  • 8566Wed
daynightWeather update from Corpus Christi, Corpus Christi Naval Air Station/Truax Field at
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Weather Quick Facts

  • The highest monthly average temperature in Portland for August is 85.4 degrees
  • The lowest monthly average temperature in Portland for January is 57.6 degrees
  • The most monthly precipitation in Portland occurs in July with 10.7 inches
  • The air quality index in Portland is equal to the national average
  • The pollution index in Portland is 326% worse than the national average

Compare Portland, TX Weather

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      Portland 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
      January49°F68°F58°F5.5"
      February54°F72°F62°F4.7"
      March60°F76°F67°F3.3"
      April66°F82°F73°F0.7"
      May70°F86°F78°F2.9"
      June76°F91°F83°F4.8"
      July79°F92°F85°F10.7"
      August78°F94°F85°F2.5"
      September74°F91°F82°F4.5"
      October67°F85°F75°F5.5"
      November59°F78°F67°F10.6"
      December52°F70°F60°F4.0"

      Portland 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.
      IndexPortlandTexasNational
      Air quality index425242
      Pollution index11,617,0002,009,3002,726,193

      Portland air quality

      MeasurementTotal
      Days measured365
      Days with good air quality262
      Days with moderate air quality102
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.140%
      Carbon Tetrachloride0.230%
      Lead0.020%
      Mercury0.020%

      Average monthly Portland temperature with heat index

      Portland monthly precipitation with daily maximum

      Portland monthly snow depth with daily maximum

      Portland monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Falman, TX84216.0%
      Port Aransas, TX4,2034216.0%
      Loma Linda, TX1384216.0%
      Taft, TX2,9244216.0%
      Aransas Pass, TX9,2694216.0%
      Portland, TX17,8074216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Albert Lea, MN17,8041570.0%
      Amsterdam, NY17,8233726.0%
      El Dorado, AR17,8263530.0%
      Colonia, NJ17,782512.0%
      West Columbia, SC17,7824314.0%
      Portland, TX17,8074216.0%
      Source: The Portland, 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.