TODAY MAR19
TEMPERATURE42
HUMIDITY
PRESSURE102540
WIND COND.150 5.4
  • 6949Tue
  • 7156Wed
  • 6754Thu80%70%
  • 7050Fri
  • 7256Sat
daynightWeather update from Dallas / Addison Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Plano for August is 86.7 degrees
  • The lowest monthly average temperature in Plano for January is 47.2 degrees
  • The most monthly precipitation in Plano occurs in October with 14.4 inches
  • The air quality index in Plano is 21% worse than the national average
  • The pollution index in Plano is 226% worse than the national average

Compare Plano, TX Weather

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      Plano 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
      January39°F58°F47°F7.1"
      February42°F62°F51°F2.6"
      March51°F70°F60°F7.1"
      April58°F77°F67°F9.9"
      May66°F84°F74°F11.4"
      June75°F92°F83°F5.8"
      July77°F95°F86°F2.0"
      August78°F96°F87°F1.4"
      September71°F89°F80°F0.5"
      October60°F79°F69°F14.4"
      November50°F68°F58°F8.2"
      December40°F58°F48°F6.1"

      Plano 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.
      IndexPlanoTexasNational
      Air quality index515242
      Pollution index8,884,1902,009,3002,726,193

      Plano air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality181
      Days with moderate air quality155
      Days w/ poor A.Q. for sensitive groups28
      Days with unhealthy air quality1

      Plano air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.260%
      Mercury0.020%

      Average monthly Plano temperature with heat index

      Plano monthly precipitation with daily maximum

      Plano monthly snow depth with daily maximum

      Plano monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Irving, TX240,475512.0%
      Garland, TX238,622512.0%
      Richardson, TX118,583512.0%
      Allen, TX104,040512.0%
      Hackberry, TX2,426512.0%
      Plano, TX288,870512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Lincoln, NE286,3883138.0%
      Anchorage, AK292,0903138.0%
      Orlando, FL284,8173922.0%
      Gatineau, QC293,695n/a 
      Greensboro, NC294,3954314.0%
      Plano, TX288,870512.0%
      Source: The Plano, 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.