TODAY DEC03
TEMPERATURE57
HUMIDITY44
PRESSURE103180
WIND COND.110 5.4
  • 5545Wed70%
  • 5634Thu
  • 4838Fri30%
  • 5445Sat30%
  • 6351Sun20%20%
daynightWeather update from Dallas / Addison Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Richardson for August is 86.7 degrees
  • The lowest monthly average temperature in Richardson for January is 47.2 degrees
  • The most monthly precipitation in Richardson occurs in October with 14.4 inches
  • The air quality index in Richardson is 21% worse than the national average
  • The pollution index in Richardson is 36% worse than the national average

Compare Richardson, TX Weather

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      Richardson 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"

      Richardson 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.
      IndexRichardsonTexasNational
      Air quality index515242
      Pollution index3,706,5402,009,3002,726,193

      Richardson air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.040%
      Carbon Tetrachloride0.010%
      Lead0.040%
      Mercury0.000%

      Average monthly Richardson temperature with heat index

      Richardson monthly precipitation with daily maximum

      Richardson monthly snow depth with daily maximum

      Richardson monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Highland Park, TX9,143512.0%
      Travis Ranch, TX6,164512.0%
      Carrollton, TX137,319512.0%
      Plano, TX288,870512.0%
      Cockrell Hill, TX4,200512.0%
      Richardson, TX118,583512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Sugar Land, TX118,563524.0%
      Evansville, IN118,4144510.0%
      Waterloo, ON118,234n/a 
      Terrebonne, QC119,135n/a 
      Cambridge, MA117,8224314.0%
      Richardson, TX118,583512.0%
      Source: The Richardson, 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.