TODAY MAR28
TEMPERATURE73
HUMIDITY33
PRESSURE101930
WIND COND.180 11.2
  • 7660Fri
  • 8064Sat
  • 8067Sun
  • 8156Mon20%40%
  • 6748Tue40%
daynightWeather update from Dallas / Addison Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Lewisville for August is 86.7 degrees
  • The lowest monthly average temperature in Lewisville for January is 47.2 degrees
  • The most monthly precipitation in Lewisville occurs in October with 14.4 inches
  • The air quality index in Lewisville is 21% worse than the national average
  • The pollution index in Lewisville is 49% better than the national average

Compare Lewisville, TX Weather

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      Lewisville 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"

      Lewisville 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.
      IndexLewisvilleTexasNational
      Air quality index515242
      Pollution index1,399,3102,009,3002,726,193

      Lewisville 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

      Lewisville air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.002%

      Average monthly Lewisville temperature with heat index

      Lewisville monthly precipitation with daily maximum

      Lewisville monthly snow depth with daily maximum

      Lewisville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Highland Park, TX9,143512.0%
      Argyle, TX4,278512.0%
      Corral City, TX14512.0%
      Highland Village, TX16,701512.0%
      Roanoke, TX8,810512.0%
      Lewisville, TX107,740512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Meridian, ID107,7873628.0%
      Waterbury, CT107,8414118.0%
      Red Deer, AB107,873n/a 
      Hillsboro, OR108,0263824.0%
      Greeley, CO107,4454510.0%
      Lewisville, TX107,740512.0%
      Source: The Lewisville, 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.