TODAY NOV21
TEMPERATURE69
HUMIDITY16
PRESSURE102570
WIND COND.50 5.4
  • 7345Fri
  • 7757Sat
  • 8365Sun
  • 8560Mon
  • 7961Tue
daynightWeather update from Houston, Sugar Land Municipal / Hull Field Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Katy for August is 83.8 degrees
  • The lowest monthly average temperature in Katy for January is 53.4 degrees
  • The most monthly precipitation in Katy occurs in August with 6.9 inches
  • The air quality index in Katy is 24% worse than the national average
  • The pollution index in Katy is 54% better than the national average

Compare Katy, TX Weather

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      Katy 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
      January44°F65°F53°F3.7"
      February48°F69°F57°F2.3"
      March54°F75°F64°F3.5"
      April61°F81°F70°F4.7"
      May68°F87°F76°F6.5"
      June73°F93°F82°F3.8"
      July75°F94°F83°F5.2"
      August75°F95°F84°F6.9"
      September71°F90°F79°F3.5"
      October61°F84°F71°F4.6"
      November53°F75°F63°F2.5"
      December47°F67°F56°F3.1"

      Katy 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.
      IndexKatyTexasNational
      Air quality index525242
      Pollution index1,253,7102,009,3002,726,193

      Katy air quality

      MeasurementTotal
      Days measured365
      Days with good air quality171
      Days with moderate air quality163
      Days w/ poor A.Q. for sensitive groups26
      Days with unhealthy air quality4

      Air quality details

      PollutantTotal
      Arsenic0.003%
      Benzene0.040%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.000%

      Average monthly Katy temperature with heat index

      Katy monthly precipitation with daily maximum

      Katy monthly snow depth with daily maximum

      Katy monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Weston Lakes, TX3,846524.0%
      Meadows Place, TX4,899524.0%
      Richmond, TX12,592524.0%
      Orchard, TX166524.0%
      Cinco Ranch, TX17,588524.0%
      Katy, TX20,296524.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Libertyville, IL20,3003922.0%
      Ashland, OH20,3044118.0%
      Bayou Cane, LA20,3074118.0%
      Warrensburg, MO20,313476.0%
      Rolla, MO20,2733922.0%
      Katy, TX20,296524.0%
      Source: The Katy, 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.