TODAY NOV18
TEMPERATURE64
HUMIDITY84
PRESSURE30.15
WIND COND.80 4.7
  • 5245Mon40%30%
  • 6346Tue
  • 6049Wed40%40%
  • 6351
  • 7153Fri
daynightWeather update from Houston, Sugar Land Municipal / Hull Field Airport at

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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"

Did you know?

  • The highest monthly average temperature in Katy for August is 84 degrees.
  • The lowest monthly average temperature in Katy for January is 53 degrees.
  • The most monthly precipitation in Katy occurs in August with 6.9 inches.
  • The air quality index in Katy is 4% worse than the national average.
  • The pollution index in Katy is 75% better than the national average.

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Compare Katy, TX Weather To Other Cities

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 index525250
Pollution index1,253,7104,642,9165,066,862

Katy air quality information

MeasurementTotal
Days measured365
Days with good air quality171
Days with moderate air quality175
Days w/ poor A.Q. for sensitive groups18
Days with unhealthy air quality1

Katy air quality information

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

City, StatePopulationAir Quality IndexNational Avg.
Brazos Country, TX639524%
Four Corners, TX13,385524%
New Territory, TX15,843524%
Richmond, TX11,939524%
Weston Lakes, TX3,069524%
Katy, TX16,632524%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Easton, MD16,6373726%
Terrell, TX16,626548%
Phoenixville, PA16,6385714%
Danville, KY16,6453334%
Springfield, TN16,6504510%
Katy, TX16,632524%
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.