TODAY NOV21
TEMPERATURE
HUMIDITY
PRESSURE102640
WIND COND. 7.6
  • 7244
  • 7345Fri
  • 7860Sat
  • 8362Sun
  • 8353Mon
daynightWeather update from Austin City, Austin Camp Mabry at
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Weather Quick Facts

  • The highest monthly average temperature in Saint Johns for August is 86.1 degrees
  • The lowest monthly average temperature in Saint Johns for January is 51.6 degrees
  • The most monthly precipitation in Saint Johns occurs in May with 5.9 inches
  • The air quality index in Saint Johns is 5% worse than the national average
  • The pollution index in Saint Johns is 74% better than the national average

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      Saint Johns 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
      January42°F65°F52°F3.0"
      February46°F69°F56°F1.5"
      March53°F76°F63°F4.0"
      April60°F82°F70°F2.9"
      May66°F88°F76°F5.9"
      June73°F95°F83°F3.4"
      July75°F97°F85°F3.0"
      August76°F99°F86°F2.2"
      September71°F93°F80°F4.5"
      October61°F84°F71°F3.9"
      November52°F74°F62°F2.4"
      December44°F65°F53°F2.5"

      Saint Johns 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.
      IndexSaint JohnsAustinTexas
      Air quality index444452
      Pollution index713,830713,8302,009,300

      Saint Johns air quality

      MeasurementTotal
      Days measured365
      Days with good air quality249
      Days with moderate air quality114
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Saint Johns temperature with heat index

      Saint Johns monthly precipitation with daily maximum

      Saint Johns monthly snow depth with daily maximum

      Saint Johns monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Garfield, TX2,5064412.0%
      Manor, TX11,6434412.0%
      Sunset Valley, TX5744412.0%
      Cedar Park, TX77,1814412.0%
      Pflugerville, TX63,6104412.0%
      Austin, TX965,8724412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Jacksonville, FL902,4884314.0%
      San Jose, CA1,029,4094314.0%
      Fort Worth, TX892,221512.0%
      Columbus, OH889,079468.0%
      Edmonton, AB1,053,392n/a 
      Austin, TX965,8724412.0%
      Source: The Saint Johns, Austin, 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.