TODAY APR18
TEMPERATURE70
HUMIDITY88
PRESSURE101290
WIND COND.160 13
  • 6556Fri30%
  • 6049Sat90%90%
  • 6247Sun60%
  • 7055Mon
  • 7761Tue
daynightWeather update from Sherman/Denison, Grayson County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Sherman for August is 84.4 degrees
  • The lowest monthly average temperature in Sherman for January is 43.5 degrees
  • The most monthly precipitation in Sherman occurs in May with 5.6 inches
  • The air quality index in Sherman is 672% worse than the national average
  • The pollution index in Sherman is 226% worse than the national average

Compare Sherman, TX Weather

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      Sherman 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
      January34°F56°F44°F2.5"
      February38°F60°F47°F2.1"
      March47°F69°F56°F2.9"
      April54°F76°F64°F4.7"
      May61°F82°F71°F5.6"
      June71°F91°F81°F4.5"
      July74°F95°F84°F3.1"
      August74°F96°F84°F3.1"
      September67°F89°F77°F2.9"
      October56°F79°F66°F3.1"
      November46°F67°F56°F2.9"
      December37°F56°F45°F2.6"

      Sherman 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.
      IndexShermanTexasNational
      Air quality index3255242
      Pollution index8,884,1902,009,3002,726,193

      Sherman air quality information

      MeasurementTotal
      Days measured138
      Days with good air quality120
      Days with moderate air quality17
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality

      Sherman air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.260%
      Mercury0.020%

      Average monthly Sherman temperature with heat index

      Sherman monthly precipitation with daily maximum

      Sherman monthly snow depth with daily maximum

      Sherman monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Denison, TX24,851325550.0%
      Tom Bean, TX1,116325550.0%
      Bells, TX1,824325550.0%
      Southmayd, TX1,510325550.0%
      Pottsboro, TX2,418325550.0%
      Sherman, TX43,239325550.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ormond Beach, FL43,2453138.0%
      Rouyn-Noranda, QC43,276n/a 
      Salem, MA43,3504314.0%
      Channelview, TX43,378524.0%
      Moorhead, MN43,4093334.0%
      Sherman, TX43,239325550.0%
      Source: The Sherman, 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.