TODAY APR25
TEMPERATURE68
HUMIDITY40
PRESSURE102000
WIND COND.360 14.8
  • 8067Fri30%
  • 8165Sat
  • 8365Sun
  • 8163Mon70%
  • 8061Tue70%30%
daynightWeather update from Portland Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Shackle Island for July is 79.9 degrees
  • The lowest monthly average temperature in Shackle Island for January is 39.3 degrees
  • The most monthly precipitation in Shackle Island occurs in April with 5.6 inches
  • The air quality index in Shackle Island is 7% worse than the national average
  • The pollution index in Shackle Island is 35% better than the national average

Compare Shackle Island, TN Weather

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      Shackle Island 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
      January29°F52°F39°F4.2"
      February31°F54°F42°F3.4"
      March39°F65°F52°F4.1"
      April49°F75°F62°F5.6"
      May56°F82°F69°F5.1"
      June66°F90°F78°F3.9"
      July69°F92°F80°F5.0"
      August69°F92°F79°F4.5"
      September61°F86°F73°F4.0"
      October49°F75°F61°F4.0"
      November38°F64°F50°F3.8"
      December33°F54°F43°F5.1"

      Shackle Island 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.
      IndexShackle IslandTennesseeNational
      Air quality index457642
      Pollution index1,764,1002,454,9162,726,193

      Shackle Island air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality229
      Days with moderate air quality135
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Shackle Island air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.030%
      Mercury0.010%

      Average monthly Shackle Island temperature with heat index

      Shackle Island monthly precipitation with daily maximum

      Shackle Island monthly snow depth with daily maximum

      Shackle Island monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Portland, TN12,9284314.0%
      Cottontown, TN3564510.0%
      Cross Plains, TN1,9004510.0%
      Nashville, TN667,0704510.0%
      White House, TN12,2584510.0%
      Shackle Island, TN4,0104510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ovilla, TX4,010512.0%
      Esparto, CA4,0093530.0%
      Nassau Bay, TX4,009524.0%
      Gardnertown, NY4,0113628.0%
      Greencastle, PA4,0084020.0%
      Shackle Island, TN4,0104510.0%
      Source: The Shackle Island, TN 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.