TODAY APR08
TEMPERATURE88
HUMIDITY29
PRESSURE29.56
WIND COND.200 8.1
  • 5933Thu
  • 5640Fri
  • 5948Sat30%30%
  • 6539Sun80%60%
  • 5235Mon30%30%
daynightWeather update from St. Louis Downtown Airport at
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Herculaneum 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
January28°F43°F35°F11.3"
February26°F43°F33°F3.1"
March39°F61°F49°F5.3"
April45°F68°F56°F5.9"
May56°F80°F68°F4.4"
June65°F88°F76°F4.0"
July67°F88°F77°F9.1"
August69°F91°F79°F7.4"
September60°F84°F71°F8.8"
October48°F72°F59°F4.0"
November37°F59°F47°F8.5"
December27°F42°F34°F3.1"

Did you know?

  • The highest monthly average temperature in Herculaneum for August is 79 degrees.
  • The lowest monthly average temperature in Herculaneum for February is 33 degrees.
  • The most monthly precipitation in Herculaneum occurs in January with 11.3 inches.
  • The air quality index in Herculaneum is 21% worse than the national average.
  • The pollution index in Herculaneum is 85% better than the national average.

Compare Herculaneum, MO Weather To Other Cities

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      Herculaneum 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.
      IndexHerculaneumMissouriNational
      Air quality index609750
      Pollution index753,4732,360,5665,066,862

      Herculaneum air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality99
      Days with moderate air quality231
      Days w/ poor A.Q. for sensitive groups33
      Days with unhealthy air quality2

      Herculaneum air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.020%
      Mercury0.020%

      Average monthly Herculaneum temperature with heat index

      Herculaneum monthly precipitation with daily maximum

      Herculaneum monthly snow depth with daily maximum

      Herculaneum monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Columbia, IL10,1936020%
      Waterloo, IL10,1976020%
      Cedar Hill, MO1,8236020%
      Festus, MO11,9296020%
      Horine, MO1,1706020%
      Herculaneum, MO3,8316020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Lancaster, KY3,8313334%
      Gouverneur, NY3,8313138%
      Hugoton, KS3,831688%
      Green Oaks, IL3,8323530%
      West Menlo Park, CA3,830484%
      Herculaneum, MO3,8316020%
      Source: The Herculaneum, MO 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.