TODAY MAY23
TEMPERATURE64
HUMIDITY78
PRESSURE101420
WIND COND.70 5.4
  • 8267Thu30%
  • 8460Fri70%70%
  • 8265Sat30%
  • 8462Sun70%80%
  • 765930%30%
daynightWeather update from St. Louis Lambert International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Old Jamestown for July is 80.9 degrees
  • The lowest monthly average temperature in Old Jamestown for January is 33.1 degrees
  • The most monthly precipitation in Old Jamestown occurs in April with 5.4 inches
  • The air quality index in Old Jamestown is 28% worse than the national average
  • The pollution index in Old Jamestown is 225% worse than the national average

Compare Old Jamestown, MO Weather

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      Old Jamestown 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
      January24°F45°F33°F2.4"
      February25°F48°F35°F2.2"
      March37°F61°F48°F3.6"
      April47°F72°F59°F5.4"
      May57°F80°F68°F4.6"
      June67°F89°F78°F5.2"
      July70°F92°F81°F4.2"
      August69°F91°F79°F3.6"
      September61°F84°F72°F4.3"
      October48°F72°F60°F3.4"
      November37°F60°F48°F3.4"
      December27°F47°F37°F3.5"

      Old Jamestown 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.
      IndexOld JamestownMissouriNational
      Air quality index549742
      Pollution index8,870,2301,630,2552,726,193

      Old Jamestown air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality134
      Days with moderate air quality221
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality2

      Old Jamestown air quality information

      PollutantTotal
      Arsenic0.180%
      Benzene0.060%
      Carbon Tetrachloride0.020%
      Lead0.030%
      Mercury0.120%

      Average monthly Old Jamestown temperature with heat index

      Old Jamestown monthly precipitation with daily maximum

      Old Jamestown monthly snow depth with daily maximum

      Old Jamestown monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Vinita Park, MO1,422548.0%
      Bridgeton, MO11,577548.0%
      Dellwood, MO5,010548.0%
      Hazelwood, MO25,222548.0%
      St. Ann, MO12,689548.0%
      Old Jamestown, MO19,602548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Stony Plain, AB19,599n/a 
      Affton, MO19,580548.0%
      Makakilo, HI19,5653040.0%
      Bourbonnais, IL19,6395510.0%
      Horizon City, TX19,645536.0%
      Old Jamestown, MO19,602548.0%
      Source: The Old Jamestown, 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.