TODAY APR18
TEMPERATURE83
HUMIDITY49
PRESSURE100980
WIND COND.170 24.1
  • 6242Fri
  • 6037Sat
  • 6037Sun
  • 6850Mon
  • 6946Tue
daynightWeather update from Rolla / Vichy, Rolla National Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. James for July is 77.5 degrees
  • The lowest monthly average temperature in St. James for January is 31.7 degrees
  • The most monthly precipitation in St. James occurs in May with 5.8 inches
  • The air quality index in St. James is 7% better than the national average
  • The pollution index in St. James is 87% better than the national average

Compare St. James, MO Weather

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      St. James 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
      January22°F44°F32°F1.3"
      February26°F47°F35°F1.5"
      March36°F60°F46°F3.3"
      April46°F70°F57°F5.4"
      May54°F76°F64°F5.8"
      June64°F85°F74°F4.2"
      July67°F89°F77°F4.9"
      August65°F87°F75°F5.0"
      September58°F80°F68°F3.1"
      October47°F70°F57°F2.6"
      November36°F57°F46°F3.3"
      December28°F46°F36°F2.9"

      St. James 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.
      IndexSt. JamesMissouriNational
      Air quality index399742
      Pollution index344,9821,630,2552,726,193

      St. James air quality information

      MeasurementTotal
      Days measured245
      Days with good air quality238
      Days with moderate air quality7
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      St. James air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly St. James temperature with heat index

      St. James monthly precipitation with daily maximum

      St. James monthly snow depth with daily maximum

      St. James monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Cuba, MO3,3053922.0%
      Doolittle, MO4893922.0%
      Rolla, MO20,2733922.0%
      Steelville, MO1,4853922.0%
      St. James, MO4,0533922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      St. Joseph, IL4,0534216.0%
      Cannon Falls, MN4,0533726.0%
      Northern Lights County, AB4,053n/a 
      Mount Olive, AL4,052536.0%
      Singac, NJ4,054512.0%
      St. James, MO4,0533922.0%
      Source: The St. James, 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.