TODAY SEP26
TEMPERATURE74
HUMIDITY74
PRESSURE29.95
WIND COND.330 10.3
  • 6946Wed
  • 7451Thu
  • 7549Fri
  • 7154Sat
  • 7860Sun
daynightWeather update from St. Charles, St. Charles County Smartt Airport at
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Silex 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
January26°F41°F33°F9.0"
February25°F43°F33°F4.8"
March36°F60°F47°F3.9"
April44°F68°F55°F4.3"
May56°F80°F67°F4.3"
June65°F87°F76°F5.8"
July66°F89°F77°F3.9"
August69°F91°F79°F4.6"
September60°F85°F71°F4.9"
October48°F71°F59°F3.7"
November36°F58°F46°F7.6"
December25°F40°F32°F2.5"

Did you know?

  • The highest monthly average temperature in Silex for August is 79 degrees.
  • The lowest monthly average temperature in Silex for December is 32 degrees.
  • The most monthly precipitation in Silex occurs in January with 9 inches.
  • The air quality index in Silex is 20% worse than the national average.
  • The pollution index in Silex is 51% better than the national average.

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Compare Silex, MO Weather To Other Cities

Silex 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.
IndexSilexMissouriNational
Air quality index609750
Pollution index2,458,1802,360,5665,066,862

Silex 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

Silex air quality information

PollutantTotal
Arsenic0.002%
Benzene0.020%
Carbon Tetrachloride0.001%
Lead0.120%
Mercury0.330%

Average monthly Silex temperature with heat index

Silex monthly precipitation with daily maximum

Silex monthly snow depth with daily maximum

Silex monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Ashley, MO233432%
Eolia, MO5733432%
Paynesville, MO683432%
Whiteside, MO603432%
St. Clement, MO933432%
Silex, MO686020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Loyal, OK68476%
Bison, OK68476%
Slater, WY684020%
Elgin, OH683040%
Datto, AR683628%
Silex, MO686020%
Source: The Silex, 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.