TODAY AUG21
TEMPERATURE71
HUMIDITY87
PRESSURE29.9
WIND COND.310 11.4
  • 7957Wed
  • 8163Thu
  • 8370Fri60%40%
  • 9172Sat
  • 9371Sun
daynightWeather update from St. Charles, St. Charles County Smartt Airport at

Winfield Average Weather

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 Winfield for August is 79 degrees.
  • The lowest monthly average temperature in Winfield for December is 32 degrees.
  • The most monthly precipitation in Winfield occurs in January with 9 inches.
  • The air quality index in Winfield is 20% worse than the national average.
  • The pollution index in Winfield is 39% better than the national average.

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Compare Winfield, MO Weather To Other Cities

Winfield 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.
IndexWinfieldMissouriNational
Air quality index609750
Pollution index3,042,5302,360,5665,066,862

Winfield 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

Winfield air quality information

PollutantTotal
Arsenic0.010%
Benzene0.040%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.001%

Average monthly Winfield temperature with heat index

Winfield monthly precipitation with daily maximum

Winfield monthly snow depth with daily maximum

Winfield monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Whiteside, MO603432%
Fieldon, IL1736020%
Flint Hill, MO5386020%
Josephville, MO4246020%
Old Monroe, MO2016020%
Winfield, MO1,7156020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mechanicsville, MD1,715492%
Monteagle, TN1,7154412%
Lac du Flambeau, WI1,7153628%
Pine Mountain Club, CA1,7167958%
Choteau, MT1,7142648%
Winfield, MO1,7156020%
Source: The Winfield, 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.