TODAY APR12
TEMPERATURE56
HUMIDITY51
PRESSURE101730
WIND COND.330 31.7
  • 7857Sat
  • 8252Sun
  • 8263Mon60%
  • 7752Tue90%80%
  • 7248Wed30%
daynightWeather update from Ottumwa Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Webster for July is 75 degrees
  • The lowest monthly average temperature in Webster for January is 24.4 degrees
  • The most monthly precipitation in Webster occurs in July with 7.8 inches
  • The air quality index in Webster is 17% better than the national average
  • The pollution index in Webster is 79% better than the national average

Compare Webster, IA Weather

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      Webster 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
      January17°F34°F24°F1.9"
      February17°F34°F25°F2.4"
      March31°F52°F40°F3.0"
      April41°F65°F52°F4.3"
      May53°F75°F63°F6.0"
      June62°F84°F72°F4.4"
      July65°F86°F75°F7.8"
      August63°F83°F72°F4.4"
      September54°F78°F65°F5.3"
      October44°F66°F53°F5.8"
      November32°F52°F41°F3.9"
      December21°F37°F28°F4.0"

      Webster 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.
      IndexWebsterIowaNational
      Air quality index353942
      Pollution index577,8381,154,5352,726,193

      Webster air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality278
      Days with moderate air quality86
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Webster air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.090%
      Mercury0.000%

      Average monthly Webster temperature with heat index

      Webster monthly precipitation with daily maximum

      Webster monthly snow depth with daily maximum

      Webster monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Delta, IA3383530.0%
      North English, IA9573530.0%
      Harper, IA963530.0%
      Kinross, IA673530.0%
      Deep River, IA2803530.0%
      Webster, IA1703530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      White Mountain, AK1703824.0%
      Palominas, AZ1704510.0%
      Santa Claus, GA1702648.0%
      Haverhill, IA1703726.0%
      Concord, IL1704020.0%
      Webster, IA1703530.0%
      Source: The Webster, IA 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.