TODAY MAR03
TEMPERATURE61
HUMIDITY63
PRESSURE100070
WIND COND.
  • 5532Mon50%30%
  • 5730Tue
  • 5433Wed20%
  • 5234Thu50%
  • 4528Fri60%40%
daynightWeather update from Oelwein Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Sumner for July is 71.6 degrees
  • The lowest monthly average temperature in Sumner for January is 18.9 degrees
  • The most monthly precipitation in Sumner occurs in June with 5.1 inches
  • The air quality index in Sumner is 7% better than the national average
  • The pollution index in Sumner is 81% better than the national average

Compare Sumner, IA Weather

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      Sumner 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
      January12°F27°F19°F0.7"
      February13°F29°F21°F0.7"
      March29°F45°F36°F1.7"
      April39°F60°F48°F2.8"
      May50°F71°F60°F2.4"
      June60°F80°F70°F5.1"
      July62°F82°F72°F2.5"
      August60°F79°F69°F2.3"
      September53°F75°F63°F3.0"
      October42°F61°F50°F2.8"
      November29°F47°F37°F1.1"
      December17°F31°F24°F1.8"

      Sumner 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.
      IndexSumnerIowaNational
      Air quality index393942
      Pollution index530,4841,154,5352,726,193

      Sumner air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality286
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Sumner air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Sumner temperature with heat index

      Sumner monthly precipitation with daily maximum

      Sumner monthly snow depth with daily maximum

      Sumner monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fayette, IA1,1413922.0%
      Waucoma, IA3113922.0%
      Westgate, IA2143922.0%
      Frederika, IA3153922.0%
      Hawkeye, IA4883922.0%
      Sumner, IA2,2243922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Easton, CA2,2246020.0%
      Ely, IA2,2243922.0%
      Spencer, IN2,2244216.0%
      Granby, MO2,2243726.0%
      Wesson, MS2,2244412.0%
      Sumner, IA2,2243922.0%
      Source: The Sumner, 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.