TODAY NOV25
TEMPERATURE36
HUMIDITY62
PRESSURE101970
WIND COND.310 35.3
  • 3827Tue
  • 4019Wed
  • 2913
  • 2512Fri
  • 217Sat
daynightWeather update from Marshalltown, Marshalltown Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Grundy Center for July is 73.9 degrees
  • The lowest monthly average temperature in Grundy Center for December is 19.6 degrees
  • The most monthly precipitation in Grundy Center occurs in May with 8 inches
  • The air quality index in Grundy Center is 7% better than the national average
  • The pollution index in Grundy Center is 85% better than the national average

Compare Grundy Center, IA Weather

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      Grundy Center 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°F28°F20°F1.5"
      February14°F30°F22°F2.6"
      March29°F50°F38°F5.4"
      April38°F62°F50°F7.2"
      May51°F73°F61°F8.0"
      June62°F83°F72°F7.9"
      July63°F85°F74°F5.1"
      August62°F82°F72°F6.6"
      September55°F79°F66°F5.4"
      October44°F65°F54°F5.7"
      November28°F49°F38°F2.2"
      December13°F26°F20°F1.8"

      Grundy Center 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.
      IndexGrundy CenterIowaNational
      Air quality index393942
      Pollution index416,1141,154,5352,726,193

      Grundy Center air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly Grundy Center temperature with heat index

      Grundy Center monthly precipitation with daily maximum

      Grundy Center monthly snow depth with daily maximum

      Grundy Center monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Union, IA4123726.0%
      Liscomb, IA3813726.0%
      Whitten, IA1373726.0%
      Conrad, IA1,2243922.0%
      Ackley, IA1,7883922.0%
      Grundy Center, IA2,6713922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fairmount, IN2,6713530.0%
      Lisbon, OH2,671688.0%
      Morton, PA2,671512.0%
      Lake Wazeecha, WI2,6713432.0%
      Saint-Mathieu-de-Beloeil, QC2,671n/a 
      Grundy Center, IA2,6713922.0%
      Source: The Grundy Center, 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.