TODAY MAY15
TEMPERATURE60
HUMIDITY86
PRESSURE30.09
WIND COND.180 11.2
  • 7058Sun60%
  • 7458Mon40%40%
  • 7460Tue30%40%
  • 7763Wed40%70%
  • 7865Thu70%70%
daynightWeather update from Des Moines, Des Moines International Airport at

Key findings

  • The highest monthly average temperature in Norwalk for July is 77.4 degrees
  • The lowest monthly average temperature in Norwalk for January is 23.5 degrees
  • The most monthly precipitation in Norwalk occurs in June with 6.5 inches
  • The air quality index in Norwalk is 22% better than the national average
  • The pollution index in Norwalk is 84% worse than the national average

Compare Norwalk, IA Weather

      vs
      How would you rate the weather in Norwalk?
      Write a review to give others more information about this area.
      How would you rate the air quality in Norwalk?
      Write a review to give others more information about this area.
      See all Norwalk poll results

      Norwalk 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
      January14°F35°F23°F0.9"
      February17°F39°F26°F1.2"
      March30°F54°F41°F2.2"
      April41°F67°F53°F4.9"
      May51°F76°F63°F4.9"
      June62°F86°F74°F6.5"
      July66°F89°F77°F4.2"
      August64°F87°F75°F5.1"
      September56°F81°F68°F3.7"
      October43°F68°F55°F3.2"
      November31°F54°F42°F1.8"
      December18°F38°F27°F2.1"

      Norwalk 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.
      IndexNorwalkIowaNational
      Air quality index393950
      Pollution index9,310,1601,643,8365,066,862

      Norwalk air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality306
      Days with moderate air quality59
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Norwalk air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.110%
      Carbon Tetrachloride0.080%
      Lead0.030%
      Mercury0.010%

      Average monthly Norwalk temperature with heat index

      Norwalk monthly precipitation with daily maximum

      Norwalk monthly snow depth with daily maximum

      Norwalk monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Des Moines, IA212,8593922%
      Waukee, IA16,9553922%
      St. Marys, IA2103922%
      Dallas Center, IA1,8513922%
      Indianola, IA15,3433922%
      Norwalk, IA9,9443922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Jefferson, GA9,9464412%
      Fairfield, IA9,9422942%
      Brownsville, TN9,9382746%
      Elkhorn, WI9,9313726%
      Essex Junction, VT9,9223726%
      Norwalk, IA9,9443922%
      Source: The Norwalk, 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.