TODAY MAY16
TEMPERATURE59
HUMIDITY82
PRESSURE30.15
WIND COND.160 13
  • 7357Mon20%
  • 6960Tue30%50%
  • 7562Wed40%50%
  • 7764Thu30%60%
  • 7864Fri30%40%
daynightWeather update from Decorah at

Key findings

  • The highest monthly average temperature in Spillville for July is 73 degrees
  • The lowest monthly average temperature in Spillville for January is 19.3 degrees
  • The most monthly precipitation in Spillville occurs in June with 4.3 inches
  • The air quality index in Spillville is 22% better than the national average
  • The pollution index in Spillville is 90% better than the national average

Compare Spillville, IA Weather

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      Spillville 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
      January13°F27°F19°F0.5"
      February14°F29°F21°F0.4"
      March29°F45°F36°F1.5"
      April40°F59°F48°F3.4"
      May50°F70°F60°F2.9"
      June61°F79°F69°F4.3"
      July65°F82°F73°F3.9"
      August62°F79°F70°F4.0"
      September54°F73°F63°F3.4"
      October43°F61°F51°F3.0"
      November31°F47°F38°F1.0"
      December18°F31°F24°F0.9"

      Spillville 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.
      IndexSpillvilleIowaNational
      Air quality index393950
      Pollution index530,4841,643,8365,066,862

      Spillville 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

      Spillville air quality information

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

      Average monthly Spillville temperature with heat index

      Spillville monthly precipitation with daily maximum

      Spillville monthly snow depth with daily maximum

      Spillville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Decorah, IA7,9853530%
      Castalia, IA1883530%
      Ridgeway, IA2853530%
      Cresco, IA3,8393628%
      Waucoma, IA2333922%
      Spillville, IA4333922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Keytesville, MO4333824%
      Hixton, WI4333432%
      Lostant, IL4330100%
      Klickitat, WA4332354%
      Birchwood, WI4333432%
      Spillville, IA4333922%
      Source: The Spillville, 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.