TODAY NOV25
TEMPERATURE42
HUMIDITY76
PRESSURE100950
WIND COND.20 13
  • 3115Mon
  • 3820Tue
  • 3215Wed
  • 277
  • 239Fri
daynightWeather update from Spencer Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Spencer for July is 74.5 degrees
  • The lowest monthly average temperature in Spencer for December is 17.2 degrees
  • The most monthly precipitation in Spencer occurs in August with 7.9 inches
  • The air quality index in Spencer is 17% better than the national average
  • The pollution index in Spencer is 43% better than the national average

Compare Spencer, IA Weather

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      Spencer 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
      January9°F26°F17°F1.0"
      February13°F30°F21°F1.0"
      March27°F48°F36°F6.5"
      April37°F62°F49°F6.0"
      May51°F73°F61°F5.9"
      June61°F84°F72°F4.4"
      July63°F87°F75°F7.6"
      August61°F83°F71°F7.9"
      September54°F79°F65°F6.8"
      October41°F65°F52°F3.1"
      November25°F47°F35°F3.7"
      December9°F25°F17°F1.0"

      Spencer 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.
      IndexSpencerIowaNational
      Air quality index353942
      Pollution index1,563,5601,154,5352,726,193

      Spencer air quality

      MeasurementTotal
      Days measured364
      Days with good air quality322
      Days with moderate air quality42
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly Spencer temperature with heat index

      Spencer monthly precipitation with daily maximum

      Spencer monthly snow depth with daily maximum

      Spencer monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Ruthven, IA7711570.0%
      Terril, IA3433236.0%
      Royal, IA5053530.0%
      Rossie, IA833530.0%
      Dickens, IA2063530.0%
      Spencer, IA11,0383530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Franklin Lakes, NJ11,044512.0%
      Ontario, OR11,0313628.0%
      Middle Island, NY11,0304314.0%
      Munhall, PA11,0495612.0%
      Holbrook, MA11,0514314.0%
      Spencer, IA11,0383530.0%
      Source: The Spencer, 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.