TODAY MAR28
TEMPERATURE29
HUMIDITY63
PRESSURE102030
WIND COND.350 7.6
  • 5431Fri30%
  • 4831Sat
  • 5135Sun30%60%
  • 4729Mon70%60%
  • 4928Tue
daynightWeather update from Mason City Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Plymouth for July is 72.5 degrees
  • The lowest monthly average temperature in Plymouth for January is 16.7 degrees
  • The most monthly precipitation in Plymouth occurs in June with 5.4 inches
  • The air quality index in Plymouth is 64% better than the national average
  • The pollution index in Plymouth is 47% better than the national average

Compare Plymouth, IA Weather

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      Plymouth 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°F25°F17°F0.7"
      February11°F29°F20°F1.1"
      March25°F44°F34°F2.2"
      April36°F60°F47°F5.1"
      May48°F71°F59°F5.0"
      June58°F81°F69°F5.4"
      July61°F84°F72°F4.2"
      August59°F82°F70°F4.0"
      September51°F76°F62°F4.3"
      October38°F62°F49°F2.7"
      November26°F47°F36°F1.5"
      December13°F29°F21°F1.4"

      Plymouth 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.
      IndexPlymouthIowaNational
      Air quality index153942
      Pollution index1,444,3801,154,5352,726,193

      Plymouth air quality information

      MeasurementTotal
      Days measured118
      Days with good air quality118
      Days with moderate air quality0
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Plymouth air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.040%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.001%

      Average monthly Plymouth temperature with heat index

      Plymouth monthly precipitation with daily maximum

      Plymouth monthly snow depth with daily maximum

      Plymouth monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bolan, IA101570.0%
      Manly, IA1,4801570.0%
      Rock Falls, IA1611570.0%
      Nora Springs, IA1,6481570.0%
      Burchinal, IA201570.0%
      Plymouth, IA4661570.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ray, AL4663824.0%
      Reyno, AR4662648.0%
      Menlo, IA4663922.0%
      Parker, ID4664314.0%
      Brewer, MO466548.0%
      Plymouth, IA4661570.0%
      Source: The Plymouth, 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.