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Key findings

  • The highest monthly average temperature in Clear Lake for July is 72.5 degrees
  • The lowest monthly average temperature in Clear Lake for January is 16.7 degrees
  • The most monthly precipitation in Clear Lake occurs in June with 5.4 inches
  • The air quality index in Clear Lake is 70% better than the national average
  • The pollution index in Clear Lake is 71% better than the national average

Compare Clear Lake, IA Weather

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      Clear Lake 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"

      Clear Lake 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.
      IndexClear LakeIowaNational
      Air quality index153950
      Pollution index1,444,3801,643,8365,066,862

      Clear Lake 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

      Clear Lake air quality information

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

      Average monthly Clear Lake temperature with heat index

      Clear Lake monthly precipitation with daily maximum

      Clear Lake monthly snow depth with daily maximum

      Clear Lake monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Fertile, IA3461570%
      Hanlontown, IA2111570%
      Swaledale, IA1811570%
      Plymouth, IA3441570%
      Rockwell, IA1,1001570%
      Clear Lake, IA7,6441570%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Gettysburg, PA7,6434216%
      Ivins, UT7,6464412%
      Summit, WA7,6463040%
      Laughlin, NV7,6411374%
      Burton, SC7,6482942%
      Clear Lake, IA7,6441570%
      Source: The Clear Lake, 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.