TODAY JUN04
TEMPERATURE90
HUMIDITY27
PRESSURE29.74
WIND COND.270 4.7
  • 8157Fri30%
  • 8363Sat
  • 8667Sun
  • 9167Mon
  • 8358Tue30%50%
daynightWeather update from Mason City, Mason City Municipal Airport at
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Thornton 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"

Did you know?

  • The highest monthly average temperature in Thornton for July is 72 degrees.
  • The lowest monthly average temperature in Thornton for January is 17 degrees.
  • The most monthly precipitation in Thornton occurs in June with 5.4 inches.
  • The air quality index in Thornton is 64% better than the national average.
  • The pollution index in Thornton is 80% better than the national average.

Compare Thornton, IA Weather To Other Cities

      vs

      Thornton 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.
      IndexThorntonIowaNational
      Air quality index183950
      Pollution index1,013,9601,643,8365,066,862

      Thornton air quality information

      MeasurementTotal
      Days measured334
      Days with good air quality332
      Days with moderate air quality2
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Thornton air quality information

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

      Average monthly Thornton temperature with heat index

      Thornton monthly precipitation with daily maximum

      Thornton monthly snow depth with daily maximum

      Thornton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Belmond, IA2,6861864%
      Coulter, IA2141864%
      Hansell, IA931864%
      Meservey, IA1771864%
      Sheffield, IA1,2831864%
      Thornton, IA4821864%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Pillager, MN4822942%
      Center Ridge, AR482476%
      Washburn, MO4823922%
      Lake Ivanhoe, WI4823628%
      Mammoth, PA4823236%
      Thornton, IA4821864%
      Source: The Thornton, 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.