TODAY FEB26
TEMPERATURE23
HUMIDITY100
PRESSURE30.12
WIND COND.160 18.4
  • 4026Fri20%30%
  • 4024Sat30%
  • 3114Sun
  • 2918Mon
  • 4025Tue
daynightWeather update from Charles City at

Key findings

  • The highest monthly average temperature in Colwell for July is 72 degrees
  • The lowest monthly average temperature in Colwell for January is 18 degrees
  • The most monthly precipitation in Colwell occurs in June with 6 inches
  • The air quality index in Colwell is 70% better than the national average
  • The pollution index in Colwell is 74% better than the national average

Compare Colwell, IA Weather

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      Colwell 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
      January12°F26°F18°F0.5"
      February13°F29°F20°F0.6"
      March29°F44°F35°F1.4"
      April40°F60°F48°F3.0"
      May50°F71°F60°F3.0"
      June60°F80°F69°F6.0"
      July63°F82°F72°F4.7"
      August61°F80°F70°F4.2"
      September53°F75°F63°F5.0"
      October42°F61°F50°F2.3"
      November30°F46°F37°F1.1"
      December16°F30°F23°F1.4"

      Colwell 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.
      IndexColwellIowaNational
      Air quality index153950
      Pollution index1,320,0501,643,8365,066,862

      Colwell 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

      Colwell air quality information

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

      Average monthly Colwell temperature with heat index

      Colwell monthly precipitation with daily maximum

      Colwell monthly snow depth with daily maximum

      Colwell monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Orchard, IA501570%
      Marble Rock, IA3161570%
      Little Cedar, IA201570%
      Osage, IA3,6311570%
      Roseville, IA01570%
      Colwell, IA671570%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Laird, CO671962%
      Herron Island, WA672158%
      Churchville, VA673628%
      Gentry, MO674314%
      Effie, MN673530%
      Colwell, IA671570%
      Source: The Colwell, 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.