TODAY DEC11
TEMPERATURE18
HUMIDITY86
PRESSURE30.07
WIND COND.210 3.4
  • 2921Tue
  • 2822Wed20%
  • 3323Thu20%
  • 3320Fri
  • 3523Sat
daynightWeather update from Charles City at

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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"

Did you know?

  • 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 63% better than the national average.
  • The pollution index in Colwell is 73% better than the national average.

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Compare Colwell, IA Weather To Other Cities

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 index183950
Pollution index1,320,0501,643,8365,066,862

Colwell 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

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.
Charles City, IA7,4961864%
Little Cedar, IA201864%
Osage, IA3,6311864%
Elma, IA5621864%
Marble Rock, IA3161864%
Colwell, IA671864%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mantador, ND673530%
Forestville, MI67285470%
Whalan, MN672158%
Carrick, CA673824%
Woodlawn Heights, IN674216%
Colwell, IA671864%
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.