TODAY JUN18
TEMPERATURE81
HUMIDITY73
PRESSURE29.99
WIND COND.240 8.1
  • 8365Tue60%40%
  • 7863Wed40%40%
  • 7563Thu60%70%
  • 7762Fri60%40%
  • 8063Sat
daynightWeather update from Grinnell Municipal Airfield at

Chelsea Average Weather

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
January-18°F48°F18°Fn/a
February-8°F61°F25°Fn/a
March1°F72°F36°Fn/a
April27°F88°F48°Fn/a
May37°F86°F62°Fn/a
June52°F93°F72°Fn/a
July54°F91°F73°Fn/a
August46°F91°F72°Fn/a
September34°F88°F65°Fn/a
October25°F86°F53°Fn/a
November10°F77°F42°Fn/a
December-8°F63°F23°Fn/a

Did you know?

  • The highest monthly average temperature in Chelsea for July is 73 degrees.
  • The lowest monthly average temperature in Chelsea for January is 18 degrees.
  • The most monthly precipitation in Chelsea occurs in January with 0 inches.
  • The air quality index in Chelsea is 15% better than the national average.
  • The pollution index in Chelsea is 91% better than the national average.

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Compare Chelsea, IA Weather To Other Cities

Chelsea 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.
IndexChelseaIowaNational
Air quality index423950
Pollution index416,1141,643,8365,066,862

Chelsea air quality information

MeasurementTotal
Days measured365
Days with good air quality256
Days with moderate air quality108
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

Chelsea air quality information

PollutantTotal
Arsenic0.000%
Benzene0.004%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.000%

Average monthly Chelsea temperature with heat index

Chelsea monthly precipitation with daily maximum

Chelsea monthly snow depth with daily maximum

Chelsea monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Belle Plaine, IA2,5624216%
Ladora, IA3084216%
Brooklyn, IA1,4224216%
Hartwick, IA984216%
Luzerne, IA1384216%
Chelsea, IA2424216%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lake Tomahawk, WI2423628%
Winston, MT2423530%
Alice Acres, TX2423138%
Bath, SD2422648%
Yaak, MT2423824%
Chelsea, IA2424216%
Source: The Chelsea, 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.