TODAY FEB19
TEMPERATURE10
HUMIDITY63
PRESSURE30.64
WIND COND.330 12.8
  • 121Thu
  • 3422Fri
  • 3826Sat
  • 3721Sun
  • 3525Mon30%30%
daynightWeather update from Mason City, Mason City Municipal Airport at
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Mason City 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 Mason City for July is 72 degrees.
  • The lowest monthly average temperature in Mason City for January is 17 degrees.
  • The most monthly precipitation in Mason City occurs in June with 5.4 inches.
  • The air quality index in Mason City is 64% better than the national average.
  • The pollution index in Mason City is 80% better than the national average.

Compare Mason City, IA Weather To Other Cities

Mason City 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.
IndexMason CityIowaNational
Air quality index183950
Pollution index1,013,9601,643,8365,066,862

Mason City 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

Mason City air quality information

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

Average monthly Mason City temperature with heat index

Mason City monthly precipitation with daily maximum

Mason City monthly snow depth with daily maximum

Mason City monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Grafton, IA3551864%
Manly, IA1,5511864%
Rock Falls, IA1501864%
Swaledale, IA1811864%
Burchinal, IA531864%
Mason City, IA27,5461864%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Seguin, TX27,5434510%
Magna, UT27,553476%
Danvers, MA27,558476%
Paragould, AR27,5213628%
Allen Park, MI27,519524%
Mason City, IA27,5461864%
Source: The Mason City, 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.
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