TODAY JUN20
TEMPERATURE64
HUMIDITY100
PRESSURE29.87
WIND COND.360 4.7
  • 6959Thu80%40%
  • 7558Fri30%20%
  • 7660Sat30%40%
  • 7962Sun
  • 7864Mon50%
daynightWeather update from Storm Lake at

Marathon 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-13°F59°F23°Fn/a
February-15°F63°F23°Fn/a
March-6°F86°F37°Fn/a
April16°F93°F51°Fn/a
May34°F97°F63°Fn/a
June46°F99°F73°Fn/a
July52°F100°F76°Fn/a
August52°F95°F73°Fn/a
September34°F97°F65°Fn/a
October23°F91°F53°Fn/a
November3°F82°F39°Fn/a
December-9°F57°F25°Fn/a

Did you know?

  • The highest monthly average temperature in Marathon for July is 76 degrees.
  • The lowest monthly average temperature in Marathon for February is 23 degrees.
  • The most monthly precipitation in Marathon occurs in January with 0 inches.
  • The air quality index in Marathon is 17% better than the national average.
  • The pollution index in Marathon is 84% better than the national average.

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Compare Marathon, IA Weather To Other Cities

Marathon 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.
IndexMarathonIowaNational
Air quality index413950
Pollution index769,6971,643,8365,066,862

Marathon air quality information

MeasurementTotal
Days measured365
Days with good air quality254
Days with moderate air quality110
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

Marathon air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.002%
Mercury0.000%

Average monthly Marathon temperature with heat index

Marathon monthly precipitation with daily maximum

Marathon monthly snow depth with daily maximum

Marathon monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Ayrshire, IA1361864%
Curlew, IA731864%
Havelock, IA1373726%
Gillett Grove, IA354118%
Linn Grove, IA1404118%
Marathon, IA2704118%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Waukau, WI2703628%
Greigsville, NY2703628%
Humptulips, WA2702158%
Pecktonville, MD2704118%
Ravenden Springs, AR2703628%
Marathon, IA2704118%
Source: The Marathon, 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.