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Key findings

  • The highest monthly average temperature in Irwin for July is 78 degrees
  • The lowest monthly average temperature in Irwin for January is 24 degrees
  • The most monthly precipitation in Irwin occurs in August with 6.1 inches
  • The air quality index in Irwin is 20% better than the national average
  • The pollution index in Irwin is 90% better than the national average

Compare Irwin, IA Weather

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      Irwin 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
      January14°F37°F24°F0.6"
      February16°F41°F27°F0.9"
      March29°F56°F41°F1.5"
      April40°F67°F53°F3.8"
      May50°F77°F63°F5.2"
      June62°F87°F74°F4.9"
      July66°F91°F78°F3.1"
      August64°F88°F75°F6.1"
      September55°F82°F67°F3.7"
      October42°F69°F54°F3.0"
      November29°F55°F41°F1.0"
      December17°F39°F27°F1.7"

      Irwin 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.
      IndexIrwinIowaNational
      Air quality index403950
      Pollution index517,6911,643,8365,066,862

      Irwin air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality283
      Days with moderate air quality82
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Irwin air quality information

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

      Average monthly Irwin temperature with heat index

      Irwin monthly precipitation with daily maximum

      Irwin monthly snow depth with daily maximum

      Irwin monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Halbur, IA2433726%
      Templeton, IA3843726%
      Arion, IA1264020%
      Corley, IA294020%
      Elk Horn, IA5324020%
      Irwin, IA3284020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      South Heart, ND3283334%
      Torrey, UT328468%
      Arpin, WI3283432%
      Beclabito, NM328492%
      Niobrara, NE3283628%
      Irwin, IA3284020%
      Source: The Irwin, 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.