TODAY MAR19
TEMPERATURE25
HUMIDITY58
PRESSURE101970
WIND COND.210 9.4
  • 6127Tue
  • 4225Wed
  • 4831Thu20%30%
  • 4824Fri
  • 4131Sat
daynightWeather update from Atlantic at
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Weather Quick Facts

  • The highest monthly average temperature in Shelby for July is 78.2 degrees
  • The lowest monthly average temperature in Shelby for January is 23.9 degrees
  • The most monthly precipitation in Shelby occurs in August with 6.1 inches
  • The air quality index in Shelby is 5% better than the national average
  • The pollution index in Shelby is 60% worse than the national average

Compare Shelby, IA Weather

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      Shelby 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"

      Shelby 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.
      IndexShelbyIowaNational
      Air quality index403942
      Pollution index4,349,9301,154,5352,726,193

      Shelby 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

      Shelby air quality information

      PollutantTotal
      Arsenic0.210%
      Benzene0.040%
      Carbon Tetrachloride0.004%
      Lead0.100%
      Mercury0.160%

      Average monthly Shelby temperature with heat index

      Shelby monthly precipitation with daily maximum

      Shelby monthly snow depth with daily maximum

      Shelby monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Oakland, IA1,6654020.0%
      Persia, IA3424020.0%
      Hancock, IA2634020.0%
      Underwood, IA9554020.0%
      Westphalia, IA1614020.0%
      Shelby, IA7084020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Huttig, AR7083530.0%
      Ducor, CA7086632.0%
      Sharpsburg, MD7084020.0%
      Hardwood Acres, MI7083628.0%
      Muir, MI7083628.0%
      Shelby, IA7084020.0%
      Source: The Shelby, 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.