TODAY MAY06
TEMPERATURE63
HUMIDITY33
PRESSURE30.1
WIND COND.290 5.4
  • 6341Thu20%
  • 6540Fri
  • 6142Sat50%
  • 6038Sun30%
  • 6240Mon
daynightWeather update from Grinnell Municipal Airfield at

Key findings

  • The highest monthly average temperature in Guernsey for July is 74.3 degrees
  • The lowest monthly average temperature in Guernsey for January is 21.3 degrees
  • The most monthly precipitation in Guernsey occurs in June with 7.8 inches
  • The air quality index in Guernsey is 22% better than the national average
  • The pollution index in Guernsey is 86% better than the national average

Compare Guernsey, IA Weather

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      Guernsey 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°F30°F21°F1.4"
      February17°F33°F24°F2.7"
      March31°F50°F39°F3.7"
      April40°F63°F50°F7.2"
      May52°F74°F62°F7.7"
      June62°F82°F72°F7.8"
      July65°F85°F74°F7.6"
      August63°F82°F72°F7.4"
      September54°F77°F64°F7.1"
      October43°F64°F53°F6.9"
      November32°F50°F40°F3.7"
      December20°F35°F27°F5.3"

      Guernsey 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.
      IndexGuernseyIowaNational
      Air quality index393950
      Pollution index684,4641,643,8365,066,862

      Guernsey air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality287
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Guernsey air quality information

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

      Average monthly Guernsey temperature with heat index

      Guernsey monthly precipitation with daily maximum

      Guernsey monthly snow depth with daily maximum

      Guernsey monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Millersburg, IA1543530%
      Keswick, IA2413530%
      Barnes City, IA2653530%
      South English, IA2993530%
      Deep River, IA2523530%
      Guernsey, IA723922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Gallatin River Ranch, MT722550%
      Lake Mary Ronan, MT723726%
      Aldrich, MO723922%
      Souris, ND723432%
      Mountain, ND723334%
      Guernsey, IA723922%
      Source: The Guernsey, 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.