TODAY MAY17
TEMPERATURE60
HUMIDITY90
PRESSURE30.12
WIND COND.100 20.5
  • 7061Tue50%40%
  • 8063Wed60%80%
  • 8165Thu50%70%
  • 8265Fri30%40%
  • 8364Sat30%50%
daynightWeather update from Cedar Rapids, The Eastern Iowa Airport at

Key findings

  • The highest monthly average temperature in Williamsburg for July is 73.2 degrees
  • The lowest monthly average temperature in Williamsburg for January is 20.1 degrees
  • The most monthly precipitation in Williamsburg occurs in June with 7 inches
  • The air quality index in Williamsburg is 30% better than the national average
  • The pollution index in Williamsburg is 86% better than the national average

Compare Williamsburg, IA Weather

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      Williamsburg 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
      January12°F29°F20°F0.8"
      February14°F32°F23°F1.0"
      March28°F48°F37°F2.1"
      April39°F63°F50°F4.6"
      May50°F73°F61°F3.9"
      June60°F81°F70°F7.0"
      July63°F84°F73°F4.8"
      August61°F82°F71°F4.7"
      September53°F76°F64°F4.0"
      October42°F63°F52°F3.1"
      November29°F49°F38°F2.1"
      December17°F33°F25°F1.9"

      Williamsburg 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.
      IndexWilliamsburgIowaNational
      Air quality index353950
      Pollution index684,4641,643,8365,066,862

      Williamsburg air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality278
      Days with moderate air quality86
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Williamsburg air quality information

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

      Average monthly Williamsburg temperature with heat index

      Williamsburg monthly precipitation with daily maximum

      Williamsburg monthly snow depth with daily maximum

      Williamsburg monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Parnell, IA2063530%
      Oxford, IA8743530%
      Keswick, IA2413530%
      Wellman, IA1,3653530%
      Kinross, IA533530%
      Williamsburg, IA3,1443530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Myerstown, PA3,1444216%
      Brentwood, MD3,144476%
      Wise, VA3,1454510%
      Haviland, NY3,1433628%
      Homestead, PA3,1425612%
      Williamsburg, IA3,1443530%
      Source: The Williamsburg, 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.