TODAY NOV21
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 5440Fri100%80%
  • 4939Sat90%80%
  • 4939Sun70%
  • 4838Mon
  • 4936Tue
daynightWeather update from FOREST GROVE at
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Weather Quick Facts

  • The highest monthly average temperature in Forest Grove for July is 67.8 degrees
  • The lowest monthly average temperature in Forest Grove for January is 38.5 degrees
  • The most monthly precipitation in Forest Grove occurs in December with 11.3 inches
  • The air quality index in Forest Grove is 10% better than the national average
  • The pollution index in Forest Grove is 456% worse than the national average

Compare Forest Grove, OR Weather

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      Forest Grove 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
      January32°F47°F38°F4.1"
      February33°F53°F42°F3.0"
      March38°F60°F48°F4.8"
      April39°F61°F50°F2.9"
      May45°F70°F57°F4.8"
      June48°F72°F59°F2.1"
      July53°F83°F68°F1.3"
      August51°F84°F67°F1.2"
      September44°F75°F59°F2.8"
      October42°F61°F50°F3.8"
      November33°F52°F42°F7.5"
      December33°F45°F39°F11.3"

      Forest Grove 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.
      IndexForest GroveOregonNational
      Air quality index383242
      Pollution index15,149,9007,156,3562,726,193

      Forest Grove air quality

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.160%
      Carbon Tetrachloride0.030%
      Lead0.080%
      Mercury0.010%

      Average monthly Forest Grove temperature with heat index

      Forest Grove monthly precipitation with daily maximum

      Forest Grove monthly snow depth with daily maximum

      Forest Grove monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      King City, OR4,3453824.0%
      Yamhill, OR1,3363824.0%
      Oak Hills, OR11,6823824.0%
      Beaverton, OR98,5673824.0%
      Newberg, OR23,6763824.0%
      Forest Grove, OR24,8473824.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Denison, TX24,851325550.0%
      North Laurel, MD24,856468.0%
      Burlington, IA24,8582942.0%
      Bainbridge Island, WA24,8594510.0%
      Ardmore, OK24,8344314.0%
      Forest Grove, OR24,8473824.0%
      Source: The Forest Grove, OR 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.