TODAY NOV22
TEMPERATURE47
HUMIDITY86
PRESSURE100480
WIND COND.350 9.4
  • 5643Fri80%80%
  • 5042Sat90%80%
  • 5140Sun70%80%
  • 4939Mon
  • 4938Tue
daynightWeather update from Aurora State Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Lake Oswego for July is 69 degrees
  • The lowest monthly average temperature in Lake Oswego for January is 39.8 degrees
  • The most monthly precipitation in Lake Oswego occurs in December with 10.1 inches
  • The air quality index in Lake Oswego is 10% better than the national average
  • The pollution index in Lake Oswego is 323% worse than the national average

Compare Lake Oswego, OR Weather

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      Lake Oswego 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
      January34°F48°F40°F4.1"
      February35°F53°F43°F3.9"
      March40°F61°F49°F4.7"
      April42°F62°F51°F3.1"
      May48°F70°F58°F4.2"
      June51°F73°F60°F2.3"
      July56°F84°F69°F2.0"
      August55°F85°F68°F4.3"
      September49°F76°F61°F4.5"
      October46°F62°F53°F5.6"
      November36°F53°F43°F5.8"
      December35°F47°F40°F10.1"

      Lake Oswego 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.
      IndexLake OswegoOregonNational
      Air quality index383242
      Pollution index11,541,1007,156,3562,726,193

      Lake Oswego 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%
      Benzene0.140%
      Carbon Tetrachloride0.020%
      Lead0.020%
      Mercury0.010%

      Average monthly Lake Oswego temperature with heat index

      Lake Oswego monthly precipitation with daily maximum

      Lake Oswego monthly snow depth with daily maximum

      Lake Oswego monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Donald, OR1,4653236.0%
      Dundee, OR3,2963236.0%
      St. Paul, OR3963236.0%
      Fairview, OR9,3823824.0%
      Wood Village, OR4,0693824.0%
      Lake Oswego, OR39,4763824.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Carol Stream, IL39,4475510.0%
      Los Banos, CA39,443484.0%
      Plant City, FL39,4373628.0%
      Columbia, TN39,5153138.0%
      Meadow Woods, FL39,4243922.0%
      Lake Oswego, OR39,4763824.0%
      Source: The Lake Oswego, 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.