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Key findings

  • The highest monthly average temperature in Rainier for August is 65.7 degrees
  • The lowest monthly average temperature in Rainier for December is 39.3 degrees
  • The most monthly precipitation in Rainier occurs in December with 8.9 inches
  • The air quality index in Rainier is 64% better than the national average
  • The pollution index in Rainier is 55% worse than the national average

Compare Rainier, OR Weather

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      Rainier 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
      January35°F47°F40°F8.3"
      February36°F52°F42°F5.4"
      March40°F56°F46°F6.0"
      April41°F62°F50°F4.8"
      May47°F69°F56°F5.7"
      June52°F73°F60°F3.6"
      July55°F80°F65°F2.1"
      August55°F81°F66°F2.8"
      September51°F75°F61°F5.1"
      October46°F63°F53°F6.4"
      November40°F52°F45°F8.2"
      December35°F45°F39°F8.9"

      Rainier 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.
      IndexRainierOregonNational
      Air quality index183250
      Pollution index4,215,4107,156,3562,726,193

      Rainier air quality information

      MeasurementTotal
      Days measured360
      Days with good air quality338
      Days with moderate air quality22
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Rainier air quality information

      PollutantTotal
      Arsenic0.005%
      Benzene0.050%
      Carbon Tetrachloride0.004%
      Lead0.030%
      Mercury0.250%

      Average monthly Rainier temperature with heat index

      Rainier monthly precipitation with daily maximum

      Rainier monthly snow depth with daily maximum

      Rainier monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Vernonia, OR1,8951864.0%
      Deer Island, OR3751864.0%
      Kalama, WA2,5961864.0%
      West Side Highway, WA5,7351864.0%
      Prescott, OR441864.0%
      Rainier, OR1,9711864.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Long Valley, NJ1,9713432.0%
      Mount Holly Springs, PA1,9714216.0%
      Division No. 4, Subd. E, NL1,971n/a 
      Igloolik, NU1,971n/a 
      Watkins Glen, NY1,9703530.0%
      Rainier, OR1,9711864.0%
      Source: The Rainier, 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.