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Key findings

  • The highest monthly average temperature in La Grande for July is 71.1 degrees
  • The lowest monthly average temperature in La Grande for December is 31.3 degrees
  • The most monthly precipitation in La Grande occurs in May with 4 inches
  • The air quality index in La Grande is 60% better than the national average
  • The pollution index in La Grande is 60% better than the national average

Compare La Grande, OR Weather

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      La Grande 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
      January26°F39°F32°F2.0"
      February30°F46°F37°F2.1"
      March33°F54°F42°F2.0"
      April36°F61°F47°F2.2"
      May42°F69°F55°F4.0"
      June48°F77°F62°F3.8"
      July53°F89°F71°F2.6"
      August50°F88°F69°F2.2"
      September43°F79°F60°F2.0"
      October37°F64°F49°F2.4"
      November32°F49°F40°F1.9"
      December25°F38°F31°F2.2"

      La Grande 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.
      IndexLa GrandeOregonNational
      Air quality index203250
      Pollution index1,082,3407,156,3562,726,193

      La Grande air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality344
      Days with moderate air quality21
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      La Grande air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly La Grande temperature with heat index

      La Grande monthly precipitation with daily maximum

      La Grande monthly snow depth with daily maximum

      La Grande monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Imbler, OR3362060.0%
      Island City, OR1,2252060.0%
      Summerville, OR1112060.0%
      Cove, OR7262060.0%
      Union, OR2,1822060.0%
      La Grande, OR13,0792060.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Beaufort, SC13,0742942.0%
      Endicott, NY13,0733628.0%
      Andrews, TX13,0872844.0%
      Atlantic Beach, FL13,0894314.0%
      Boerne, TX13,066492.0%
      La Grande, OR13,0792060.0%
      Source: The La Grande, 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.