TODAY NOV21
TEMPERATURE44
HUMIDITY96
PRESSURE
WIND COND.326 3.2
  • 5439Fri80%90%
  • 5035Sat60%30%
  • 4936Sun40%
  • 4938Mon
  • 5034Tue
daynightWeather update from MERLIN at
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Weather Quick Facts

  • The highest monthly average temperature in Grants Pass for August is 64.6 degrees
  • The lowest monthly average temperature in Grants Pass for December is 35.9 degrees
  • The most monthly precipitation in Grants Pass occurs in December with 8.9 inches
  • The air quality index in Grants Pass is 38% better than the national average
  • The pollution index in Grants Pass is 408% worse than the national average

Compare Grants Pass, OR Weather

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      Grants Pass 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
      January33°F44°F38°F6.6"
      February33°F45°F38°F6.4"
      March33°F47°F39°F6.7"
      April35°F53°F42°F3.3"
      May41°F63°F49°F2.2"
      June46°F69°F55°F1.3"
      July54°F78°F64°F0.3"
      August55°F79°F65°F0.2"
      September51°F72°F59°F1.0"
      October44°F59°F50°F3.8"
      November36°F47°F41°F6.1"
      December31°F42°F36°F8.9"

      Grants Pass 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.
      IndexGrants PassOregonNational
      Air quality index263242
      Pollution index13,842,6007,156,3562,726,193

      Grants Pass air quality

      MeasurementTotal
      Days measured365
      Days with good air quality283
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality2

      Air quality details

      PollutantTotal
      Arsenic0.020%
      Benzene0.210%
      Carbon Tetrachloride0.030%
      Lead0.030%
      Mercury0.020%

      Average monthly Grants Pass temperature with heat index

      Grants Pass monthly precipitation with daily maximum

      Grants Pass monthly snow depth with daily maximum

      Grants Pass monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Redwood, OR2,8602648.0%
      Rogue River, OR1,7702648.0%
      Selma, OR9132648.0%
      Merlin, OR1,7922648.0%
      Foots Creek, OR7962648.0%
      Grants Pass, OR37,9382648.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Parkland, WA37,9463040.0%
      Prince Albert, SK37,925n/a 
      Longview, WA37,9141864.0%
      Kailua, HI37,9003040.0%
      East Meadow, NY37,992512.0%
      Grants Pass, OR37,9382648.0%
      Source: The Grants Pass, 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.