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Key findings

  • The highest monthly average temperature in Rosemont for July is 74.3 degrees
  • The lowest monthly average temperature in Rosemont for January is 46.5 degrees
  • The most monthly precipitation in Rosemont occurs in December with 3.8 inches
  • The air quality index in Rosemont is 5% worse than the national average
  • The pollution index in Rosemont is 468% worse than the national average

Compare Rosemont, CA Weather

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      Rosemont 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
      January38°F58°F47°F3.3"
      February41°F63°F51°F3.1"
      March44°F68°F55°F2.9"
      April47°F74°F59°F1.8"
      May52°F82°F65°F0.5"
      June57°F90°F71°F0.3"
      July59°F95°F74°F0.0"
      August58°F93°F73°F0.0"
      September56°F90°F70°F0.1"
      October50°F79°F63°F1.2"
      November43°F66°F53°F1.6"
      December38°F57°F47°F3.8"

      Rosemont 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.
      IndexRosemontCaliforniaNational
      Air quality index525550
      Pollution index15,476,50010,473,1902,726,193

      Rosemont air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality171
      Days with moderate air quality173
      Days w/ poor A.Q. for sensitive groups21
      Days with unhealthy air quality0

      Rosemont air quality information

      PollutantTotal
      Arsenic0.090%
      Benzene0.130%
      Carbon Tetrachloride0.010%
      Lead0.130%
      Mercury0.070%

      Average monthly Rosemont temperature with heat index

      Rosemont monthly precipitation with daily maximum

      Rosemont monthly snow depth with daily maximum

      Rosemont monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Courtland, CA520524.0%
      Antelope, CA48,325524.0%
      Elverta, CA5,424524.0%
      Gold River, CA7,652524.0%
      North Highlands, CA46,841524.0%
      Rosemont, CA23,081524.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Denison, TX23,080325550.0%
      Solon, OH23,08550= 100
      McDonough, GA23,086524.0%
      East Peoria, IL23,0904118.0%
      Mount Pearl, NL23,066n/a 
      Rosemont, CA23,081524.0%
      Source: The Rosemont, CA 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.