TODAY MAY14
TEMPERATURE61
HUMIDITY62
PRESSURE29.91
WIND COND.340 14.8
  • 7954Sat
  • 8154Sun
  • 8552Mon
  • 8051Tue
  • 7849Wed
daynightWeather update from Modesto, Modesto City-County-Sham Field at

Key findings

  • The highest monthly average temperature in Riverdale Park for July is 80.2 degrees
  • The lowest monthly average temperature in Riverdale Park for January is 46.9 degrees
  • The most monthly precipitation in Riverdale Park occurs in January with 2.4 inches
  • The air quality index in Riverdale Park is 1% better than the national average
  • The pollution index in Riverdale Park is 53% worse than the national average

Compare Riverdale Park, CA Weather

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      Riverdale Park 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°F2.4"
      February42°F64°F52°F1.9"
      March46°F70°F57°F1.7"
      April49°F76°F61°F1.3"
      May54°F85°F69°F0.4"
      June60°F93°F76°F0.2"
      July64°F98°F80°F0.0"
      August63°F96°F78°F0.0"
      September59°F91°F74°F0.1"
      October52°F80°F64°F0.7"
      November44°F68°F54°F1.1"
      December38°F58°F47°F2.3"

      Riverdale Park 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.
      IndexRiverdale ParkCaliforniaNational
      Air quality index495550
      Pollution index7,774,44018,106,7265,066,862

      Riverdale Park air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality201
      Days with moderate air quality141
      Days w/ poor A.Q. for sensitive groups22
      Days with unhealthy air quality1

      Riverdale Park air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.090%
      Carbon Tetrachloride0.000%
      Lead0.050%
      Mercury0.040%

      Average monthly Riverdale Park temperature with heat index

      Riverdale Park monthly precipitation with daily maximum

      Riverdale Park monthly snow depth with daily maximum

      Riverdale Park monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Manteca, CA73,5704510%
      Delhi, CA10,968484%
      Oakdale, CA21,796492%
      Ceres, CA47,231492%
      Grayson, CA990492%
      Riverdale Park, CA1,056492%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Central City, IL1,0564314%
      Clear Lake, WA1,0563040%
      Andover, OH1,0563432%
      Millport, AL1,0563530%
      Damariscotta, ME1,0563628%
      Riverdale Park, CA1,056492%
      Source: The Riverdale Park, 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.