TODAY OCT15
TEMPERATURE70
HUMIDITY60
PRESSURE101590
WIND COND.210 11.2
  • 8258Tue
  • 7352Wed50%
  • 7048Thu20%
  • 7551Fri
  • 8151Sat
daynightWeather update from Sacramento Mather Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Folsom for July is 74.3 degrees
  • The lowest monthly average temperature in Folsom for January is 46.5 degrees
  • The most monthly precipitation in Folsom occurs in December with 3.8 inches
  • The air quality index in Folsom is 24% worse than the national average
  • The pollution index in Folsom is 57% worse than the national average

Compare Folsom, CA Weather

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      Folsom 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"

      Folsom 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.
      IndexFolsomCaliforniaNational
      Air quality index525542
      Pollution index4,289,31010,473,1902,726,193

      Folsom air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.050%
      Benzene0.070%
      Carbon Tetrachloride0.001%
      Lead0.060%
      Mercury0.010%

      Average monthly Folsom temperature with heat index

      Folsom monthly precipitation with daily maximum

      Folsom monthly snow depth with daily maximum

      Folsom monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Carmichael, CA75,642524.0%
      Gold River, CA7,930524.0%
      North Highlands, CA48,660524.0%
      Rancho Murieta, CA5,682524.0%
      Loomis, CA6,802524.0%
      Folsom, CA79,584524.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Lakewood, CA79,6767244.0%
      Saint-Jérôme, QC79,702n/a 
      New Rochelle, NY79,367512.0%
      Alameda, CA79,8274020.0%
      Pleasanton, CA79,9754314.0%
      Folsom, CA79,584524.0%
      Source: The Folsom, 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.