TODAY MAY10
TEMPERATURE42
HUMIDITY64
PRESSURE30.08
WIND COND.130 11.2
  • 4635Mon70%90%
  • 4733Tue40%30%
  • 6240Wed
  • 7547Thu
  • 7748Fri
daynightWeather update from Denver - Centennial Airport at

Key findings

  • The highest monthly average temperature in Littleton for July is 72.9 degrees
  • The lowest monthly average temperature in Littleton for December is 30.2 degrees
  • The most monthly precipitation in Littleton occurs in July with 2.3 inches
  • The air quality index in Littleton is 17% worse than the national average
  • The pollution index in Littleton is 93% better than the national average

Compare Littleton, CO Weather

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      Littleton 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
      January19°F46°F32°F0.5"
      February20°F48°F33°F0.5"
      March28°F58°F42°F0.9"
      April33°F63°F47°F2.0"
      May42°F70°F55°F2.3"
      June53°F85°F68°F2.0"
      July59°F88°F73°F2.3"
      August57°F86°F71°F2.1"
      September49°F79°F63°F1.7"
      October37°F67°F51°F1.3"
      November28°F58°F41°F0.4"
      December18°F45°F30°F0.5"

      Littleton 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.
      IndexLittletonColoradoNational
      Air quality index583850
      Pollution index331,4752,034,6195,066,862

      Littleton air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality91
      Days with moderate air quality252
      Days w/ poor A.Q. for sensitive groups20
      Days with unhealthy air quality2

      Littleton air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.000%

      Average monthly Littleton temperature with heat index

      Littleton monthly precipitation with daily maximum

      Littleton monthly snow depth with daily maximum

      Littleton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Greenwood Village, CO15,2085816%
      Morrison, CO3665816%
      Aurora, CO351,1315816%
      Edgewater, CO5,2785816%
      Mountain View, CO5225816%
      Littleton, CO45,0725816%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Altadena, CA45,0017244%
      Cleveland Heights, OH45,16050= 100
      West Seneca, NY45,1973922%
      Altoona, PA45,2094118%
      Biloxi, MS45,2714216%
      Littleton, CO45,0725816%
      Source: The Littleton, CO 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.