TODAY FEB27
TEMPERATURE32
HUMIDITY53
PRESSURE29.77
WIND COND.230 5.4
  • 3610Sat20%
  • 3612Sun
  • 4922Mon
  • 5525Tue
  • 5526Wed
daynightWeather update from Vance Brand Airport at

Key findings

  • The highest monthly average temperature in Niwot for July is 75 degrees
  • The lowest monthly average temperature in Niwot for December is 30 degrees
  • The most monthly precipitation in Niwot occurs in November with 2.6 inches
  • The air quality index in Niwot is 5% better than the national average
  • The pollution index in Niwot is 77% better than the national average

Compare Niwot, CO Weather

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      Niwot 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
      January18°F48°F32°F1.2"
      February21°F50°F34°F1.5"
      March30°F62°F44°F1.6"
      April36°F66°F49°F0.2"
      May43°F73°F57°F2.4"
      June54°F89°F71°F1.1"
      July59°F92°F75°F2.1"
      August56°F90°F72°F1.1"
      September49°F82°F64°F0.2"
      October38°F69°F52°F2.1"
      November28°F58°F41°F2.6"
      December17°F46°F30°F0.7"

      Niwot 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.
      IndexNiwotColoradoNational
      Air quality index473850
      Pollution index1,163,3002,034,6195,066,862

      Niwot air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality227
      Days with moderate air quality133
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality0

      Niwot air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.000%

      Average monthly Niwot temperature with heat index

      Niwot monthly precipitation with daily maximum

      Niwot monthly snow depth with daily maximum

      Niwot monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Mead, CO4,1814510%
      Lafayette, CO27,053476%
      Lazy Acres, CO915476%
      Bark Ranch, CO224476%
      Jamestown, CO219476%
      Niwot, CO4,588476%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Spotsylvania Courthouse, VA4,5904412%
      Breese, IL4,5904314%
      Wanamassa, NJ4,591512%
      Ogallala, NE4,5921962%
      Savannah, TX4,592512%
      Niwot, CO4,588476%
      Source: The Niwot, 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.