TODAY NOV21
TEMPERATURE50
HUMIDITY100
PRESSURE
WIND COND.152 9.6
  • 5746Fri100%100%
  • 5940Sat50%40%
  • 5344Sun60%
  • 5745Mon
  • 5641Tue
daynightWeather update from SAC NWR at
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Weather Quick Facts

  • The highest monthly average temperature in Princeton for July is 81 degrees
  • The lowest monthly average temperature in Princeton for December is 46.6 degrees
  • The most monthly precipitation in Princeton occurs in December with 4.1 inches
  • The air quality index in Princeton is 9% worse than the national average
  • The pollution index in Princeton is 26% better than the national average

Compare Princeton, CA Weather

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      Princeton 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°F3.5"
      February42°F62°F51°F3.9"
      March45°F67°F56°F3.7"
      April48°F74°F60°F2.1"
      May55°F84°F69°F0.7"
      June61°F92°F76°F0.3"
      July65°F98°F81°F0.0"
      August63°F95°F79°F0.0"
      September59°F90°F74°F0.2"
      October51°F79°F64°F1.2"
      November44°F65°F54°F2.6"
      December38°F57°F47°F4.1"

      Princeton 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.
      IndexPrincetonCaliforniaNational
      Air quality index465542
      Pollution index2,024,69010,473,1902,726,193

      Princeton air quality

      MeasurementTotal
      Days measured365
      Days with good air quality224
      Days with moderate air quality136
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality2

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.020%

      Average monthly Princeton temperature with heat index

      Princeton monthly precipitation with daily maximum

      Princeton monthly snow depth with daily maximum

      Princeton monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Colusa, CA6,1114412.0%
      Maxwell, CA1,2564412.0%
      Richvale, CA157468.0%
      Willows, CA6,053468.0%
      Princeton, CA337468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Clacks Canyon, AZ3371374.0%
      Mexican Colony, CA3376734.0%
      Concord, GA337524.0%
      Lohrville, IA3373726.0%
      Sheldahl, IA3373726.0%
      Princeton, CA337468.0%
      Source: The Princeton, 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.