TODAY APR16
TEMPERATURE50
HUMIDITY83
PRESSURE102570
WIND COND.280 7.6
  • 5648Wed
  • 5749Thu
  • 5649Fri
  • 5648Sat
  • 5648Sun
daynightWeather update from Arcata / Eureka, Arcata Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Trinidad for August is 56.3 degrees
  • The lowest monthly average temperature in Trinidad for January is 46.4 degrees
  • The most monthly precipitation in Trinidad occurs in December with 8.8 inches
  • The air quality index in Trinidad is 36% better than the national average
  • The pollution index in Trinidad is 107% worse than the national average

Compare Trinidad, CA Weather

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      Trinidad 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
      January39°F56°F46°F6.8"
      February40°F57°F47°F6.2"
      March41°F57°F48°F8.0"
      April42°F58°F49°F4.5"
      May45°F60°F52°F1.8"
      June48°F62°F55°F1.4"
      July51°F63°F56°F0.3"
      August51°F64°F56°F0.2"
      September48°F65°F55°F1.1"
      October46°F64°F53°F3.8"
      November43°F59°F50°F6.1"
      December39°F55°F46°F8.8"

      Trinidad 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.
      IndexTrinidadCaliforniaNational
      Air quality index275542
      Pollution index5,642,31010,473,1902,726,193

      Trinidad air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality353
      Days with moderate air quality10
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Trinidad air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.080%
      Carbon Tetrachloride0.000%
      Lead0.050%
      Mercury0.050%

      Average monthly Trinidad temperature with heat index

      Trinidad monthly precipitation with daily maximum

      Trinidad monthly snow depth with daily maximum

      Trinidad monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      McKinleyville, CA16,6452746.0%
      Arcata, CA18,2662746.0%
      Manila, CA7622746.0%
      Blue Lake, CA9342746.0%
      Big Lagoon, CA922746.0%
      Trinidad, CA3482746.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Donaldson, AR3483236.0%
      Okolona, AR3483236.0%
      Buckner, IL3484314.0%
      Snow Lake Shores, MS3484510.0%
      Shannon, NC3483040.0%
      Trinidad, CA3482746.0%
      Source: The Trinidad, 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.