TODAY FEB28
TEMPERATURE53
HUMIDITY40
PRESSURE
WIND COND.124 3.5
  • 6049Mon
  • 5949Tue
  • 6048Wed
  • 5950Thu
  • 6050Fri
daynightWeather update from Morro Bay Harbor at

Key findings

  • The highest monthly average temperature in Morro Bay for September is 65 degrees
  • The lowest monthly average temperature in Morro Bay for December is 52 degrees
  • The most monthly precipitation in Morro Bay occurs in January with 3.9 inches
  • The air quality index in Morro Bay is 8% better than the national average
  • The pollution index in Morro Bay is 11% worse than the national average

Compare Morro Bay, CA Weather

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      Morro Bay 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
      January41°F68°F53°F3.9"
      February43°F67°F54°F2.6"
      March45°F69°F55°F2.2"
      April47°F71°F57°F1.4"
      May49°F73°F59°F0.3"
      June52°F77°F62°F0.1"
      July55°F79°F64°F0.1"
      August56°F80°F64°F0.0"
      September55°F82°F65°F0.0"
      October52°F80°F63°F0.9"
      November46°F73°F57°F1.1"
      December41°F66°F52°F3.1"

      Morro Bay 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.
      IndexMorro BayCaliforniaNational
      Air quality index465550
      Pollution index5,611,11018,106,7265,066,862

      Morro Bay air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality230
      Days with moderate air quality132
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Morro Bay air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.060%
      Mercury0.010%

      Average monthly Morro Bay temperature with heat index

      Morro Bay monthly precipitation with daily maximum

      Morro Bay monthly snow depth with daily maximum

      Morro Bay monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Avila Beach, CA1,242468%
      Los Osos, CA15,603468%
      Santa Margarita, CA1,346468%
      Cayucos, CA2,987468%
      Garden Farms, CA312468%
      Morro Bay, CA10,519468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Harrison, OH10,522548%
      Bound Brook, NJ10,5124118%
      Farmington, MI10,5265612%
      Maynard, MA10,5264020%
      Royse City, TX10,532512%
      Morro Bay, CA10,519468%
      Source: The Morro Bay, 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.