Average Weather in October at Catalina Airport California, United States
At Catalina Airport, the month of October is characterized by gradually falling daily high temperatures, with daily highs decreasing by 4°F, from 77°F to 73°F over the course of the month, and rarely exceeding 89°F or dropping below 62°F.
Daily low temperatures decrease by 4°F, from 64°F to 60°F, rarely falling below 53°F or exceeding 74°F.
For reference, on August 24, the hottest day of the year, temperatures at Catalina Airport typically range from 67°F to 81°F, while on March 18, the coldest day of the year, they range from 52°F to 65°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in October
The month of October at Catalina Airport experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 13% to 24%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 87% of the time.
For reference, on February 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 41%, while on September 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%.
Cloud Cover Categories in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Catalina Airport, the chance of a wet day over the course of October is increasing, starting the month at 3% and ending it at 7%.
For reference, the year's highest daily chance of a wet day is 20% on February 20, and its lowest chance is 0% on July 16.
Probability of Precipitation in October
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during October at Catalina Airport is gradually increasing, starting the month at 0.2 inches, when it rarely exceeds 0.8 inches or falls below -0.0 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.6 inches.
Average Monthly Rainfall in October
Over the course of October at Catalina Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 59 minutes, implying an average daily decrease of 1 minute, 58 seconds, and weekly decrease of 13 minutes, 43 seconds.
The shortest day of the month is October 31, with 10 hours, 51 minutes of daylight and the longest day is October 1, with 11 hours, 49 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month at Catalina Airport is 6:48 AM on October 1 and the latest sunrise is 24 minutes later at 7:11 AM on October 31.
The latest sunset is 6:37 PM on October 1 and the earliest sunset is 35 minutes earlier at 6:02 PM on October 31.
Daylight saving time is observed at Catalina Airport during 2017, but it neither starts nor ends during October, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:44 AM and sets 14 hours, 22 minutes later, at 8:06 PM, while on December 21, the shortest day of the year, it rises at 6:53 AM and sets 9 hours, 56 minutes later, at 4:50 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The chance that a given day will be muggy at Catalina Airport is essentially constant during October, remaining within 1% of 1% throughout.
For reference, on August 28, the muggiest day of the year, there are muggy conditions 3% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Catalina Airport is essentially constant during October, remaining within 0.1 miles per hour of 4.1 miles per hour throughout.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 5.3 miles per hour, while on August 5, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.
Average Wind Speed in October
Wind Direction in October
Catalina Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature at Catalina Airport is gradually decreasing during October, falling by 2°F, from 67°F to 65°F, over the course of the month.
Average Water Temperature in October
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy at Catalina Airport is decreasing during October, falling by 1.4 kWh, from 5.6 kWh to 4.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Catalina Airport are 33.404 deg latitude, -118.416 deg longitude, and 666 ft elevation.
The topography within 2 miles of Catalina Airport contains large variations in elevation, with a maximum elevation change of 2,008 feet and an average elevation above sea level of 938 feet. Within 10 miles also contains large variations in elevation (2,067 feet). Within 50 miles also contains large variations in elevation (2,802 feet).
The area within 2 miles of Catalina Airport is covered by shrubs (65%) and water (18%), within 10 miles by water (76%) and shrubs (14%), and within 50 miles by water (81%) and artificial surfaces (14%).
This report illustrates the typical weather at Catalina Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
Catalina Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to San Clemente Island, San Clemente Island NALF; Long Beach; Long Beach Airport; Jack Northrop Field/Hawthorne Municipal Airport; McDonnell Douglas Space Systems Heliport; Los Angeles International Airport; Santa Monica Municipal Airport; and John Wayne Airport-Orange County.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.