Average Weather in October in Garden Grove California, United States
Daily high temperatures decrease by 4°F, from 80°F to 75°F, rarely falling below 68°F or exceeding 90°F.
Daily low temperatures decrease by 6°F, from 62°F to 55°F, rarely falling below 50°F or exceeding 66°F.
For reference, on August 26, the hottest day of the year, temperatures in Garden Grove typically range from 66°F to 83°F, while on December 27, the coldest day of the year, they range from 46°F to 67°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 in Garden Grove 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 42%, 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. In Garden Grove, 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 19, and its lowest chance is 0% on July 2.
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 in Garden Grove is gradually increasing, starting the month at 0.3 inches, when it rarely exceeds 0.9 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 in Garden Grove, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 60 minutes, implying an average daily decrease of 1 minute, 59 seconds, and weekly decrease of 13 minutes, 56 seconds.
The shortest day of the month is October 31, with 10 hours, 50 minutes of daylight and the longest day is October 1, with 11 hours, 50 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Garden Grove is 6:46 AM on October 1 and the latest sunrise is 24 minutes later at 7:10 AM on October 31.
The latest sunset is 6:35 PM on October 1 and the earliest sunset is 36 minutes earlier at 6:00 PM on October 31.
Daylight saving time is observed in Garden Grove during 2018, 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 5:41 AM and sets 14 hours, 24 minutes later, at 8:05 PM, while on December 21, the shortest day of the year, it rises at 6:52 AM and sets 9 hours, 54 minutes later, at 4:47 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
The chance that a given day will be muggy in Garden Grove is gradually decreasing during October, falling from 4% to 0% over the course of the month.
For reference, on August 28, the muggiest day of the year, there are muggy conditions 12% of the time, while on November 10, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
The average hourly wind speed in Garden Grove is gradually increasing during October, increasing from 5.4 miles per hour to 6.1 miles per hour over the course of the month.
For reference, on December 31, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on August 23, the calmest day of the year, the daily average wind speed is 5.1 miles per hour.
Average Wind Speed in October
Wind Direction in October
Garden Grove 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 in Garden Grove is gradually decreasing during October, falling by 2°F, from 68°F to 65°F, over the course of the month.
Average Water Temperature in October
Temperatures in Garden Grove are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in October
The average accumulated growing degree days in Garden Grove are rapidly increasing during October, increasing by 504°F, from 4,072°F to 4,576°F, over the course of the month.
Growing Degree Days in October
The average daily incident shortwave solar energy in Garden Grove is decreasing during October, falling by 1.4 kWh, from 5.7 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 Garden Grove are 33.774 deg latitude, -117.941 deg longitude, and 82 ft elevation.
The topography within 2 miles of Garden Grove is essentially flat, with a maximum elevation change of 72 feet and an average elevation above sea level of 85 feet. Within 10 miles is essentially flat (1,056 feet). Within 50 miles contains very significant variations in elevation (10,062 feet).
The area within 2 miles of Garden Grove is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (91%), and within 50 miles by water (37%) and shrubs (30%).
This report illustrates the typical weather in Garden Grove 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
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Garden Grove.
For each station, the records are corrected for the elevation difference between that station and Garden Grove according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Garden Grove is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Garden Grove and a given station.
The stations contributing to this reconstruction are: McDonnell Douglas Space Systems Heliport (30%, 10 kilometers, west); Fullerton Municipal Airport (26%, 11 kilometers, north); John Wayne Airport-Orange County (23%, 13 kilometers, southeast); and Fob Dwyer (22%, 13 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .