Average Weather in December in Agua Dulce California, United States
Daily high temperatures decrease by 4°F, from 61°F to 57°F, rarely falling below 47°F or exceeding 70°F. The lowest daily average high temperature is 57°F on December 24.
Daily low temperatures decrease by 3°F, from 39°F to 36°F, rarely falling below 28°F or exceeding 47°F. The lowest daily average low temperature is 36°F on December 26.
For reference, on August 2, the hottest day of the year, temperatures in Agua Dulce typically range from 66°F to 94°F, while on December 26, the coldest day of the year, they range from 36°F to 57°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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 December
The month of December in Agua Dulce experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 37% to 43%. The highest chance of overcast or mostly cloudy conditions is 43% on December 28.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 63% of the time.
For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on September 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Agua Dulce, the chance of a wet day over the course of December is increasing, starting the month at 11% and ending it at 16%.
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 2.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Agua Dulce is increasing, starting the month at 1.3 inches, when it rarely exceeds 3.0 inches or falls below 0.1 inches, and ending the month at 2.3 inches, when it rarely exceeds 6.0 inches or falls below 0.1 inches.
Average Monthly Rainfall in December
Over the course of December in Agua Dulce, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 51 minutes of daylight and the longest day is December 1, with 10 hours, 1 minute of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Agua Dulce is 6:41 AM on December 1 and the latest sunrise is 18 minutes later at 6:59 AM on December 31.
The earliest sunset is 4:42 PM on December 5 and the latest sunset is 10 minutes later at 4:53 PM on December 31.
Daylight saving time is observed in Agua Dulce during 2018, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:41 AM and sets 14 hours, 28 minutes later, at 8:09 PM, while on December 21, the shortest day of the year, it rises at 6:56 AM and sets 9 hours, 51 minutes later, at 4:46 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Agua Dulce is essentially constant during December, remaining around 0% throughout.
For reference, on August 29, the muggiest day of the year, there are muggy conditions 0% 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 December
The average hourly wind speed in Agua Dulce is gradually increasing during December, increasing from 8.6 miles per hour to 9.1 miles per hour over the course of the month.
For reference, on December 30, the windiest day of the year, the daily average wind speed is 9.1 miles per hour, while on September 5, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.
The highest daily average wind speed during December is 9.1 miles per hour on December 31.
Average Wind Speed in December
Wind Direction in December
Agua Dulce 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 Agua Dulce is gradually decreasing during December, falling by 2°F, from 61°F to 59°F, over the course of the month.
Average Water Temperature in December
The growing season in Agua Dulce typically lasts for 9.0 months (274 days), from around February 26 to around November 27, rarely starting before January 25 or after March 29, and rarely ending before November 9 or after December 19.
The month of December in Agua Dulce is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly decreasing from 42% to 3% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Agua Dulce are gradually increasing during December, increasing by 58°F, from 4,666°F to 4,723°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Agua Dulce is essentially constant during December, remaining within 0.2 kWh of 3.1 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.9 kWh on December 26.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Agua Dulce are 34.496 deg latitude, -118.326 deg longitude, and 2,638 ft elevation.
The topography within 2 miles of Agua Dulce contains very significant variations in elevation, with a maximum elevation change of 1,155 feet and an average elevation above sea level of 2,642 feet. Within 10 miles contains very significant variations in elevation (4,324 feet). Within 50 miles also contains extreme variations in elevation (10,023 feet).
The area within 2 miles of Agua Dulce is covered by shrubs (91%), within 10 miles by shrubs (89%), and within 50 miles by shrubs (57%) and artificial surfaces (16%).
This report illustrates the typical weather in Agua Dulce 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 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Agua Dulce.
For each station, the records are corrected for the elevation difference between that station and Agua Dulce 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 Agua Dulce is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Agua Dulce and a given station.
The stations contributing to this reconstruction are: Newhall (15%, 26 kilometers, southwest); Palmdale United States Air Force Plant 42 Airport (35%, 27 kilometers, northeast); General Wm J Fox Airfield (28%, 29 kilometers, north); Burbank Bob Hope Airport (9%, 33 kilometers, south); Mount Wilson (4.8%, 38 kilometers, southeast); and Sandberg (8%, 46 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .