Average Weather in December in Greenacres California, United States
In Greenacres, the month of December is characterized by falling daily high temperatures, with daily highs decreasing by 5°F, from 63°F to 58°F over the course of the month, and rarely exceeding 71°F or dropping below 49°F.
Daily low temperatures increase by 5°F, from 43°F to 48°F, rarely falling below 35°F or exceeding 57°F.
For reference, on July 26, the hottest day of the year, temperatures in Greenacres typically range from 72°F to 99°F, while on January 31, the coldest day of the year, they range from 43°F to 63°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 Greenacres experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 39% to 44%. The highest chance of overcast or mostly cloudy conditions is 45% on December 28.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 61% 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 August 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Greenacres, the chance of a wet day over the course of December is very rapidly decreasing, starting the month at 12% and ending it at 3%.
For reference, the year's highest daily chance of a wet day is 22% on February 20, and its lowest chance is 0% on July 2.
Probability of Precipitation in December
Over the course of December in Greenacres, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 46 minutes of daylight and the longest day is December 1, with 9 hours, 57 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Greenacres is 6:47 AM on December 1 and the latest sunrise is 18 minutes later at 7:05 AM on December 31.
The earliest sunset is 4:43 PM on December 5 and the latest sunset is 11 minutes later at 4:54 PM on December 31.
Daylight saving time is observed in Greenacres during 2017, 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, 33 minutes later, at 8:14 PM, while on December 21, the shortest day of the year, it rises at 7:01 AM and sets 9 hours, 46 minutes later, at 4:47 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Greenacres is essentially constant during December, remaining around 0% throughout.
For reference, on August 29, the muggiest day of the year, there are muggy conditions 1% of the time, while on November 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 Greenacres is essentially constant during December, remaining within 0.1 miles per hour of 2.8 miles per hour throughout.
For reference, on May 31, the windiest day of the year, the daily average wind speed is 3.7 miles per hour, while on October 24, the calmest day of the year, the daily average wind speed is 2.5 miles per hour.
The highest daily average wind speed during December is 2.9 miles per hour on December 23.
Average Wind Speed in December
Wind Direction in December
The average daily incident shortwave solar energy in Greenacres is essentially constant during December, remaining within 0.1 kWh of 2.9 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.7 kWh on December 26.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Greenacres are 35.383 deg latitude, -119.110 deg longitude, and 381 ft elevation.
The topography within 2 miles of Greenacres is essentially flat, with a maximum elevation change of 49 feet and an average elevation above sea level of 381 feet. Within 10 miles is essentially flat (850 feet). Within 50 miles contains very significant variations in elevation (8,629 feet).
The area within 2 miles of Greenacres is covered by artificial surfaces (46%), shrubs (35%), and cropland (15%), within 10 miles by cropland (48%) and artificial surfaces (20%), and within 50 miles by grassland (37%) and cropland (28%).
This report illustrates the typical weather in Greenacres 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Greenacres.
For each station, the records are corrected for the elevation difference between that station and Greenacres 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 Greenacres is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Greenacres and a given station.
The stations contributing to this reconstruction are: Meadows Field (94%, 8 kilometers, northeast); Sandberg (1.2%, 79 kilometers, southeast); Santa Ynez Airport (1.6%, 123 kilometers, southwest); Santa Barbara Municipal Airport (1.6%, 126 kilometers, southwest); and Paso Robles Municipal Airport (1.3%, 141 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .