Joshua Tree weather in December is average.
The high temperature on a daily basis decreases by 4F, from 62 to 58 to 48 and 70 to 70.On December 24 the high temperature was 57F.
The daily low temperature decreases by 3F from 39 to 36.On December 26 the temperature was 35F.
On July 15, the hottest day of the year, temperatures in Joshua Tree typically range from 73 to 99F, while on December 26, the coldest day, they are usually between 35 and 57 F.
The figure below shows the hourly average temperatures for the quarter of the year that ended in December.The day is horizontal, the hour is vertical, and the color is the average temperature for that hour.
The foreign place with the most similar temperatures to Joshua Tree is Algeria.
The month of December in Joshua Tree is characterized by constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 35%.
The clearest day of the month is December 1 with mostly clear or partly cloudy conditions.
On February 20, the cloudiest day of the year, there is a 40% chance of overcast or mostly cloudy conditions, while on September 18, the clearest day, the chance is 89%.
A wet day has at least 0.04 inches of precipitation.Over the course of December in Joshua Tree, the chance of a wet day is gradually increasing, starting the month at 7% and ending at 10%.
The highest daily chance of a wet day is 12% on February 21, and the lowest is 1% on June 14.
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.
During December in Joshua Tree, the average sliding 31 day rainfall is gradually increasing, starting the month at 0.5 inches and ending at 0.9 inches when it rarely exceeds 3.0 inches.
The length of the day in Joshua Tree is constant over the course of December.The longest day of the month is December 1, with 10 hours, 3 minutes of daylight.
On December 1st, the earliest sunrise of the month is 6:33 AM and on December 31st it is 18 minutes later.
On December 4, the earliest sunset is 4:35 PM and the latest is 4:46 PM.
Daylight saving time in Joshua Tree doesn't start or end until December, so the entire month is in standard time.
On June 21, the longest day of the year, the Sun rises at 5:34 AM and sets 14 hours, 26 minutes later, at 8:00 PM, while on December 21, it is the shortest day, with the sun setting at 6:47 AM.
There is a representation of key lunar data for December 2021.The day is horizontal, the hour is vertical, and the colored areas are when the moon is above the horizon.The blue and gray bars show the phases of the Moon.The companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon, and the label associated with each bar indicates the date and time that the phase is obtained.
The humidity comfort level is based on whether perspiration will evaporate from the skin, thereby cooling the body.Lower and higher dew points feel different.Dew point tends to change more slowly than temperature, so while the temperature may drop at night, a muggy day is typically followed by a humid night.
During December, there is a constant chance that a day in Joshua Tree will be humid.
On August 24, the muggiest day of the year, there are 4% of humid days, while on October 13, the least humid day, it's not humid at all.
The wide-area hourly average wind speed and direction is 10 meters above the ground.instantaneous wind speed and direction vary more widely than hourly averages, and the wind experienced at any given location is highly dependent on local topography and other factors.
During the month of December, the average hourly wind speed in Joshua Tree is essentially constant.
The windiest day of the year is on April 26, with an average wind speed of 9.3 miles per hour, while the calmest day is September 5.
The hourly average wind direction in Joshua Tree is mostly from the north in December.
For the purposes of this report, we define the growing season as the longest continuous period of non-freezing temperatures in the Northern Hemisphere from July 1 until June 30.
The growing season in Joshua Tree usually lasts for nine months from February 14 to November 29 and rarely starts before January 12 or after March 10.
The month of December in Joshua Tree is more likely than not not fully outside of the growing season, with the chance that a day is in the season rapidly decreasing from 47% to 7% over the month.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development and are defined as the integral of warmth above a base temperature.The report uses a cap of 86F and a base of 50.
Over the course of the month of December, the accumulated growing degree days in Joshua Tree are gradually increasing.
The total daily incident short wave solar energy reaching the surface of the ground over a wide area is taken into account in this section.There are two types of radiation: visible light and ultraviolet radiation.
During December, the average daily incident shortwave solar energy in Joshua Tree is essentially constant, remaining within 0.1 kWh of 3.3 kWh.
On December 22, the lowest day of the month, short wave solar energy was 3.1 kWh.
The geographical coordinates of Joshua Tree are 34.135 degrees latitude, -116.313 degrees longitude, and 2,730 feet elevation.
There is a maximum elevation change of 1,086 feet and an average elevation above sea level of 2,894 feet within 2 miles of Joshua Tree.There are significant variations in elevation within 10 miles.Extreme variations in elevation can be found within 50 miles.
Within 2 miles of Joshua Tree, the area is covered by shrubs, shrubs and bare soil.
An analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016 shows the typical weather in Joshua Tree.
Two weather stations are close enough to contribute to our estimation of the temperature in Joshua Tree.
The records for each station are changed for the elevation difference between that station and Joshua Tree according to the International Standard Atmosphere and the relative change in the MERRA-2 satellite-era reanalysis between the two locations.
The weighted average of individual contributions from each station is used to calculate the estimated value at Joshua Tree.
The stations that are contributing to the reconstruction are Twenty-Nine Palms, Marine Corps Air-Ground Combat Center and Palm Springs International Airport.
The data relating to the Sun's position is computed using formulas from a book.
Clouds, precipitation, wind speed and direction are all data 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.
The Global Land Cover SHARE database is published by the Food and Agriculture Organization of the United Nations.
The data comes from the Shuttle Radar Topography Mission.
The geographical database contains the names, locations, and time zones of airports.
National Geographic and other data are included in the maps.
The information on this site is not guaranteed to be accurate or suitable for any purpose.Weather data is prone to errors.We don't assume responsibility for the decisions made on the basis of the site's content.