December Weather in Fort Bliss Texas, 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 31.
Daily low temperatures decrease by 4°F, from 37°F to 33°F, rarely falling below 23°F or exceeding 48°F.
For reference, on June 23, the hottest day of the year, temperatures in Fort Bliss typically range from 72°F to 97°F, while on January 6, the coldest day of the year, they range from 33°F to 57°F.
Average High and Low Temperature in December in Fort Bliss
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 in Fort Bliss
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The month of December in Fort Bliss experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 33% throughout the month.
The clearest day of the month is December 3, with clear, mostly clear, or partly cloudy conditions 69% of the time.
For reference, on August 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 38%, while on June 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 81%.
Cloud Cover Categories in December in Fort Bliss
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Fort Bliss, the chance of a wet day over the course of December is essentially constant, remaining around 9% throughout.
For reference, the year's highest daily chance of a wet day is 30% on August 1, and its lowest chance is 3% on March 19.
Probability of Precipitation in December in Fort Bliss
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 December in Fort Bliss is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.3 inches or falling below -0.0 inches.
Average Monthly Rainfall in December in Fort Bliss
Over the course of December in Fort Bliss, the length of the day is essentially constant. The shortest day of the month is December 21, with 10 hours, 4 minutes of daylight and the longest day is December 1, with 10 hours, 13 minutes of daylight.
Hours of Daylight and Twilight in December in Fort Bliss
The earliest sunrise of the month in Fort Bliss is 6:48 AM on December 1 and the latest sunrise is 17 minutes later at 7:05 AM on December 31.
The earliest sunset is 5:01 PM on December 3 and the latest sunset is 11 minutes later at 5:12 PM on December 31.
Daylight saving time is observed in Fort Bliss during 2021, 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 6:00 AM and sets 14 hours, 14 minutes later, at 8:14 PM, while on December 21, the shortest day of the year, it rises at 7:01 AM and sets 10 hours, 4 minutes later, at 5:06 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December in Fort Bliss
The figure below presents a compact representation of key lunar data for December 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and 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.
Moon Rise, Set & Phases in December in Fort Bliss
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 in Fort Bliss is essentially constant during December, remaining around 0% throughout.
For reference, on August 4, the muggiest day of the year, there are muggy conditions 6% of the time, while on October 22, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December in Fort Bliss
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 in Fort Bliss is essentially constant during December, remaining within 0.1 miles per hour of 8.1 miles per hour throughout.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 11.0 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.
The lowest daily average wind speed during December is 8.0 miles per hour on December 17.
Average Wind Speed in December in Fort Bliss
The hourly average wind direction in Fort Bliss throughout December is predominantly from the west, with a peak proportion of 43% on December 6.
Wind Direction in December in Fort Bliss
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season in Fort Bliss typically lasts for 8.3 months (254 days), from around March 8 to around November 17, rarely starting before February 13 or after April 3, and rarely ending before October 29 or after December 5.
The month of December in Fort Bliss is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season decreasing from 17% to -0% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in December in Fort Bliss
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
The average accumulated growing degree days in Fort Bliss are gradually increasing during December, increasing by 76°F, from 6,001°F to 6,077°F, over the course of the month.
Growing Degree Days in December in Fort Bliss
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 in Fort Bliss is essentially constant during December, remaining within 0.1 kWh of 3.6 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 3.4 kWh on December 23.
Average Daily Incident Shortwave Solar Energy in December in Fort Bliss
For the purposes of this report, the geographical coordinates of Fort Bliss are 31.814 deg latitude, -106.412 deg longitude, and 3,891 ft elevation.
The topography within 2 miles of Fort Bliss contains only modest variations in elevation, with a maximum elevation change of 141 feet and an average elevation above sea level of 3,895 feet. Within 10 miles contains only modest variations in elevation (3,524 feet). Within 50 miles also contains extreme variations in elevation (5,423 feet).
The area within 2 miles of Fort Bliss is covered by shrubs (85%) and artificial surfaces (10%), within 10 miles by shrubs (74%) and artificial surfaces (23%), and within 50 miles by shrubs (85%).
This report illustrates the typical weather in Fort Bliss, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Fort Bliss.
For each station, the records are corrected for the elevation difference between that station and Fort Bliss 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 Fort Bliss is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Fort Bliss and a given station.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports 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.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.