Average Weather in December in Nellis Air Force Base Nevada, United States
Daily high temperatures decrease by 4°F, from 61°F to 57°F, rarely falling below 49°F or exceeding 69°F. The lowest daily average high temperature is 57°F on December 23.
Daily low temperatures decrease by 3°F, from 40°F to 36°F, rarely falling below 28°F or exceeding 49°F. The lowest daily average low temperature is 36°F on December 25.
For reference, on July 14, the hottest day of the year, temperatures in Nellis Air Force Base typically range from 80°F to 105°F, while on December 25, 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 Nellis Air Force Base experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 35% throughout the month.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 67% of the time.
For reference, on February 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 40%, while on June 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.
Cloud Cover Categories in December
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 Nellis Air Force Base, the chance of a wet day over the course of December is essentially constant, remaining around 7% throughout.
For reference, the year's highest daily chance of a wet day is 12% on February 22, and its lowest chance is 2% on June 19.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Nellis Air Force Base is essentially constant, remaining about 0.5 inches throughout, and rarely exceeding 2.0 inches.
Average Monthly Rainfall in December
Over the course of December in Nellis Air Force Base, the length of the day is essentially constant. The shortest day of the month is December 20, with 9 hours, 41 minutes of daylight and the longest day is December 1, with 9 hours, 52 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Nellis Air Force Base is 6:33 AM on December 1 and the latest sunrise is 18 minutes later at 6:51 AM on December 31.
The earliest sunset is 4:25 PM on December 5 and the latest sunset is 11 minutes later at 4:35 PM on December 31.
Daylight saving time is observed in Nellis Air Force Base during 2020, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 20, the longest day of the year, the Sun rises at 5:23 AM and sets 14 hours, 38 minutes later, at 8:00 PM, while on December 21, the shortest day of the year, it rises at 6:47 AM and sets 9 hours, 41 minutes later, at 4:29 PM.
Sunrise & Sunset with Twilight in December
The chance that a given day will be muggy in Nellis Air Force Base is essentially constant during December, remaining around 0% throughout.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 4% of the time, while on October 12, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Nellis Air Force Base is essentially constant during December, remaining within 0.1 miles per hour of 7.6 miles per hour throughout.
For reference, on April 25, the windiest day of the year, the daily average wind speed is 9.1 miles per hour, while on August 27, the calmest day of the year, the daily average wind speed is 7.0 miles per hour.
The highest daily average wind speed during December is 7.7 miles per hour on December 10.
Average Wind Speed in December
The hourly average wind direction in Nellis Air Force Base throughout December is predominantly from the north, with a peak proportion of 68% on December 30.
Wind Direction in December
The growing season in Nellis Air Force Base typically lasts for 9.9 months (300 days), from around February 4 to around November 30, rarely starting before January 8 or after February 26, and rarely ending before November 13 or after December 20.
The month of December in Nellis Air Force Base 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 48% to 7% 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 Nellis Air Force Base are gradually increasing during December, increasing by 61°F, from 6,602°F to 6,664°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Nellis Air Force Base is essentially constant during December, remaining within 0.1 kWh of 3.0 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.9 kWh on December 22.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Nellis Air Force Base are 36.246 deg latitude, -115.057 deg longitude, and 1,893 ft elevation.
The topography within 2 miles of Nellis Air Force Base contains only modest variations in elevation, with a maximum elevation change of 207 feet and an average elevation above sea level of 1,897 feet. Within 10 miles contains only modest variations in elevation (3,409 feet). Within 50 miles also contains extreme variations in elevation (11,201 feet).
The area within 2 miles of Nellis Air Force Base is covered by shrubs (51%) and bare soil (45%), within 10 miles by shrubs (77%) and artificial surfaces (13%), and within 50 miles by shrubs (91%).
This report illustrates the typical weather in Nellis Air Force Base 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Nellis Air Force Base.
For each station, the records are corrected for the elevation difference between that station and Nellis Air Force Base 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 Nellis Air Force Base is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Nellis Air Force Base and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .