Average Weather in December in Inyokern California, United States
Daily high temperatures decrease by 5°F, from 62°F to 57°F, rarely falling below 48°F or exceeding 70°F. The lowest daily average high temperature is 57°F on December 25.
Daily low temperatures decrease by 3°F, from 34°F to 31°F, rarely falling below 22°F or exceeding 43°F. The lowest daily average low temperature is 31°F on December 27.
For reference, on July 19, the hottest day of the year, temperatures in Inyokern typically range from 71°F to 102°F, while on December 27, the coldest day of the year, they range from 31°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 Inyokern experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 35% to 39%. The highest chance of overcast or mostly cloudy conditions is 40% on December 29.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 65% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 42%, 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 Inyokern, the chance of a wet day over the course of December is gradually increasing, starting the month at 10% and ending it at 14%.
For reference, the year's highest daily chance of a wet day is 17% on February 21, and its lowest chance is 1% on June 23.
Over the course of December in Inyokern, the chance of a day with only rain increases from 9% to 13%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Inyokern is gradually increasing, starting the month at 0.8 inches, when it rarely exceeds 1.8 inches, and ending the month at 1.2 inches, when it rarely exceeds 2.9 inches or falls below 0.1 inches.
Average Monthly Rainfall in December
Over the course of December in Inyokern, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 45 minutes of daylight and the longest day is December 1, with 9 hours, 55 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Inyokern is 6:42 AM on December 1 and the latest sunrise is 18 minutes later at 7:00 AM on December 31.
The earliest sunset is 4:37 PM on December 5 and the latest sunset is 10 minutes later at 4:48 PM on December 31.
Daylight saving time is observed in Inyokern 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 5:35 AM and sets 14 hours, 34 minutes later, at 8:10 PM, while on December 21, the shortest day of the year, it rises at 6:57 AM and sets 9 hours, 45 minutes later, at 4:41 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Inyokern is essentially constant during December, remaining around 0% throughout.
For reference, on July 14, 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 Inyokern is essentially constant during December, remaining within 0.1 miles per hour of 7.1 miles per hour throughout.
For reference, on June 10, the windiest day of the year, the daily average wind speed is 9.3 miles per hour, while on January 10, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.
The highest daily average wind speed during December is 7.2 miles per hour on December 10.
Average Wind Speed in December
Wind Direction in December
The growing season in Inyokern typically lasts for 8.0 months (243 days), from around March 15 to around November 14, rarely starting before February 12 or after April 12, and rarely ending before October 27 or after December 1.
The month of December in Inyokern 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 11% to -0% 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 Inyokern are gradually increasing during December, increasing by 58°F, from 5,634°F to 5,692°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Inyokern is essentially constant during December, remaining within 0.1 kWh of 3.1 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.9 kWh on December 25.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Inyokern are 35.647 deg latitude, -117.813 deg longitude, and 2,457 ft elevation.
The topography within 2 miles of Inyokern contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 2,442 feet. Within 10 miles contains only modest variations in elevation (4,478 feet). Within 50 miles also contains extreme variations in elevation (11,024 feet).
The area within 2 miles of Inyokern is covered by shrubs (100%), within 10 miles by shrubs (92%), and within 50 miles by shrubs (83%).
This report illustrates the typical weather in Inyokern 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Inyokern.
For each station, the records are corrected for the elevation difference between that station and Inyokern 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 Inyokern is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Inyokern and a given station.
The stations contributing to this reconstruction are: Ridgecrest Community Hospital Heliport (86%, 12 kilometers, northeast); Mojave Airport (7%, 71 kilometers, southwest); and Edwards, Edwards Air Force Auxiliary North Base (7%, 74 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .