Average Weather in September in Edwards Air Force Base California, United States
Daily high temperatures decrease by 9°F, from 95°F to 86°F, rarely falling below 75°F or exceeding 102°F.
Daily low temperatures decrease by 9°F, from 63°F to 54°F, rarely falling below 45°F or exceeding 70°F.
For reference, on July 26, the hottest day of the year, temperatures in Edwards Air Force Base typically range from 68°F to 99°F, while on December 30, the coldest day of the year, they range from 31°F to 57°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September
The month of September in Edwards Air Force Base experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 12% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 10% on September 7.
The clearest day of the month is September 7, with clear, mostly clear, or partly cloudy conditions 90% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, 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 September
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 Edwards Air Force Base, the chance of a wet day over the course of September is essentially constant, remaining around 3% throughout.
For reference, the year's highest daily chance of a wet day is 17% on February 20, and its lowest chance is 0% on June 24.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Edwards Air Force Base is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.7 inches.
Average Monthly Rainfall in September
Over the course of September in Edwards Air Force Base, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 2 minutes, implying an average daily decrease of 2 minutes, 9 seconds, and weekly decrease of 15 minutes, 4 seconds.
The shortest day of the month is September 30, with 11 hours, 51 minutes of daylight and the longest day is September 1, with 12 hours, 54 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Edwards Air Force Base is 6:24 AM on September 1 and the latest sunrise is 21 minutes later at 6:45 AM on September 30.
The latest sunset is 7:18 PM on September 1 and the earliest sunset is 41 minutes earlier at 6:36 PM on September 30.
Daylight saving time is observed in Edwards Air Force Base during 2018, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:38 AM and sets 14 hours, 30 minutes later, at 8:08 PM, while on December 21, the shortest day of the year, it rises at 6:55 AM and sets 9 hours, 49 minutes later, at 4:44 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Edwards Air Force Base is essentially constant during September, remaining around 0% throughout.
For reference, on July 16, 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 September
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Edwards Air Force Base is essentially constant during September, remaining within 0.1 miles per hour of 7.5 miles per hour throughout.
For reference, on April 25, the windiest day of the year, the daily average wind speed is 10.0 miles per hour, while on September 17, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.
The lowest daily average wind speed during September is 7.4 miles per hour on September 17.
Average Wind Speed in September
Wind Direction in September
Edwards Air Force Base is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Edwards Air Force Base is essentially constant during September, remaining within 1°F of 68°F throughout.
Average Water Temperature in September
The growing season in Edwards Air Force Base typically lasts for 7.5 months (230 days), from around March 22 to around November 7, rarely starting before February 14 or after April 16, and rarely ending before October 20 or after November 25.
The month of September in Edwards Air Force Base is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Edwards Air Force Base are rapidly increasing during September, increasing by 670°F, from 3,748°F to 4,417°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Edwards Air Force Base is decreasing during September, falling by 1.3 kWh, from 7.1 kWh to 5.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Edwards Air Force Base are 34.916 deg latitude, -117.935 deg longitude, and 2,382 ft elevation.
The topography within 2 miles of Edwards Air Force Base contains only modest variations in elevation, with a maximum elevation change of 351 feet and an average elevation above sea level of 2,390 feet. Within 10 miles contains only modest variations in elevation (899 feet). Within 50 miles contains very significant variations in elevation (9,249 feet).
The area within 2 miles of Edwards Air Force Base is covered by shrubs (98%), within 10 miles by shrubs (71%) and bare soil (28%), and within 50 miles by shrubs (82%).
This report illustrates the typical weather in Edwards 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Edwards Air Force Base.
For each station, the records are corrected for the elevation difference between that station and Edwards 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 Edwards 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 Edwards Air Force Base and a given station.
The stations contributing to this reconstruction are: Edwards Air Force Base (55%, 7 kilometers, east); Edwards, Edwards Air Force Auxiliary North Base (28%, 10 kilometers, northeast); Mojave Airport (6%, 26 kilometers, northwest); General Wm J Fox Airfield (5%, 32 kilometers, southwest); and Palmdale United States Air Force Plant 42 Airport (4.8%, 35 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .