The chance that a given day will be muggy in Los Angeles is gradually decreasing during September, falling from 5% to 2% over the course of the month. The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands. When you pay you will be supplied with an ATOL Certificate. The average hourly temperature, color coded into bands. For reference, on June 20, the longest day of the year, the Sun rises at 5:41 AM and sets 14 hours, 26 minutes later, at 8:07 PM, while on December 21, the shortest day of the year, it rises at 6:54 AM and sets 9 hours, 53 minutes later, at 4:47 PM. For each station, the records are corrected for the elevation difference between that station and Los Angeles according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Geographical influences. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. This report illustrates the typical weather in Los Angeles, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. We provide day and night temperature, sunshine hours, sea temperature and rainfall averages for Los Angeles in September We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. 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, 51 minutes of daylight. You’re also close to the National History Museum and the Getty Centre, which gives you the opportunity to soak up some culture during your time away. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. Last 2 weeks of weather In some years, a temperature of 100 °F (38 °C) or more can occur briefly during September. Months with the highest relative humidity are July and August (76.6%). 78 F Bob Hope Airport Station | Report. For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on September 6, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%. To hear our news first and sign up to our future promotions enter your email address here. For reference, the year's highest daily chance of a wet day is 21% on February 20, and its lowest chance is 0% on July 16. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. The black line is the percentage chance that a given day is within the growing season. The average surface water temperature in Los Angeles is essentially constant during September, remaining within 1°F of 68°F throughout. Daily high temperatures decrease by 3°F, from 84°F to 81°F, rarely falling below 73°F or exceeding 93°F. 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. 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. The weather in Los Angeles in September is very similar to the summer with high temperatures, few showers and low humidity levels. Average Weather in September in Los Angeles California, United States. The hourly average wind direction in Los Angeles throughout September is predominantly from the west, with a peak proportion of 38% on September 4. For the purposes of this report, the geographical coordinates of Los Angeles are 34.052 deg latitude, -118.244 deg longitude, and 289 ft elevation. Hello. 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. Please see our booking conditions for further information or for more information about financial protection and the ATOL Certificate go to: www.caa.co.uk, Thomas Cook: UK Nederland België Belgique, Foreign, Commonwealth and Development Office. You’ll have 12 hours of sunlight per day that’s only interrupted when it rains. Los Angeles is located near a large body of water (e.g., ocean, sea, or large lake). What’s the weather like in Los Angeles in September? For reference, on August 24, the hottest day of the year, temperatures in Los Angeles typically range from 66°F to 85°F, while on December 24, the coldest day of the year, they range from 48°F to 67°F. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year. Dispersing crowds and cooling weather (average temps hover in the high 70s and low 80s) make Los Angeles a much more manageable vacation spot. The estimated value at Los Angeles is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Los Angeles and a given station. 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. support@__remove_this_part__weatherspark.com. 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. Daily high temperatures decrease by 3°F, from 84°F to 81°F, rarely falling below 73°F or exceeding 93°F. In Los Angeles, the chance of a wet day over the course of September is gradually increasing, starting the month at 1% and ending it at 3%. 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 percentage of time spent at various humidity comfort levels, categorized by dew point. Daylight saving time is observed in Los Angeles during 2020, but it neither starts nor ends during September, so the entire month is in daylight saving time. Within 50 miles contains large variations in elevation (10,062 feet). 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. Typically every day in September warms to over 70 °F (21 °C) in Los Angeles. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The month with the highest UV index is July (UV index 11). The shaded overlays indicate night and civil twilight. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. This section reports on the wide-area average surface temperature of that water. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The city averages 5 days this month when the thermometer reaches into the 90s °F (over 32 °C). September weather forecast for Los Angeles, California. The organization has logged weather data for over a century and reported that year-to-date global temperatures are running second highest in the 141-year climate record. For reference, on August 3, the muggiest day of the year, there are muggy conditions 7% of the time, while on November 9, the least muggy day of the year, there are muggy conditions 0% of the time. The solar day over the course of September. Daytime temperatures usually reach 28°C in Los Angeles in September with moderate heat and humidity, falling to 17°C at night. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. 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. Within 10 miles contains only modest variations in elevation (2,602 feet). The warmest month (with the highest average high temperature) is August (29.1°C). For reference, on December 30, the windiest day of the year, the daily average wind speed is 8.7 miles per hour, while on August 12, the calmest day of the year, the daily average wind speed is 5.2 miles per hour. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. 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. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The rain usually falls on just one day of the month with an average rainfall of just 2mm. The month with least sunshine is December (Average sunshine: 7.1h). Get Los Angeles typical weather in September. 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 earliest sunrise of the month in Los Angeles is 6:26 AM on September 1 and the latest sunrise is 20 minutes later at 6:47 AM on September 30. Coronavirus - For the latest travel advice please check the Foreign, Commonwealth and Development Office. The month of September in Los Angeles experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 11% throughout the month. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. Driest months (with the lowest rainfall) are June and July (1mm). In September, in Los Angeles, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 63.1°F (17.3°C). The figure below presents a compact representation of key lunar data for September 2020. Shortwave radiation includes visible light and ultraviolet radiation. The latest sunset is 7:17 PM on September 1 and the earliest sunset is 40 minutes earlier at 6:37 PM on September 30. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The month with the lowest relative humidity is December (62.9%). The thin dotted lines are the corresponding average perceived temperatures. The month with the lowest average high temperature is December (19.8°C). °F. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The average sliding 31-day rainfall during September in Los Angeles is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 1.0 inches. It’s a great time to visit LA because the sun is always shining and there’s an upbeat atmosphere to the city. The thin dotted line is the corresponding average liquid-equivalent snowfall. It’s a great time to visit LA because the sun is always shining and there’s an upbeat atmosphere to the city. There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Los Angeles.
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