Weather in Key West in March 2019
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These peak periods are reflected in green. Find the based on the weather.
The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions northeast, southeast, southwest, and northwest. The seasonal minimum is 23°C. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.
Key West Weather in March - Time zones for aiports and weather stations are provided by.
The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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. The month of March in Key West experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 30% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 27% on March 6. The clearest day of the month is March 6, with clear, mostly clear, or partly cloudy conditions 73% of the time. For reference, on June 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on March 6, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%. A wet day is one with at least 0. In Key West, the chance of a wet day over the course of March is essentially constant, remaining around 14% throughout. For reference, the year's highest daily chance of a wet day is 59% on September 16, and its lowest chance is 12% on March 20. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed both rain and snow fell in the same day. Rainfall 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 March in Key West is essentially constant, remaining about 1. The lowest average 31-day accumulation is 1. Over the course of March in Key West, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 43 minutes, implying an average daily increase of 1 minute, 26 seconds, and weekly increase of 10 minutes, 3 seconds. The shortest day of the month is March 1, with 11 hours, 40 minutes of daylight and the longest day is March 31, with 12 hours, 23 minutes of daylight. The number of hours during which the Sun is visible black line. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night. The earliest sunrise of the month in Key West is 6:41 AM on March 10 and the latest sunrise is 59 minutes later at 7:40 AM on March 11. The earliest sunset is 6:29 PM on March 1 and the latest sunset is 1 hour, 13 minutes later at 7:42 PM on March 31. Daylight saving time DST starts at 3:00 AM on March 11, 2018, shifting sunrise and sunset to be an hour later. For reference, on June 21, the longest day of the year, the Sun rises at 6:39 AM and sets 13 hours, 40 minutes later, at 8:18 PM, while on December 21, the shortest day of the year, it rises at 7:06 AM and sets 10 hours, 37 minutes later, at 5:43 PM. The solar day over the course of March. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights civil, nautical, and astronomical , and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels. Humidity 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 Key West is rapidly increasing during March, rising from 47% to 61% over the course of the month. For reference, on July 3, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 29, the least muggy day of the year, there are muggy conditions 42% of the time. 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 Key West is essentially constant during March, remaining within 0. For reference, on November 7, the windiest day of the year, the daily average wind speed is 14. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions northeast, southeast, southwest, and northwest. Water Temperature Key West is located near a large body of water e. This section reports on the wide-area average surface temperature of that water. The average surface water temperature in Key West is gradually increasing during March, rising by 2°F, from 74°F to 76°F, over the course of the month. Temperatures in Key West are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year. The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season. 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 Key West are rapidly increasing during March, increasing by 692°F, from 1,178°F to 1,870°F, over the course of the month. 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 Key West is gradually increasing during March, rising by 0. For the purposes of this report, the geographical coordinates of Key West are 24. The topography within 2 miles of Key West is essentially flat, with a maximum elevation change of 10 feet and an average elevation above sea level of 2 foot. Within 10 miles is also essentially flat 10 feet. Within 50 miles is also essentially flat 16 feet. The area within 2 miles of Key West is covered by water 59% and artificial surfaces 37% , within 10 miles by water 95% , and within 50 miles by water 99%. Data Sources This report illustrates the typical weather in Key West 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 is only a single weather station, , in our network suitable to be used as a proxy for the historical temperature and dew point records of Key West. At a distance of 3 kilometers from Key West, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records. The station records are corrected for the elevation difference between the station and Key West according to the , and by the relative change present in the between the two locations. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. Other Data All data relating to the Sun's position e. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's. 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 , published by the Food and Agriculture Organization of the United Nations. Elevation data comes from the , published by NASA's Jet Propulsion Laboratory. Names, locations, and time zones of places and some airports come from the. Time zones for aiports and weather stations are provided by. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. Disclaimer 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.
This rainfall is typically spread over 5 days, although this may vary considerably. The solar transit will be at 12:11 pm. From June to September, the temperature normally never gets colder than 70 degrees. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions northeast, southeast, southwest, and northwest. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. The earliest sunrise of the month in Key West is 6:41 AM on March 10 and the latest sunrise is 59 minutes later at 7:40 AM on March 11. Seasonal average climate and temperature of Key West in march Check below seasonal norms These statistics are compiled from the weather statements earlier years of march. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in key west weather march the mean wind speed is less than 1.
