The black line is the percentage chance that a given day is within the growing season. The calmer time of year lasts for 5.5 months, from May 13 to October 28. The windier part of the year lasts for 6.5 months, from October 28 to May 13, with average wind speeds of more than 4.5 miles per hour. The transitions to and from daylight saving time are indicated by the 'DST' labels. See the Chance of Snow Storms for any location. Shortwave radiation includes visible light and ultraviolet radiation. The darker period of the year lasts for 2.9 months, from November 10 to February 8, with an average daily incident shortwave energy per square meter below 3.2 kWh. high : Average high in ºF - Av.low : Average low in ºF - Av. The percentage of time spent in various temperature bands. The length of the day in Louisville varies significantly over the course of the year. The cold season lasts for 2.9 months, from November 28 to February 25, with an average daily high temperature below 56°F. Privacy & Terms, Past Weather in Louisville, Kentucky, USA — Yesterday and Last 2 Weeks, * Reported 11 Oct 20:56 — 26 Oct 20:56, Louisville. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. 2019 Worldfest: Travel the world without leaving Louisville We assume no responsibility for any decisions made on the basis of the content presented on this site. MERRA-2 Modern-Era Retrospective Analysis. Weather data is prone to errors, outages, and other defects. 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). Louisville experiences some seasonal variation in monthly rainfall. Based on this score, the best time of year to visit Louisville for hot-weather activities is from late June to early September, with a peak score in the second week of August. Lower dew points feel drier and higher dew points feel more humid. The least rain falls around October 20, with an average total accumulation of 2.6 inches. This report illustrates the typical weather in Louisville, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter. The sliding 31-day liquid-equivalent quantity of snowfall in Louisville does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The brightest day of the year is June 17, with an average of 6.7 kWh. The cloudier part of the year begins around November 16 and lasts for 7.8 months, ending around July 11. 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. Weather by CustomWeather, © 2020. The snowy period of the year lasts for 6.7 months, from October 9 to April 30, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. 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. Generally speaking, if you live in the U.S., expect a much colder, wetter, and longer winter this year. Click on each chart for more information. The windiest day of the year is February 26, with an average hourly wind speed of 5.7 miles per hour. The thin dotted line is the corresponding average rainfall. 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 average hourly wind speed in Louisville experiences mild seasonal variation over the course of the year. The stations contributing to this reconstruction are: McGhee Tyson Airport (89%, 5.6 kilometers, east); Oak Ridge (10%, 28 kilometers, northwest); and Lovell Field (1.0%, 136 kilometers, southwest). The solar day over the course of the year 2020. : Days with precipitation - Hours sun. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. The chance of wet days in Louisville varies throughout the year. The estimated value at Louisville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Louisville and a given station. The hottest day of the year is July 20, with an average high of 88°F and low of 70°F. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. Station Data. In Louisville, the summers are long, hot, and muggy; the winters are short, very cold, and wet; and it is partly cloudy year round. The clearer part of the year in Louisville begins around July 11 and lasts for 4.2 months, ending around November 16. In this report, we use a base of 50°F and a cap of 86°F. The predominant average hourly wind direction in Louisville varies throughout the year. The average liquid-equivalent snowfall (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 draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Almanac fans: Your long wait is over! The figure below shows you a compact characterization of the entire year of hourly average temperatures. Rain falls throughout the year in Louisville. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 47% on July 8. The earliest sunrise is at 6:19 AM on June 12, and the latest sunrise is 1 hour, 39 minutes later at 7:58 AM on October 31. The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. 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. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The shaded overlays indicate night and civil twilight. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The earliest sunset is at 5:22 PM on December 4, and the latest sunset is 3 hours, 34 minutes later at 8:56 PM on June 28. Over the course of the year, the temperature typically varies from 31°F to 88°F and is rarely below 17°F or above 94°F. Winter Weather Forecast 2021 from The Old Farmer’s Almanac Light Winter for Many, Colder in the West. This year, "you can be the first one in line at the supermarket because you knew in advance because you read the almanac." Louisville experiences some seasonal variation in monthly liquid-equivalent snowfall. precipitation in Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ... © US Climate Data 2020 | version 3.0 | by Your Weather Service |, Past weather December 2019 incomplete - Missing data, Average precipitation in : Av. Monthly averages Louisville Longitude: -85.7585, Latitude: 38.2527 Average weather Louisville, KY - 40201. Louisville experiences extreme seasonal variation in the perceived humidity. 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. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

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