Louisville, Kentucky

===Climate===

Louisville has a [[humid subtropical climate]] ([[Köppen climate classification|Köppen]] ''Cfa''), typical of the [[Upper South]], and is located in [[Hardiness zone#United States hardiness zones (USDA scale)|USDA plant hardiness zones]] 6b and 7a.<ref name="hardiness zones">{{cite web |url=http://planthardiness.ars.usda.gov/PHZMWeb/InteractiveMap.aspx |title=USDA Plant Hardiness Zone Interactive Map |publisher=Planthardiness.ars.usda.gov |access-date=March 31, 2014 |archive-date=February 9, 2014 |archive-url=https://web.archive.org/web/20140209122445/http://planthardiness.ars.usda.gov/phzmweb/interactivemap.aspx |url-status=dead }}</ref> Springlike conditions typically begin in mid-to-late March, summer from mid-to-late-May to late September, with fall in the October–November period. Seasonal extremes in both temperature and precipitation are not uncommon during early spring and late fall; [[severe weather]] is not uncommon, with occasional [[tornado]] outbreaks in the region. Winter typically brings a mix of rain, sleet, and snow, with occasional heavy snowfall and icing. Louisville averages 4.5 days with low temperatures dipping to {{convert|10|°F|0}};<ref name = "NOAA TXT"/> the first and last freezes of the season on average fall on November{{nbsp}}2 and April{{nbsp}}5, respectively.<ref name = NOAA/> Summer is typically hazy, hot, and humid with long periods of {{convert|90|–|100|°F|°C|0}} temperatures and drought conditions at times. Louisville averages 38 days a year with high temperatures at or above {{convert|90|°F|0}}. The mean annual temperature is {{convert|58.2|°F|1}}, with an average annual snowfall of {{convert|12.7|in|cm|0}} and an average annual rainfall of {{convert|44.9|in|sigfig=3}}.

The wettest seasons are spring and summer, although rainfall is fairly constant year round. During the winter, particularly in January and February, several days of snow can be expected. January is the coldest month, with a mean temperature of {{convert|34.9|°F|1}}. July is the average hottest month with a mean of {{convert|79.3|°F|1}}.<ref>Climate information from [http://ols.nndc.noaa.gov/plolstore/plsql/olstore.prodspecific?prodnum=C00095-PUB-A0001#TABLES NOAA] {{webarchive|url=https://web.archive.org/web/20130904023736/http://ols.nndc.noaa.gov/plolstore/plsql/olstore.prodspecific?prodnum=C00095-PUB-A0001 |date=September 4, 2013 }}</ref> The highest recorded temperature was {{convert|107|°F|0}}, which last occurred on July 14, 1936, and the [[1994 North American cold wave|lowest recorded temperature]] was {{convert|−22|°F|0}} on January 19, 1994.<ref>Maximum and minimum temperatures from [https://web.archive.org/web/20110709042619/http://weather.yahoo.com/climo/USKY1096_c.html Yahoo! Weather]</ref> In 2012, Louisville had the fourth-hottest summer on record, with the temperature rising up to {{convert|106|°F|0}} in July and the June all-time monthly record high temperature being broken on two consecutive days.<ref name = NOAA/> As the city exemplifies the [[urban heat island]] effect, temperatures in commercial areas and in the industrialized areas along interstates are often higher than in the suburbs, often as much as {{convert|5|F-change|1}}.

{{Louisville, Kentucky weatherbox}}