Template: Louisville, Kentucky weatherbox

{{Weather box
|location = [[Louisville International Airport]], Kentucky (1991–2020 normals,{{efn|Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.}} extremes 1872–present{{efn|Official records for Louisville were kept at the Weather Bureau Office from August 1872 to June 1945, [[Bowman Field (Kentucky)|Bowman Field]] from July 1945 to November 1947, Louisville Int'l from December 1947 to October 1995, the Weather Forecast Office ({{coord|38.1150|N|85.6450|W|type:landmark_region:US-KY}}) from November 1995 to December 2005, and again at Louisville Int'l since January 2006. For more information, see [http://threadex.rcc-acis.org Threadex]}})
|collapsed = Y
|single line = Y
|Jan record high F = 77
|Feb record high F = 82
|Mar record high F = 88
|Apr record high F = 91
|May record high F = 98
|Jun record high F = 105
|Jul record high F = 107
|Aug record high F = 105
|Sep record high F = 104
|Oct record high F = 97
|Nov record high F = 85
|Dec record high F = 76
|year record high F = 107
|Jan avg record high F = 65.2
|Feb avg record high F = 70.4
|Mar avg record high F = 77.8
|Apr avg record high F = 84.1
|May avg record high F = 89.0
|Jun avg record high F = 93.6
|Jul avg record high F = 95.7
|Aug avg record high F = 95.6
|Sep avg record high F = 92.9
|Oct avg record high F = 85.4
|Nov avg record high F = 75.1
|Dec avg record high F = 67.0
|year avg record high F = 97.3
|Jan high F = 43.6
|Feb high F = 48.3
|Mar high F = 58.1
|Apr high F = 69.6
|May high F = 77.8
|Jun high F = 85.7
|Jul high F = 89.0
|Aug high F = 88.4
|Sep high F = 82.2
|Oct high F = 70.5
|Nov high F = 57.6
|Dec high F = 47.2
|year high F = 68.2
|Jan mean F = 35.7
|Feb mean F = 39.5
|Mar mean F = 48.4
|Apr mean F = 59.0
|May mean F = 68.3
|Jun mean F = 76.4
|Jul mean F = 79.9
|Aug mean F = 78.9
|Sep mean F = 72.0
|Oct mean F = 60.3
|Nov mean F = 48.5
|Dec mean F = 39.6
|year mean F = 58.9
|Jan low F = 27.8
|Feb low F = 30.7
|Mar low F = 38.6
|Apr low F = 48.5
|May low F = 58.7
|Jun low F = 67.2
|Jul low F = 70.8
|Aug low F = 69.5
|Sep low F = 61.9
|Oct low F = 50.1
|Nov low F = 39.4
|Dec low F = 32.1
|year low F = 49.6
|Jan avg record low F = 6.0
|Feb avg record low F = 11.4
|Mar avg record low F = 20.3
|Apr avg record low F = 31.7
|May avg record low F = 41.9
|Jun avg record low F = 53.6
|Jul avg record low F = 60.5
|Aug avg record low F = 58.7
|Sep avg record low F = 46.9
|Oct avg record low F = 33.7
|Nov avg record low F = 23.1
|Dec avg record low F = 13.0
|year avg record low F = 3.3
|Jan record low F = −22
|Feb record low F = −19
|Mar record low F = −1
|Apr record low F = 21
|May record low F = 31
|Jun record low F = 42
|Jul record low F = 49
|Aug record low F = 45
|Sep record low F = 33
|Oct record low F = 23
|Nov record low F = −1
|Dec record low F = −15
|year record low F = -22
|precipitation colour = green
|Jan precipitation inch = 3.39
|Feb precipitation inch = 3.41
|Mar precipitation inch = 4.60
|Apr precipitation inch = 4.80
|May precipitation inch = 5.18
|Jun precipitation inch = 4.27
|Jul precipitation inch = 4.05
|Aug precipitation inch = 3.71
|Sep precipitation inch = 3.66
|Oct precipitation inch = 3.72
|Nov precipitation inch = 3.42
|Dec precipitation inch = 4.13
|year precipitation inch = 48.34
|Jan snow inch = 4.5
|Feb snow inch = 4.1
|Mar snow inch = 2.1
|Apr snow inch = 0.1
|May snow inch = 0.0
|Jun snow inch = 0.0
|Jul snow inch = 0.0
|Aug snow inch = 0.0
|Sep snow inch = 0.0
|Oct snow inch = 0.1
|Nov snow inch = 0.3
|Dec snow inch = 2.2
|year snow inch = 13.4
|unit precipitation days = 0.01 in
|Jan precipitation days = 11.2
|Feb precipitation days = 10.4
|Mar precipitation days = 12.1
|Apr precipitation days = 11.9 
|May precipitation days = 12.6
|Jun precipitation days = 10.5
|Jul precipitation days = 10.2
|Aug precipitation days = 8.2
|Sep precipitation days = 7.9
|Oct precipitation days = 7.9 
|Nov precipitation days = 9.8
|Dec precipitation days = 11.8
|year precipitation days = 124.5
|unit snow days = 0.1 in
|Jan snow days = 3.7
|Feb snow days = 3.7
|Mar snow days = 1.7
|Apr snow days = 0.1
|May snow days = 0.0
|Jun snow days = 0.0
|Jul snow days = 0.0
|Aug snow days = 0.0
|Sep snow days = 0.0
|Oct snow days = 0.0
|Nov snow days = 0.6
|Dec snow days = 2.5
|year snow days = 12.3
|Jan humidity = 68.6
|Feb humidity = 68.1
|Mar humidity = 64.0
|Apr humidity = 61.5
|May humidity = 67.2
|Jun humidity = 68.9
|Jul humidity = 70.9
|Aug humidity = 71.7
|Sep humidity = 72.9
|Oct humidity = 69.9
|Nov humidity = 69.4
|Dec humidity = 70.2
|year humidity = 68.6
|Jan sun = 140.5
|Feb sun = 148.9
|Mar sun = 188.6
|Apr sun = 221.1
|May sun = 263.4
|Jun sun = 288.9
|Jul sun = 293.6
|Aug sun = 272.6
|Sep sun = 234.3
|Oct sun = 208.5
|Nov sun = 135.7
|Dec sun = 118.3
|Jan percentsun = 46
|Feb percentsun = 49
|Mar percentsun = 51 
|Apr percentsun = 56 
|May percentsun = 60
|Jun percentsun = 65
|Jul percentsun = 65
|Aug percentsun = 65
|Sep percentsun = 63
|Oct percentsun = 60 
|Nov percentsun = 45
|Dec percentsun = 40
|year percentsun = 56
| Jan uv  = 1.8
| Feb uv  = 2.8
| Mar uv  = 4.6
| Apr uv  = 6.5
| May uv  = 8.0
| Jun uv  = 8.9
| Jul uv  = 9.1
| Aug uv  = 8.2
| Sep uv  = 6.4
| Oct uv  = 4.0
| Nov uv  = 2.3
| Dec uv  = 1.6
| year uv = 5.3
|source 1 = NOAA (relative humidity and sun 1961–1990)<ref name = "NOAA TXT">{{cite web 
|url=https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00093821&format=pdf 
|publisher=National Oceanic and Atmospheric Administration |title=Station Name: KY Louisville Intl. AP 
|work=U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020) |access-date=June 2, 2021}}</ref><ref name = NOAA >
{{cite web
|url=https://w2.weather.gov/climate/xmacis.php?wfo=lmk
|title = NowData – NOAA Online Weather Data
|publisher = [[National Oceanic and Atmospheric Administration]]
|access-date = June 2, 2021}}</ref><ref name=noaasun>
{{cite web
| url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72423.TXT
| title = WMO Climate Normals for Louisville/Standiford Field KY 1961–1990
| access-date = March 11, 2014
| publisher = National Oceanic and Atmospheric Administration
}}</ref><!--<ref name = "Percent Sunshine" >
{{cite web
| url = http://www.ncdc.noaa.gov/oa/climate/online/ccd/pctpos.txt
| title = Average Percent Sunshine through 2009
| access-date = November 29, 2012
| publisher = [[National Climatic Data Center]]
}}</ref>-->
|source 2 = UV Index Today (1995 to 2022)<ref name="UVIT">{{cite web |url=https://www.uvindextoday.com/usa/kentucky/jefferson-county/louisville-uv-index/historical-data |title=Historical UV Index Data - Louisdville, KY |publisher=UV Index Today |access-date=April 21, 2023 }}</ref>
}}<noinclude>{{notelist}}{{reflist}} [[Category:United States weatherbox templates]]</noinclude>