Editing Knoxville, Tennessee (section)

===Climate===
Knoxville falls in the [[humid subtropical climate]] ([[Köppen climate classification|Köppen]]: ''Cfa'') zone. Summers are hot and humid, with the daily average temperature in July at {{cvt|78.4|F|1}}, and an average of 36 days per year with temperatures reaching {{cvt|90|F|0}}.<ref name="NOAA 90F">[http://lwf.ncdc.noaa.gov/oa/climate/online/ccd/max90temp.html NOAA] {{webarchive|url=https://web.archive.org/web/20061210082240/http://lwf.ncdc.noaa.gov/oa/climate/online/ccd/max90temp.html |date=December 10, 2006 }}, Mean Number of Days With Maximum Temperature 90 Degrees F or Higher.</ref> Winters are generally much cooler and less stable, with occasional small amounts of snow. January has a daily average temperature of {{cvt|38.2|F|1}}, with an average of 5 days<ref name=NOAA-K/> where the high remains at or below freezing.{{efn|In 1915, 1921, 1990, and 2013, no day the entire year remained at or below freezing.<ref name=NOAA-K/>}} The record high for Knoxville is {{cvt|105|F|0}} on [[Summer 2012 North American heat wave|June 30 and July 1, 2012]],<ref>Lance Coleman, "[http://www.knoxnews.com/news/2012/jun/30/knoxville-having-hottest-day-ever/ Knoxville Having Hottest Day Ever at 105 Degrees] {{Webarchive|url=https://web.archive.org/web/20120704044022/http://www.knoxnews.com/news/2012/jun/30/knoxville-having-hottest-day-ever/ |date=July 4, 2012 }}", ''Knoxville News Sentinel'', June 30, 2012. Retrieved: June 30, 2012.</ref> while the record low is {{cvt|-24|F|0}} on [[January 1985 Arctic outbreak|January 21, 1985]].<ref name="Knoxville Climate Page">{{cite web|url=http://www.srh.noaa.gov/mrx/?n=tysclimate|title=Knoxville Climate Page|access-date=April 18, 2016|archive-url=https://web.archive.org/web/20160304024909/http://www.srh.noaa.gov/mrx/?n=tysclimate|archive-date=March 4, 2016|url-status=live}}</ref> Annual precipitation averages just under {{cvt|52|in|sigfig=3}}, and normal seasonal snowfall is {{cvt|4.6|in|cm}}. The one-day record for snowfall is {{cvt|17.5|in|cm}}, which occurred on February 13, 1960.<ref>"[http://www.knoxnews.com/news/2014/feb/12/top-10-snowfalls-knoxville/?partner=popular Top 10 Snowfalls in Knoxville] {{Webarchive|url=https://web.archive.org/web/20140703054134/http://www.knoxnews.com/news/2014/feb/12/top-10-snowfalls-knoxville/?partner=popular |date=July 3, 2014 }}", ''Knoxville News Sentinel'', February 12, 2014.</ref>{{efn|This contributed to the winter of 1959−60 being the snowiest on record, with a total of {{cvt|56.7|in|cm}}. On the other extreme, five winters, most recently 2007−08, have recorded only a trace of snowfall.<ref name=NOAA-K/>}}
<section begin="weather box"/>{{Weather box<!--Infobox begins-->
|location=Knoxville ([[McGhee Tyson Airport]]), 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 1871–present{{efn|Official records for Knoxville kept January 1871 to February 1942 at downtown and at McGhee Tyson Airport since March 1942. For more information, see [http://threadex.rcc-acis.org Threadex]}}<!--Mandatory field.-->
|collapsed = 
|single line = Y
|Jan record high F = 77
|Feb record high F = 83
|Mar record high F = 88
|Apr record high F = 93
|May record high F = 96
|Jun record high F = 105
|Jul record high F = 105
|Aug record high F = 102
|Sep record high F = 103
|Oct record high F = 96
|Nov record high F = 85
|Dec record high F = 80
|year record high F = 105
|Jan avg record high F = 68.1
|Feb avg record high F = 71.7
|Mar avg record high F = 78.4
|Apr avg record high F = 84.5
|May avg record high F = 89.0
|Jun avg record high F = 93.1
|Jul avg record high F = 95.1
|Aug avg record high F = 94.0
|Sep avg record high F = 91.6
|Oct avg record high F = 84.0
|Nov avg record high F = 75.8
|Dec avg record high F = 69.1
|year avg record high F = 96.0
|Jan avg record low F = 11.6
|Feb avg record low F = 16.8
|Mar avg record low F = 22.6
|Apr avg record low F = 32.6
|May avg record low F = 41.4
|Jun avg record low F = 54.6
|Jul avg record low F = 61.4
|Aug avg record low F = 59.9
|Sep avg record low F = 48.3
|Oct avg record low F = 33.4
|Nov avg record low F = 24.0
|Dec avg record low F = 18.0
|year avg record low F = 9.0
|Jan high F = 48.2
|Feb high F = 52.8
|Mar high F = 61.4
|Apr high F = 71.2
|May high F = 78.9
|Jun high F = 85.7
|Jul high F = 88.4
|Aug high F = 87.8
|Sep high F = 82.5
|Oct high F = 71.7
|Nov high F = 60.0
|Dec high F = 51.0
|year high F = 70.0
|Jan mean F = 39.1
|Feb mean F = 42.9
|Mar mean F = 50.6
|Apr mean F = 59.6
|May mean F = 67.9
|Jun mean F = 75.3
|Jul mean F = 78.5
|Aug mean F = 77.6
|Sep mean F = 71.8
|Oct mean F = 60.3
|Nov mean F = 49.0
|Dec mean F = 41.9
|year mean F = 59.5
|Jan low F = 30.0
|Feb low F = 33.1
|Mar low F = 39.8
|Apr low F = 48.0
|May low F = 56.9
|Jun low F = 64.9
|Jul low F = 68.7
|Aug low F = 67.5
|Sep low F = 61.1
|Oct low F = 48.9
|Nov low F = 38.1
|Dec low F = 32.8
|year low F = 49.2
|Jan record low F = −24
|Feb record low F = −10
|Mar record low F = 1
|Apr record low F = 22
|May record low F = 32
|Jun record low F = 42
|Jul record low F = 49
|Aug record low F = 49
|Sep record low F = 35
|Oct record low F = 24
|Nov record low F =  5
|Dec record low F = −6
|year record low F = -24
<!--Total Precipitation-->
|precipitation colour= green
|Jan precipitation inch = 4.76
|Feb precipitation inch = 4.81
|Mar precipitation inch = 4.89
|Apr precipitation inch = 4.71
|May precipitation inch = 4.13
|Jun precipitation inch = 4.24
|Jul precipitation inch = 5.25
|Aug precipitation inch = 3.63
|Sep precipitation inch = 3.49
|Oct precipitation inch = 2.81
|Nov precipitation inch = 4.21
|Dec precipitation inch = 5.00
|year precipitation inch = 51.93
|Jan snow inch = 1.7
|Feb snow inch = 1.4
|Mar snow inch = 0.9
|Apr snow inch = 0.0 
|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 = 0.0
|Nov snow inch = 0.1
|Dec snow inch = 0.5
|year snow inch = 4.6
|unit precipitation days = 0.01 in
|Jan precipitation days = 11.5
|Feb precipitation days = 11.7
|Mar precipitation days = 12.7
|Apr precipitation days = 11.1
|May precipitation days = 11.1
|Jun precipitation days = 12.0
|Jul precipitation days = 11.6
|Aug precipitation days = 9.8
|Sep precipitation days = 7.8
|Oct precipitation days = 8.0
|Nov precipitation days = 9.4
|Dec precipitation days = 12.0
|year precipitation days = 128.7
|unit snow days = 0.1 in
|Jan snow days = 1.2
|Feb snow days = 1.3
|Mar snow days = 0.7
|Apr snow days = 0.0
|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 = 0.2
|Dec snow days = 0.6
|year snow days = 4.0
|Jan humidity = 71.7
|Feb humidity = 68.0
|Mar humidity = 64.8
|Apr humidity = 63.3
|May humidity = 70.8
|Jun humidity = 73.5
|Jul humidity = 75.7
|Aug humidity = 76.3
|Sep humidity = 76.1
|Oct humidity = 73.0
|Nov humidity = 71.8
|Dec humidity = 72.9
|year humidity = 71.5
<!--Average monthly sunshine hours, monthly totals are preferred, and will produce colors, but percentages are accepted.-->
|Jan sun = 135.8
|Feb sun = 145.3
|Mar sun = 208.9
|Apr sun = 256.6
|May sun = 287.2
|Jun sun = 291.1
|Jul sun = 287.3
|Aug sun = 278.0
|Sep sun = 232.3
|Oct sun = 217.2
|Nov sun = 151.7
|Dec sun = 122.5
|Jan percentsun = 44
|Feb percentsun = 48
|Mar percentsun = 56
|Apr percentsun = 65
|May percentsun = 66
|Jun percentsun = 67
|Jul percentsun = 65
|Aug percentsun = 67
|Sep percentsun = 62
|Oct percentsun = 62
|Nov percentsun = 49
|Dec percentsun = 40
|year percentsun = 59
<!--Mandatory fields, source-->
|source 1 =[[NOAA]] (relative humidity and sun 1961–1990)<ref name=NOAA-K>
{{cite web 
|url = https://w2.weather.gov/climate/xmacis.php?wfo=mrx
|title = NowData—NOAA Online Weather Data 
|publisher = National Oceanic and Atmospheric Administration 
|access-date = May 25, 2021 |archive-url = https://web.archive.org/web/20181116080734/http://w2.weather.gov/climate/xmacis.php?wfo=mrx 
|archive-date = November 16, 2018 |url-status = live }}</ref><ref>
{{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=USW00013891&format=pdf
|title = Station: Knoxville McGhee Tyson AP, TN
|publisher = National Oceanic & Atmospheric Administration
|work = U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020)
|access-date = May 25, 2021}}</ref><ref>{{cite web
| url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72326.TXT
| title = WMO Climate Normals for KNOXVILLE/MUNICIPAL, TN 1961–1990
| publisher = National Oceanic and Atmospheric Administration
| access-date = March 10, 2014}}</ref>
|date=February 2012}}<section end="weather box"/>