New Orleans

===Climate===
{{See also|Hurricane preparedness for New Orleans}}
<div style="width:100%;"></div>

[[File:Snow in New Orleans by evreniz.jpg|thumb|upright=1.15|right|Snow falls on [[St. Charles Avenue]] in December 2008.]]The climate of New Orleans is [[Humid subtropical climate|humid subtropical]] ([[Köppen climate classification|Köppen]]: ''Cfa''), with short, generally mild winters and hot, humid summers; in the 1991-2020 climate normals the USDA hardiness zone is 9b, with the coldest temperature in most years being about {{convert|27.6|°F|1}}. The monthly daily average temperature ranges from {{convert|54.3|°F|1}} in January to {{convert|84|°F|1}} in August. Officially, as measured at New Orleans International Airport, temperature records range from {{convert|11|to|102|F|C}} [[December 1989 United States cold wave|on December 23, 1989]], and August 22, 1980, respectively; Audubon Park has recorded temperatures ranging from {{convert|6|°F}} on [[Great Blizzard of 1899|February 13, 1899]], up to {{convert|104|°F}} on June 24, 2009.<ref name="NWS New Orleans/Baton Rouge, LA (LIX)"/> Dewpoints in the summer months (June–August) are relatively high, ranging from {{convert|21.7|to|23.0|C|F|order=flip}}.<ref name="WMO 1961–90 KMSY"/>

The average precipitation is {{convert|62.5|in|sigfig=3}} annually; the summer months are the wettest, while October is the driest month.<ref name="NWS New Orleans/Baton Rouge, LA (LIX)"/> Precipitation in winter usually accompanies the passing of a cold front. There are a median of over 80 days of {{convert|90|°F|0}}+ highs, 9 days per winter where the high does not exceed {{convert|50|°F|0}}, and less than 8 nights with freezing lows annually, although it is not uncommon for entire winter seasons to pass with no freezing temperatures at all, such as the 2003-04 winter, the 2012-13 winter, the 2015-16 winter and the consecutive winters of 2018-19 and 2019–20. It is rare for the temperature to reach {{convert|20|or|100|°F|°C}}, with the last occurrence of each being January 17, 2018, and June 26, 2016, respectively.<ref name="NWS New Orleans/Baton Rouge, LA (LIX)"/>

New Orleans experiences snowfall only on rare occasions. A small amount of snow fell during the [[2004 Christmas Eve Snowstorm]] and again on [[Christmas]] (December 25) when a combination of rain, sleet, and snow fell on the city, leaving some bridges icy. The [[New Year's Eve 1963 snowstorm]] affected New Orleans and brought {{convert|4.5|in|cm}}. Snow fell again on December 22, 1989, during the [[December 1989 United States cold wave]], when most of the city received {{convert|1|–|2|in|cm}}.

The last significant snowfall in New Orleans was on the morning of December 11, 2008.<ref>{{cite web |last1=McCusker |first1=John |title=Sleet, snow tail off in New Orleans |url=https://www.nola.com/news/article_63526a1c-c17c-59fc-8cbe-b660bdb6ef27.html |website=nola.com |date=December 11, 2008 |access-date=February 16, 2020 |archive-date=February 16, 2020 |archive-url=https://web.archive.org/web/20200216203249/https://www.nola.com/news/article_63526a1c-c17c-59fc-8cbe-b660bdb6ef27.html |url-status=live }}</ref>{{Weather box
| location = [[Louis Armstrong New Orleans International 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 1946–present){{efn|Official records for New Orleans have been kept at MSY since May 1, 1946.<ref>{{cite web |url=http://threadex.rcc-acis.org/ |title=Threaded Extremes |website=threadex.rcc-acis.org |access-date=September 3, 2016 |archive-date=March 5, 2020 |archive-url=https://web.archive.org/web/20200305195121/http://threadex.rcc-acis.org/ |url-status=live }}</ref> Additional records from Audubon Park dating back to 1893 have also been included.}}
| single line = Y
| collapsed = Y
| Jan record high F = 83
| Feb record high F = 85
| Mar record high F = 89
| Apr record high F = 92
| May record high F = 97
| Jun record high F = 101
| Jul record high F = 101
| Aug record high F = 102
| Sep record high F = 101
| Oct record high F = 97
| Nov record high F = 90
| Dec record high F = 85
| year record high F = 102
| Jan avg record high F = 77.5
| Feb avg record high F = 79.7
| Mar avg record high F = 82.9
| Apr avg record high F = 86.5
| May avg record high F = 91.9
| Jun avg record high F = 95.2
| Jul avg record high F = 96.6
| Aug avg record high F = 96.7
| Sep avg record high F = 94.3
| Oct avg record high F = 89.8
| Nov avg record high F = 83.8
| Dec avg record high F = 80.3
| year avg record high F = 97.6
| Jan high F = 62.5
| Feb high F = 66.4
| Mar high F = 72.3
| Apr high F = 78.5
| May high F = 85.3
| Jun high F = 90.0
| Jul high F = 91.4
| Aug high F = 91.3
| Sep high F = 88.1
| Oct high F = 80.6
| Nov high F = 71.2
| Dec high F = 64.8
| year high F = 78.5
| Jan mean F = 54.3
| Feb mean F = 58.0
| Mar mean F = 63.8
| Apr mean F = 70.1
| May mean F = 77.1
| Jun mean F = 82.4
| Jul mean F = 83.9
| Aug mean F = 84.0
| Sep mean F = 80.8
| Oct mean F = 72.5
| Nov mean F = 62.4
| Dec mean F = 56.6
| year mean F = 70.5
| Jan low F = 46.1
| Feb low F = 49.7
| Mar low F = 55.3
| Apr low F = 61.7
| May low F = 69.0
| Jun low F = 74.7
| Jul low F = 76.5
| Aug low F = 76.6
| Sep low F = 73.5
| Oct low F = 64.3
| Nov low F = 53.7
| Dec low F = 48.4
| year low F = 62.5
| Jan avg record low F = 29.5
| Feb avg record low F = 33.4
| Mar avg record low F = 38.0
| Apr avg record low F = 47.1
| May avg record low F = 57.3
| Jun avg record low F = 67.4
| Jul avg record low F = 71.4
| Aug avg record low F = 71.1
| Sep avg record low F = 63.3
| Oct avg record low F = 47.7
| Nov avg record low F = 37.7
| Dec avg record low F = 32.6
| year avg record low F = 27.6
| Jan record low F = 14
| Feb record low F = 16
| Mar record low F = 25
| Apr record low F = 32
| May record low F = 41
| Jun record low F = 50
| Jul record low F = 60
| Aug record low F = 60
| Sep record low F = 42
| Oct record low F = 35
| Nov record low F = 24
| Dec record low F = 11
| year record low F = 11
| precipitation colour = green
| Jan precipitation inch = 5.18
| Feb precipitation inch = 4.13
| Mar precipitation inch = 4.36
| Apr precipitation inch = 5.22
| May precipitation inch = 5.64
| Jun precipitation inch = 7.62
| Jul precipitation inch = 6.79
| Aug precipitation inch = 6.91
| Sep precipitation inch = 5.11
| Oct precipitation inch = 3.70
| Nov precipitation inch = 3.87
| Dec precipitation inch = 4.82
| year precipitation inch = 63.35
| unit precipitation days = 0.01 in
| Jan precipitation days = 9.5
| Feb precipitation days = 9.0
| Mar precipitation days = 8.1
| Apr precipitation days = 7.3
| May precipitation days = 7.8
| Jun precipitation days = 12.7
| Jul precipitation days = 13.9
| Aug precipitation days = 13.6
| Sep precipitation days = 9.8
| Oct precipitation days = 7.1
| Nov precipitation days = 7.1
| Dec precipitation days = 9.2
| year precipitation days = 115.1
| Jan humidity = 75.6
| Feb humidity = 73.0
| Mar humidity = 72.9
| Apr humidity = 73.4
| May humidity = 74.4
| Jun humidity = 76.4
| Jul humidity = 79.2
| Aug humidity = 79.4
| Sep humidity = 77.8
| Oct humidity = 74.9
| Nov humidity = 77.2
| Dec humidity = 76.9
| year humidity = 75.9
| Jan sun = 153.0
| Feb sun = 161.5
| Mar sun = 219.4
| Apr sun = 251.9
| May sun = 278.9
| Jun sun = 274.3
| Jul sun = 257.1
| Aug sun = 251.9
| Sep sun = 228.7
| Oct sun = 242.6
| Nov sun = 171.8
| Dec sun = 157.8
| Jan percentsun = 47
| Feb percentsun = 52
| Mar percentsun = 59
| Apr percentsun = 65
| May percentsun = 66
| Jun percentsun = 65
| Jul percentsun = 60
| Aug percentsun = 62
| Sep percentsun = 62
| Oct percentsun = 68
| Nov percentsun = 54
| Dec percentsun = 50
| year percentsun = 60
| source 1 = [[NOAA]] (relative humidity and sun 1961–1990){{efn|Sunshine normals are based on only 20 to 22 years of data.}}<ref name = "NWS New Orleans/Baton Rouge, LA (LIX)">{{cite web |url=https://w2.weather.gov/climate/xmacis.php?wfo=lix |title=NOWData – NOAA Online Weather Data |publisher=National Oceanic and Atmospheric Administration |access-date=May 25, 2021 |archive-date=July 13, 2021 |archive-url=https://web.archive.org/web/20210713174234/https://w2.weather.gov/climate/xmacis.php?wfo=lix |url-status=live }}</ref><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=USW00012916&format=pdf |title=Station: New Orleans INTL AP, LA |publisher=National Oceanic and Atmospheric Administration |work=U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020) |access-date=May 25, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204114448/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00012916&format=pdf |url-status=live }}</ref><ref name="WMO 1961–90 KMSY" >{{cite web |url=ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72231.TXT |title=WMO Climate Normals for NEW ORLEANS, LA 1961–1990 |access-date=March 27, 2014 |publisher=National Oceanic and Atmospheric Administration |archive-date=July 16, 2020 |archive-url=https://web.archive.org/web/20200716200232/ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72231.TXT |url-status=live }}</ref>
| source = 
}}
{{Weather box
| location = [[Audubon Park, New Orleans]] (1991–2020 normals, extremes 1893–present)
| single line = Y
| collapsed = Y
| Jan record high F = 84
| Feb record high F = 86
| Mar record high F = 91
| Apr record high F = 93
| May record high F = 99
| Jun record high F = 104
| Jul record high F = 102
| Aug record high F = 103
| Sep record high F = 101
| Oct record high F = 97
| Nov record high F = 92
| Dec record high F = 85
| year record high F = 104
| Jan high F = 64.3
| Feb high F = 68.4
| Mar high F = 74.5
| Apr high F = 80.9
| May high F = 87.9
| Jun high F = 92.5
| Jul high F = 93.9
| Aug high F = 94.0
| Sep high F = 90.1
| Oct high F = 82.6
| Nov high F = 72.9
| Dec high F = 66.4
| year high F = 80.7
| Jan mean F = 55.4
| Feb mean F = 59.4
| Mar mean F = 65.2
| Apr mean F = 71.4
| May mean F = 78.6
| Jun mean F = 83.7
| Jul mean F = 85.2
| Aug mean F = 85.5
| Sep mean F = 81.8
| Oct mean F = 73.6
| Nov mean F = 63.7
| Dec mean F = 57.7
| year mean F = 71.8
| Jan low F = 46.5
| Feb low F = 50.5
| Mar low F = 55.8
| Apr low F = 62.0
| May low F = 69.3
| Jun low F = 74.9
| Jul low F = 76.6
| Aug low F = 76.9
| Sep low F = 73.6
| Oct low F = 64.7
| Nov low F = 54.6
| Dec low F = 49.0
| year low F = 62.9
| Jan record low F = 13
| Feb record low F = 6
| Mar record low F = 26
| Apr record low F = 32
| May record low F = 46
| Jun record low F = 54
| Jul record low F = 61
| Aug record low F = 60
| Sep record low F = 49
| Oct record low F = 35
| Nov record low F = 26
| Dec record low F = 12
| year record low F = 6
| precipitation colour = green
| Jan precipitation inch = 4.95
| Feb precipitation inch = 4.14
| Mar precipitation inch = 4.60
| Apr precipitation inch = 4.99
| May precipitation inch = 5.39
| Jun precipitation inch = 7.37
| Jul precipitation inch = 8.77
| Aug precipitation inch = 6.80
| Sep precipitation inch = 5.72
| Oct precipitation inch = 3.58
| Nov precipitation inch = 3.78
| Dec precipitation inch = 4.51
| year precipitation inch = 64.60
| unit precipitation days = 0.01 in
| Jan precipitation days = 9.8
| Feb precipitation days = 8.9
| Mar precipitation days = 7.5
| Apr precipitation days = 7.0
| May precipitation days = 7.4
| Jun precipitation days = 12.6
| Jul precipitation days = 15.1
| Aug precipitation days = 13.3
| Sep precipitation days = 10.0
| Oct precipitation days = 6.8
| Nov precipitation days = 7.3
| Dec precipitation days = 8.8
| year precipitation days = 114.5
| source 1 = NOAA<ref name = "NWS New Orleans/Baton Rouge, LA (LIX)"/><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=USW00012930&format=pdf |title=Station: New Orleans Audubon, LA |work=U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020) |publisher=National Oceanic and Atmospheric Administration |access-date=August 27, 2021 |archive-date=October 27, 2021 |archive-url=https://web.archive.org/web/20211027190832/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00012930&format=pdf |url-status=live }}</ref>
}}