Tulsa, Oklahoma

===Climate===
[[File:Monthly Climate Normals (1991-2020) - Tulsa Area, OK(ThreadEx).svg|thumb|right|Climate chart for Tulsa]]
Tulsa has a [[temperate]] climate of the [[humid subtropical]] variety ([[Köppen climate classification|Köppen]] ''Cfa'') with a yearly average temperature of {{convert|61.3|°F}} and average precipitation of just under {{Convert|41|in|mm}} per year. Average monthly precipitation is lowest from December to February, and peaks dramatically in May, which averages {{Convert|5.9|in|mm}} of rainfall. Early June can still be wet, but late June through the end of August is frequently dry. On average, Tulsa experiences a secondary rainfall peak in September and early October. As is typical of temperate zones, weather patterns vary by season with occasional extremes in temperature and rainfall.<ref name="The Climate of Tulsa County" />

Primarily in the spring and early summer months, the city is subjected to severe [[thunderstorms]] containing large [[hail]], damaging winds, and, occasionally, [[tornadoes]],<ref name="The Climate of Tulsa County">{{cite web
 |url         = http://climate.ocs.ou.edu/county_climate/Products/County_Climatologies/county_climate_tulsa.pdf
 |title       = Climate of Tulsa County
 |publisher   = Oklahoma Climatological Survey
 |page        = 1
 |access-date  = April 26, 2006
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20060902034405/http://climate.ocs.ou.edu/county_climate/Products/County_Climatologies/county_climate_tulsa.pdf
 |archive-date = September 2, 2006
 |df          = mdy-all
}}</ref> providing the area with a disproportionate share of its annual rainfall.<ref name="Weatherbase">{{cite web
 | url=http://www.weatherbase.com/weather/weather.php3?s=065327&refer=
 |title=Historical Weather for Tulsa, Oklahoma, United States of America
 | publisher=Weatherbase
 | year=2007
 | access-date=April 26, 2007 }}</ref> Severe weather is not limited to this season, however. For instance, on December 5, 1975, and on December 24, 1982, Tulsa experienced tornadoes.<ref name="The Climate of Tulsa County" /> Due to [[Flooding and flood control in Tulsa|its potential for major flooding events]], the city has developed one of the most extensive flood control systems in the nation.<ref name="Flooding History" /> A comprehensive flood management plan was developed in 1984 following a severe flood caused by a stalled [[Surface weather analysis|weather front]] that dropped {{convert|15|in|-1|abbr=on}} of rain overnight, killing 14, injuring 288, and destroying 7,000 buildings totaling {{Nowrap|$180 million}} in damage.<ref name="Flooding History">{{cite web
 | url=http://www.cityoftulsa.org/CityServices/FloodControl/History.asp
 | title=Flooding History
 | publisher=City of Tulsa
 | year=2005
 | access-date=May 8, 2007 }}</ref> In the early 1990s<ref name="Flooding History" /> and again in 2000,<ref>{{cite news
 |title       = FEMA Honors Tulsa, Oklahoma As Nation's Leading Floodplain Management Community
 |date        = September 13, 2000
 |publisher   = [[Federal Emergency Management Agency]]
 |url         = http://www.fema.gov/news/newsrelease.fema?id=8679
 |access-date  = April 28, 2007
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20070926234946/http://www.fema.gov/news/newsrelease.fema?id=8679
 |archive-date = September 26, 2007
 |df          = mdy-all
}}</ref> the [[Federal Emergency Management Agency]] honored Tulsa as leading the nation in flood plain management.
Triple-digit temperatures (≥38&nbsp;°C) are observed on average 11 days per year, most of which occur from July to early September,<ref name="Autumn Climatology for Eastern Oklahoma and Northwest Arkansas">{{cite web
 | url=http://www.srh.noaa.gov/tsa/?n=climo_cliautumn
 | title=Autumn Climatology for Eastern Oklahoma and Northwest Arkansas
 | publisher=National Weather Service
 | access-date=April 30, 2006
}}</ref> and are usually accompanied by high humidity brought in by southerly winds.<ref name="The Climate of Tulsa County" /> The highest recorded temperature was {{convert|115|°F|0}} on August 10, 1936.<ref>Tulsa World. "[http://www.tulsaworld.com/news/article.aspx?subjectid=334&articleid=20110803_477_A1_CUTLIN322183 Tulsa's temperatures, water usage continue to soar]".</ref> Lack of air circulation due to heat and humidity during the summer months leads to higher concentrations of [[ozone]], prompting the city to release "Ozone Alerts", encouraging all parties to do their part in complying with the [[Clean Air Act (United States)|Clean Air Act]] and [[United States Environmental Protection Agency]] standards.<ref>{{cite web
 | url=http://www.ozonealert.com/problem3.htm
 | archive-url=https://web.archive.org/web/20060528185940/http://www.ozonealert.com/problem3.htm
 | archive-date=May 28, 2006
 | title=Ozone Alert! Program Data and Monitoring
 | publisher=Tulsa Ozone Alert
 | access-date=April 30, 2006}}</ref> The autumn season is usually short, consisting of pleasant, sunny days followed by cool nights.<ref name="Autumn Climatology for Eastern Oklahoma and Northwest Arkansas" /> Winter temperatures, while generally mild, dip below {{convert|10|°F|0}} on average three nights per year, and occasionally below {{convert|0|°F|0}}, the most recent such occurrence being a {{convert|−13|°F|0}} reading on February 16, 2021.<ref name="NOAA" /> The record for the highest seasonal snowfall is 26.1 inches (66.3&nbsp;cm) set in the winter of 2010–2011. Only three winters on record have officially recorded trace amounts or no snowfall, the most recent being 1910–11.<ref name="NOAA" /> The lowest recorded temperature was {{convert|−16|°F|0}} on January 22, 1930.
{{Weather box 
|location = Tulsa, Oklahoma ([[Tulsa International Airport|Tulsa Int'l]]), 1991–2020 normals, extremes 1893–present{{efn|Official records for Tulsa kept August 1893 to December 1930 at downtown and at Tulsa Int'l since January 1931. For more information, see [http://threadex.rcc-acis.org Threadex].}}
|single line = Y
|Jan record high F = 82
|Feb record high F = 90
|Mar record high F = 99
|Apr record high F = 102
|May record high F = 100
|Jun record high F = 108
|Jul record high F = 113
|Aug record high F = 115
|Sep record high F = 109
|Oct record high F = 98
|Nov record high F = 89
|Dec record high F = 80
|year record high F = 115
|Jan avg record high F = 70.1
|Feb avg record high F = 74.9
|Mar avg record high F = 83.4
|Apr avg record high F = 86.8
|May avg record high F = 91.3
|Jun avg record high F = 95.4
|Jul avg record high F = 101.9
|Aug avg record high F = 102.2
|Sep avg record high F = 96.2
|Oct avg record high F = 88.2
|Nov avg record high F = 79.0
|Dec avg record high F = 70.1
|year avg record high F = 103.9
|Jan high F = 48.9
|Feb high F = 54.0
|Mar high F = 63.3
|Apr high F = 72.1
|May high F = 79.7
|Jun high F = 88.4
|Jul high F = 93.6
|Aug high F = 93.0
|Sep high F = 84.8
|Oct high F = 73.6
|Nov high F = 61.4
|Dec high F = 50.9
|year high F = 72.0
|Jan mean F = 38.5
|Feb mean F = 42.8
|Mar mean F = 52.0
|Apr mean F = 60.8
|May mean F = 69.6
|Jun mean F = 78.6
|Jul mean F = 83.4
|Aug mean F = 82.2
|Sep mean F = 73.8
|Oct mean F = 62.3
|Nov mean F = 50.4
|Dec mean F = 41.0
|year mean F = 61.3
|Jan low F = 28.0
|Feb low F = 31.7
|Mar low F = 40.7
|Apr low F = 49.5
|May low F = 59.5
|Jun low F = 68.7
|Jul low F = 73.1
|Aug low F = 71.5
|Sep low F = 62.8
|Oct low F = 50.9
|Nov low F = 39.4
|Dec low F = 31.1
|year low F = 50.6
|Jan avg record low F = 10.4
|Feb avg record low F = 13.5
|Mar avg record low F = 22.9
|Apr avg record low F = 33.5
|May avg record low F = 44.8
|Jun avg record low F = 56.4
|Jul avg record low F = 63.4
|Aug avg record low F = 60.5
|Sep avg record low F = 46.0
|Oct avg record low F = 34.5
|Nov avg record low F = 23.4
|Dec avg record low F = 12.6
|year avg record low F = 4.6
|Jan record low F = -16
|Feb record low F = -15
|Mar record low F = -3
|Apr record low F = 22
|May record low F = 32
|Jun record low F = 49
|Jul record low F = 51
|Aug record low F = 48
|Sep record low F = 35
|Oct record low F = 15
|Nov record low F = 10
|Dec record low F = -8
|year record low F = -16
|precipitation colour = green
|Jan precipitation inch = 1.63
|Feb precipitation inch = 1.62
|Mar precipitation inch = 3.10
|Apr precipitation inch = 4.37
|May precipitation inch = 5.73
|Jun precipitation inch = 4.65
|Jul precipitation inch = 3.76
|Aug precipitation inch = 3.38
|Sep precipitation inch = 3.85
|Oct precipitation inch = 3.78
|Nov precipitation inch = 2.66
|Dec precipitation inch = 2.43
|year precipitation inch=
|Jan snow inch = 1.9
|Feb snow inch = 2.4
|Mar snow inch = 1.9
|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 = 0.8
|Dec snow inch = 1.7
|year snow inch= 
|unit precipitation days = 0.01 in
|unit snow days = 0.1 in
|Jan precipitation days =  6.0
|Feb precipitation days =  6.6
|Mar precipitation days =  8.6
|Apr precipitation days =  9.1
|May precipitation days = 11.1
|Jun precipitation days =  9.1
|Jul precipitation days =  7.3
|Aug precipitation days =  6.9
|Sep precipitation days =  7.8
|Oct precipitation days =  8.4
|Nov precipitation days =  6.7
|Dec precipitation days =  6.7
|year precipitation days = 
|Jan snow days = 1.8
|Feb snow days = 1.3
|Mar snow days = 0.6
|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 = 0.4
|Dec snow days = 1.2
|year snow days =
|Jan sun = 175.8 |Jan percentsun = 57
|Feb sun = 171.7 |Feb percentsun = 56
|Mar sun = 219.6 |Mar percentsun = 59
|Apr sun = 244.4 |Apr percentsun = 62
|May sun = 266.7 |May percentsun = 61
|Jun sun = 294.8 |Jun percentsun = 67
|Jul sun = 334.7 |Jul percentsun = 75
|Aug sun = 305.3 |Aug percentsun = 73
|Sep sun = 232.5 |Sep percentsun = 63
|Oct sun = 218.6 |Oct percentsun = 63
|Nov sun = 161.1 |Nov percentsun = 52
|Dec sun = 160.8 |Dec percentsun = 53
|year percentsun = 63
|Jan humidity = 66.7
|Feb humidity = 65.2
|Mar humidity = 61.6
|Apr humidity = 61.2
|May humidity = 69.1
|Jun humidity = 69.3
|Jul humidity = 63.6
|Aug humidity = 64.5
|Sep humidity = 70.1
|Oct humidity = 66.4
|Nov humidity = 67.4
|Dec humidity = 68.5
|year humidity = 66.1
|Jan dew point C = -4.7
|Feb dew point C = -2.4
|Mar dew point C = 2.0
|Apr dew point C = 7.7
|May dew point C = 14.1
|Jun dew point C = 18.7
|Jul dew point C = 19.9
|Aug dew point C = 19.2
|Sep dew point C = 16.2
|Oct dew point C = 9.3
|Nov dew point C = 3.2
|Dec dew point C = -2.3
|source 1 = NOAA (relative humidity, dew point and sun 1961–1990)<ref name = NOAA>{{cite web 
|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00013968&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL 
|publisher = National Oceanic and Atmospheric Administration 
|title = Station Name: Tulsa INTL AP, OK 
|access-date = December 30, 2023
|archive-url = https://web.archive.org/web/20240204093655/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00013968&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL
|archive-date = 2024-02-04}}</ref><ref name = NOWData >{{cite web 
|url = https://w2.weather.gov/climate/xmacis.php?wfo=tsa 
|title = NowData – NOAA Online Weather Data 
|publisher = [[National Oceanic and Atmospheric Administration]] 
|access-date = February 1, 2012}}</ref><ref name= noaasun >{{cite web 
|url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72356.TXT 
|title = WMO Climate Normals for TULSA/WSO AP OK 1961–1990 
|access-date = March 11, 2014 
|publisher = National Oceanic and Atmospheric Administration
|archive-url = https://web.archive.org/web/20240204092424/ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72356.TXT
|archive-date = 2024-02-04}}</ref>
}}
{{Graph:Weather monthly history
| table=ncei.noaa.gov/weather/Tulsa, Oklahoma.tab
| title=Tulsa monthly weather statistics
}}