Editing Brownsville, Texas (section)

===Climate===

Brownsville has a [[humid subtropical climate]] ([[Köppen climate classification|Köppen]] ''Cfa''). Winters are warm, and summers are hot and humid.<ref name="koppen">Peel, M. C., Finlayson, B. L., and McMahon, T. A.: [//upload.wikimedia.org/wikipedia/commons/7/77/Americas_K%C3%B6ppen_Map_original_colors.png Updated world map of the Köppen-Geiger climate classification], ''Hydrol. Earth Syst. Sci.'', 11, 1633–1644, 2007.</ref> Due to its location on the [[Gulf Coast of the United States|Gulf Coast]] about 2.49° north of the [[Tropic of Cancer]], the climate closely borders a [[tropical savanna climate]]. Due to its proximity to the deserts of Chihuahua and [[Gulf Coastal Plain]]s, Brownsville's geographic location lies near the boundary of a hot [[semi-arid climate]].<ref name="koppen"/> Snow is a very rare event in Brownsville. Its [[wet season]] is concentrated during the late summer and early fall, peaking in September, when the threat from [[tropical cyclone]]s is greatest. In most years, November through April is the [[dry season]]. As such, Brownsville receives modest annual rainfall, averaging about {{convert|26.78|in|abbr=on}} annually based on records between 1991 and 2020.<ref name=NWS/>

The monthly daily average temperature ranges from {{convert|62.9|°F|1}} in January to {{convert|87|°F|1}} in August. Heat waves during the summer have caused 141 days of high temperatures over {{convert|90|°F|1}} and fewer than five days of temperatures above {{convert|100|°F|1}}. The city is located along the boundary of [[hardiness zone|USDA hardiness zones]] 9b and 10a.<ref>"[https://planthardiness.ars.usda.gov/PHZMWeb/ USDA Plant Hardiness Zone Map] {{Webarchive|url=https://web.archive.org/web/20181106190232/https://planthardiness.ars.usda.gov/PHZMWeb/ |date=November 6, 2018}}". ''Agricultural Research Service''. [[United States Department of Agriculture]]. Retrieved December 31, 2018.</ref> The hottest temperature on record in Brownsville occurred on March 27, 1984, and August 28, 2023, when the city reached {{convert|106|°F|0}}. On the other extreme, freezing temperatures occur once or twice a year typically.<ref name=NWS /> On December 25, 2004, Brownsville recorded its first instance of measurable snow in 109 years with {{convert|1.5|in|cm|abbr=on}}, and the first recorded [[White Christmas (weather)|White Christmas]].<ref>{{Cite web |url=https://www.weather.gov/bro/2004event_christmasreport |title=White Christmas Dream Becomes Reality for the Lower RGV, 2004! |website=[[National Weather Service]] |access-date=January 25, 2019 |archive-date=January 26, 2019 |archive-url=https://web.archive.org/web/20190126062919/https://www.weather.gov/bro/2004event_christmasreport |url-status=live}}</ref> Brownsville's lowest temperature on record occurred on [[Great Blizzard of 1899|February 13, 1899]], when the city reached {{convert|12|F|C|0}}.<ref>"[http://www.intellicast.com/Local/History.aspx?month=2&location=USTX0166 Brownsville Historic Weather Averages in Texas] {{Webarchive|url=https://web.archive.org/web/20190114044507/http://www.intellicast.com/Local/History.aspx?month=2&location=USTX0166 |date=January 14, 2019}}". ''Intellicast''. Retrieved January 13, 2019.</ref> Based on 30-year averages obtained from the [[National Oceanic and Atmospheric Administration]]'s [[National Climatic Data Center]] weather records, ''24/7 Wall St.'' ranked Brownsville the fifth-hottest city in America in 2016.<ref>Stebbins, Samuel (June 25, 2016). "[https://www.usatoday.com/story/money/business/2016/06/25/hottest-cities-america/86210426/  The hottest cities in America] {{Webarchive|url=https://web.archive.org/web/20190103013305/https://www.usatoday.com/story/money/business/2016/06/25/hottest-cities-america/86210426/ |date=January 3, 2019}}". ''USA Today''. Retrieved December 31, 2018.</ref>

{{Weather box |collapsed = Y
|location = [[Brownsville/South Padre Island International Airport]], Texas (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 1878−present)
|single line = Y
|Jan high F = 72.6
|Feb high F = 76.2
|Mar high F = 80.6
|Apr high F = 85.7
|May high F = 90.3
|Jun high F = 94.0
|Jul high F = 95.0
|Aug high F = 96.3
|Sep high F = 92.2
|Oct high F = 87.3
|Nov high F = 80.3
|Dec high F = 74.2
|year high F= 85.4
|Jan mean F = 62.9
|Feb mean F = 66.5
|Mar mean F = 71.3
|Apr mean F = 76.7
|May mean F = 82.0
|Jun mean F = 85.6
|Jul mean F = 86.4
|Aug mean F = 87.0
|Sep mean F = 83.4
|Oct mean F = 77.9
|Nov mean F = 70.5
|Dec mean F = 64.4
|year mean F =
|Jan low F = 53.1
|Feb low F = 56.9
|Mar low F = 62.0
|Apr low F = 67.7
|May low F = 73.7
|Jun low F = 77.2
|Jul low F = 77.8
|Aug low F = 77.8
|Sep low F = 74.7
|Oct low F = 68.6
|Nov low F = 60.8
|Dec low F = 54.7
|year low F= 67.1
| Jan avg record high F  = 83.9
| Feb avg record high F  = 87.1
| Mar avg record high F  = 91.4
| Apr avg record high F  = 94.8
| May avg record high F  = 95.3
| Jun avg record high F  = 97.2
| Jul avg record high F  = 98.0
| Aug avg record high F  = 99.1
| Sep avg record high F  = 97.2
| Oct avg record high F  = 93.1
| Nov avg record high F  = 88.7
| Dec avg record high F  = 85.3
| year avg record high F = 100.7
| Jan avg record low F  = 36.4
| Feb avg record low F  = 40.1
| Mar avg record low F  = 43.8
| Apr avg record low F  = 50.9
| May avg record low F  = 60.9
| Jun avg record low F  = 70.4
| Jul avg record low F  = 72.8
| Aug avg record low F  = 72.7
| Sep avg record low F  = 64.7
| Oct avg record low F  = 51.9
| Nov avg record low F  = 42.5
| Dec avg record low F  = 36.5
| year avg record low F = 33.7
|Jan record high F =  95
|Feb record high F =  94
|Mar record high F = 106
|Apr record high F = 104
|May record high F = 104
|Jun record high F = 104
|Jul record high F = 104
|Aug record high F = 106
|Sep record high F = 105
|Oct record high F =  99
|Nov record high F =  98
|Dec record high F =  94

|Jan record low F = 18
|Feb record low F = 12
|Mar record low F = 28
|Apr record low F = 37
|May record low F = 41
|Jun record low F = 56
|Jul record low F = 58
|Aug record low F = 63
|Sep record low F = 51
|Oct record low F = 35
|Nov record low F = 27
|Dec record low F = 16
|precipitation colour = green
|Jan precipitation inch = 1.08
|Feb precipitation inch = 1.03
|Mar precipitation inch = 1.45
|Apr precipitation inch = 1.47
|May precipitation inch = 2.22
|Jun precipitation inch = 2.86
|Jul precipitation inch = 1.98
|Aug precipitation inch = 2.16
|Sep precipitation inch = 5.73
|Oct precipitation inch = 3.83
|Nov precipitation inch = 1.76
|Dec precipitation inch = 1.21
|year precipitation inch= 26.78
|unit precipitation days = 0.01 in
|Jan precipitation days =  7.0
|Feb precipitation days =  5.3
|Mar precipitation days =  5.3
|Apr precipitation days =  4.5
|May precipitation days =  4.8
|Jun precipitation days =  5.8
|Jul precipitation days =  4.8
|Aug precipitation days =  6.1
|Sep precipitation days = 11.1
|Oct precipitation days =  7.6
|Nov precipitation days =  7.0
|Dec precipitation days =  7.5

|Jan humidity = 79.3
|Feb humidity = 77.4
|Mar humidity = 74.6
|Apr humidity = 75.1
|May humidity = 76.5
|Jun humidity = 75.0
|Jul humidity = 73.2
|Aug humidity = 73.8
|Sep humidity = 76.3
|Oct humidity = 75.3
|Nov humidity = 76.1
|Dec humidity = 78.2

|Jan sun = 130.6
|Feb sun = 151.3
|Mar sun = 206.8
|Apr sun = 232.7
|May sun = 266.4
|Jun sun = 306.5
|Jul sun = 334.4
|Aug sun = 306.4
|Sep sun = 252.0
|Oct sun = 228.3
|Nov sun = 166.2
|Dec sun = 130.7
|year sun=
|Jan percentsun = 39
|Feb percentsun = 48
|Mar percentsun = 56
|Apr percentsun = 61
|May percentsun = 64
|Jun percentsun = 74
|Jul percentsun = 79
|Aug percentsun = 76
|Sep percentsun = 68
|Oct percentsun = 64
|Nov percentsun = 51
|Dec percentsun = 40
|year percentsun= 61

|source 1= NOAA (relative humidity and sun 1961−1990)<ref name=NWS>{{cite web|url=https://w2.weather.gov/climate/xmacis.php?wfo=bro|title=NOWData – NOAA Online Weather Data|publisher=[[National Oceanic and Atmospheric Administration]]|access-date=May 21, 2017|archive-date=July 2, 2017|archive-url=https://web.archive.org/web/20170702163500/http://w2.weather.gov/climate/xmacis.php?wfo=bro|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=USW00024230&format=pdf
| title = Summary of Monthly Normals 1991&ndash;2020
| publisher = [[National Oceanic and Atmospheric Administration]]
| accessdate = January 6, 2024
}}</ref><ref name=NOAA2>{{cite web|url=ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72250.TXT|title=WMO climate normals for Brownsville/INTL, TX 1961−1990|publisher=[[National Oceanic and Atmospheric Administration]]|access-date=September 17, 2020}}</ref>
}}