Editing McAllen, Texas (section)

===Climate===
McAllen, like much of [[South Texas]], has a [[subtropical climate]].<ref>[[Voy:Rio Grande Valley|Rio Grande Valley]]. Wikivoyage.</ref> Under the [[Köppen climate classification]], the city features a subtropical [[semi-arid climate]] (''BSh''), featuring long, very hot and humid summers, and brief, warm winters. The city has two distinct seasons, a [[wet season]] from May to October and a [[dry season]] from November to April. The normal monthly mean temperature ranges from {{convert|62.8|F|1}} in January to {{convert|89.3|F|1}} in August.<ref name= "NOWData NWS Brownsville, TX (BRO)"/> The warm season is extremely long, as average high temperatures from May through September are above {{convert|90|F}} and average low temperatures are above {{Convert|70|F}}, with relatively high [[dew point]] values, resulting in higher [[relative humidity]] and [[heat index]] values. Heat indices consistently reach over {{convert|110|F}} during these months. Winter temperatures in McAllen and surrounding Rio Grande Valley are some of the warmest in the [[contiguous United States]] outside of [[South Florida]], and comparable to the [[Coachella Valley|Coachella]] and [[Imperial Valley|Imperial]] Valleys and [[Yuma Desert]], but with warmer nighttime lows and higher [[Dewpoint|dew points]].

Average annual precipitation is {{convert|22.31|in|mm|abbr=on}}. Most precipitation occurs in the warm season, with the least precipitation distinctly occurring in the cooler winter. As September is the peak of the north [[Atlantic hurricane season]] and tropical storms and hurricanes occasionally drop copious amounts of rainfall on the region, this month tends by far to be the wettest, averaging {{convert|4.74|in|mm|abbr=on}} of rain. The driest month is February, with only {{convert|0.66|in|mm|abbr=on}} of precipitation. Since 1941, it has snowed twice, once when the city received {{convert|1.7|in|abbr=on}} on [[2004 Christmas Eve United States winter storm|December 25, 2004]].<ref name= "NOWData NWS Brownsville, TX (BRO)"/>

Temperatures consistently rise above {{convert|100|F}} from June through August, with exceptionally high humidity. The highest temperature ever recorded in McAllen was {{convert|111|F}}, set on June 22, 2017 and May 9, 2024. The lowest temperature ever recorded in McAllen was {{convert|13|F}}, on January 12, 1962.<ref name= "NOWData NWS Brownsville, TX (BRO)"/>

While usually a hot, humid, but relatively dry climate, McAllen has received unusual weather phenomena. In 2013, McAllen received a large hailstorm that destroyed many vehicles and buildings. The storm came suddenly, and many people were unprepared. In December 2017, McAllen received almost {{convert|3|in|mm|abbr=on}} of snow, nearly 13 years after the previous snowfall, which took place during the [[2004 Christmas Eve United States winter storm]]. In February 2021, McAllen reached record low temperatures between {{Convert|10|F}} and {{Convert|20|F}} and lost power, heat, and water for a week due to [[Winter Storm Uri]]. In addition to these fluke weather events, McAllen is prone to tropical storms, hurricanes such as [[Hurricane Dolly (2008)]] and [[Hurricane Hanna (2020)]], and heatwaves.

{{Weather box|width=auto
|location = McAllen, Texas ([[McAllen Miller International Airport]]), 1991–2020 normals,{{efn|Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020}} extremes 1941–present
|single line = Y
|Jan record high F =  96
|Feb record high F = 101
|Mar record high F = 105
|Apr record high F = 109
|May record high F = 111
|Jun record high F = 111
|Jul record high F = 109
|Aug record high F = 108
|Sep record high F = 108
|Oct record high F = 104
|Nov record high F = 102
|Dec record high F =  96

|Jan avg record high F = 87.4
|Feb avg record high F = 92.4
|Mar avg record high F = 96.1
|Apr avg record high F = 98.8
|May avg record high F = 99.5
|Jun avg record high F = 102.0
|Jul avg record high F = 103.2
|Aug avg record high F = 103.8
|Sep avg record high F = 101.0
|Oct avg record high F = 96.8
|Nov avg record high F = 91.7
|Dec avg record high F = 87.5
|year avg record high F= 105.5

|Jan high F = 72.8
|Feb high F = 77.4
|Mar high F = 83.2
|Apr high F = 88.4
|May high F = 93.1
|Jun high F = 97.4
|Jul high F = 98.5
|Aug high F = 99.6
|Sep high F = 94.3
|Oct high F = 89.3
|Nov high F = 80.3
|Dec high F = 73.8
|year high F= 
|Jan mean F = 62.8
|Feb mean F = 67.2
|Mar mean F = 72.9
|Apr mean F = 78.4
|May mean F = 83.6
|Jun mean F = 87.7
|Jul mean F = 88.6
|Aug mean F = 89.3
|Sep mean F = 85.0
|Oct mean F = 79.0
|Nov mean F = 70.2
|Dec mean F = 64.0
|year mean F=  
|Jan low F = 52.7
|Feb low F = 56.9
|Mar low F = 62.7
|Apr low F = 68.4
|May low F = 74.1
|Jun low F = 78.0
|Jul low F = 78.8
|Aug low F = 78.9
|Sep low F = 75.6
|Oct low F = 68.7
|Nov low F = 60.1
|Dec low F = 54.1
|year low F= 
|Jan avg record low F = 36.2
|Feb avg record low F = 38.5
|Mar avg record low F = 43.9
|Apr avg record low F = 51.1
|May avg record low F = 61.4
|Jun avg record low F = 70.6
|Jul avg record low F = 73.0
|Aug avg record low F = 73.3
|Sep avg record low F = 64.9
|Oct avg record low F = 50.4
|Nov avg record low F = 41.7
|Dec avg record low F = 36.2
|year avg record low F = 33.2
|Jan record low F = 13
|Feb record low F = 19
|Mar record low F = 31
|Apr record low F = 40
|May record low F = 50
|Jun record low F = 59
|Jul record low F = 65
|Aug record low F = 64
|Sep record low F = 50
|Oct record low F = 41
|Nov record low F = 30
|Dec record low F = 18

|precipitation colour = green
|Jan precipitation inch = 0.84
|Feb precipitation inch = 0.66
|Mar precipitation inch = 1.15
|Apr precipitation inch = 1.35
|May precipitation inch = 1.98
|Jun precipitation inch = 2.73
|Jul precipitation inch = 2.10
|Aug precipitation inch = 1.75
|Sep precipitation inch = 4.74
|Oct precipitation inch = 2.04
|Nov precipitation inch = 1.19
|Dec precipitation inch = 1.10
|year precipitation inch =22.31
|unit precipitation days = 0.01 in
|Jan precipitation days = 6.1
|Feb precipitation days = 4.5
|Mar precipitation days = 4.4
|Apr precipitation days = 3.8
|May precipitation days = 4.3
|Jun precipitation days = 4.8
|Jul precipitation days = 4.7
|Aug precipitation days = 4.7
|Sep precipitation days = 8.0
|Oct precipitation days = 5.8
|Nov precipitation days = 5.2
|Dec precipitation days = 6.1
|year precipitation days=62.4
|source 1 = NOAA<ref name= "NOWData NWS Brownsville, TX (BRO)">{{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=October 18, 2019}}</ref><ref name = "NCEI normals">{{cite web |url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00012959&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL |title = Summary of Monthly Normals 1991–2020 |publisher = National Oceanic & Atmospheric Administration |access-date=April 14, 2023}}</ref>
}}