Editing Raleigh, North Carolina (section)

===Climate===
[[File:Ducks in Fall.jpg|thumb|Ducks swimming at Durant Nature Preserve in the Fall]]Like much of the Southeastern United States, Raleigh has a four-season [[humid subtropical climate]] ([[Köppen climate classification|Köppen]] ''Cfa''). Winters are generally cool, with a normal January daily mean temperature of {{cvt|41.9|°F|1}}<!--(maximum+minimum)/2, NOT the maximum-->.<ref name="NWS Raleigh, NC (RAH)" /> On average, there are 69&nbsp;nights per year that drop to or below freezing, and only 2.7&nbsp;days that fail to rise above freezing.<ref name="NWS Raleigh, NC (RAH)" /> Raleigh receives an average annual rainfall of {{cvt|46.07|in|cm|1}}.<ref>{{cite web |url=https://www.usclimatedata.com/climate/raleigh/north-carolina/united-states/usnc0558 |title=Climate – Raleigh – North Carolina |date=November 10, 2018 |website=U.S. Climate Data |access-date=November 10, 2018}}</ref> Annual and monthly temperature and precipitation data are in chart below, based on 1991–2020 climate data. February is the driest month, with an average of {{cvt|2.78|in|1}} of precipitation. Precipitation is well distributed around the year, with a slight maximum between July and September, owing to generally frequent, sometimes heavy, showers and thunderstorms, and the threat of tropical weather systems (primarily from August to early October) bringing heavy rainfall. Summers are hot and humid, with a normal July daily mean temperature of {{cvt|80.5|°F|1}}<!--(maximum+minimum)/2, NOT the maximum-->.<ref name="NWS Raleigh, NC (RAH)" /> There are 48&nbsp;days per year with highs at or above {{cvt|90|°F|0}}.<ref name="NWS Raleigh, NC (RAH)" /> Autumn is similar to spring overall but has fewer days of rainfall, but greater potential for extremely heavy rainfall in a one/two-day period, owing to occasional threat from tropical weather systems (hurricanes and tropical storms) packing torrential rainfall. In September 1999, Raleigh recorded its wettest month ever, with over 21 inches of rain, due to torrential rainfall from tropical weather systems, most notably [[Hurricane Floyd]] on September 15–16. Raleigh's all-time record high temperature is  {{cvt|106|°F|0}} on July 5, 2024,<ref>{{Cite web |date=6 July 2024 |title=BREAKING: All-time record high/daily record high set at Raleigh & the daily record high set at Fayetteville. The high at Raleigh was 106 degrees which breaks the all-time record high of 105 degrees. The high at Fayetteville was 101°F which ties the old record high. |url=https://x.com/NWSRaleigh/status/1809332286443360266 |access-date=6 July 2024 |website=X (formerly Twitter)}}</ref> while the all-time record low is {{cvt|−9|°F|0}} on [[January 1985 Arctic outbreak|January 21, 1985]]. Raleigh falls in [[USDA]] [[hardiness zones]] 7b (5&nbsp;°F to 10&nbsp;°F) and 8a (10&nbsp;°F to 15&nbsp;°F).<ref>{{cite web |url=https://www.plantmaps.com/hardiness-zones-for-raleigh-north-carolina |title=Raleigh North Carolina USDA Plant Hardiness Zone Map |publisher=plantmaps.com plantmaps |access-date=December 11, 2019}}</ref>

[[File:Raleigh snow.jpg|thumb|Light snow in downtown Raleigh along [[Hillsborough Street]], 2015]]
Raleigh receives an average of {{cvt|5.2|in|cm|1}} of snow in winter. [[Freezing rain]] and [[Ice pellets|sleet]] also occur most winters, and occasionally the area experiences a major damaging [[ice storm]]. On January 24–25, 2000, Raleigh received its greatest snowfall from a single storm{{spaced ndash}}{{cvt|20.3|in|cm|0}}{{spaced ndash}}the [[January 25, 2000 Winter Storm|Winter Storm of January 2000]].<ref>{{cite web |url=https://abc11.com/snow-snowstorm-worst-in-north-carolina-history/5870402/ |title=20 inches of snow in Raleigh: A look back at the big snow of January 2000 |date=January 26, 2021 |website=ABC11.com |access-date=January 26, 2021}}</ref> Storms of this magnitude are generally the result of [[cold air damming]] that affects the city due to its proximity to the [[Appalachian Mountains]]. Winter storms have caused traffic problems in the past as well.

The region also experiences occasional periods of drought, during which the city sometimes has restricted water use by residents. During the late summer and early fall, Raleigh can experience [[hurricane]]s. In 1996, [[Hurricane Fran]] caused severe damage in the Raleigh area, mostly from falling trees.<ref>{{cite web |url=https://abc11.com/hurricane-fran-dorian-nc-north-carolina/5519835/ |title=23 years ago, Hurricane Fran made landfall near Cape Fear, North Carolina |date=September 6, 2019 |website=ABC11.com |access-date=September 6, 2019}}</ref> Hurricanes [[Hurricane Dennis (1999)|Dennis]] and Floyd in September 1999 were primary contributors to that month's extreme rainfall of over 21 inches. The most recent hurricane to have a considerable effect on the area was [[Hurricane Florence]] in 2018. Tornadoes also have on occasion affected the city of Raleigh, most notably the [[1988 Raleigh tornado outbreak|November 28, 1988, tornado]] which occurred in the early morning hours and rated F4 on the [[Fujita scale]] and affected northwestern portions of the city.<ref>{{cite web |url=https://www.wral.com/remembering-raleigh-saturday-marks-anniversary-of-historic-deadly-1988-tornado/19405711/ |title=Remembering Raleigh: Saturday marks anniversary of historic, deadly 1988 Tornado |last=Leah |first=Heather |date=November 28, 2020 |website=WRAL.com |access-date=November 28, 2020}}</ref> There also was the [[Tornado outbreak of April 14–16, 2011|April 16, 2011, EF3 tornado]], which affected portions of downtown and northeast Raleigh and the suburb of Holly Springs.<ref>{{Cite news |url=https://www.washingtonpost.com/weather/2021/04/15/north-carolina-tornado-outbreak-2011/?outputType=amp |title=Ten years ago, a swarm of tornadoes devastated North Carolina |last=Cappuci |first=Matthew |date=April 15, 2021 |newspaper=[[The Washington Post]] |access-date=August 9, 2021}}</ref>{{Weather box
| location = [[Raleigh–Durham International Airport]], North Carolina (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 1887–present{{efn|Official records for Raleigh kept January 1887 to May 17, 1944, at downtown and at Raleigh Durham Int'l since May 18, 1944. For more information, see [http://threadex.rcc-acis.org Threadex]}})
| single line = Y
| collapsed = Y
| Jan record high F = 80
| Feb record high F = 85
| Mar record high F = 94
| Apr record high F = 95
| May record high F = 99
| Jun record high F = 105
| Jul record high F = 106
| Aug record high F = 105
| Sep record high F = 104
| Oct record high F = 100
| Nov record high F = 88
| Dec record high F = 81
| year record high F = 106
| Jan avg record high F = 71.9
| Feb avg record high F = 74.4
| Mar avg record high F = 81.6
| Apr avg record high F = 86.4
| May avg record high F = 91.3
| Jun avg record high F = 96.6
| Jul avg record high F = 98.2
| Aug avg record high F = 96.7
| Sep avg record high F = 92.3
| Oct avg record high F = 86.7
| Nov avg record high F = 78.5
| Dec avg record high F = 72.8
| year avg record high F = 99.6
| Jan high F = 51.9
| Feb high F = 55.8
| Mar high F = 63.3
| Apr high F = 72.7
| May high F = 80.0
| Jun high F = 87.4
| Jul high F = 90.8
| Aug high F = 88.7
| Sep high F = 82.5
| Oct high F = 73.0
| Nov high F = 63.0
| Dec high F = 54.7
| year high F = 72.0
| Jan mean F = 41.9
| Feb mean F = 45.0
| Mar mean F = 51.8
| Apr mean F = 60.8
| May mean F = 68.8
| Jun mean F = 76.7
| Jul mean F = 80.5
| Aug mean F = 78.8
| Sep mean F = 72.6
| Oct mean F = 61.7
| Nov mean F = 51.5
| Dec mean F = 44.6
| year mean F = 61.2
| Jan low F = 31.8
| Feb low F = 34.2
| Mar low F = 40.3
| Apr low F = 48.9
| May low F = 57.7
| Jun low F = 66.0
| Jul low F = 70.2
| Aug low F = 68.9
| Sep low F = 62.7
| Oct low F = 50.3
| Nov low F = 40.0
| Dec low F = 34.4
| year low F = 50.4
| Jan avg record low F = 14.0
| Feb avg record low F = 19.2
| Mar avg record low F = 23.7
| Apr avg record low F = 32.2
| May avg record low F = 42.8
| Jun avg record low F = 54.2
| Jul avg record low F = 61.0
| Aug avg record low F = 58.7
| Sep avg record low F = 48.7
| Oct avg record low F = 33.2
| Nov avg record low F = 24.4
| Dec avg record low F = 19.9
| year avg record low F = 12.1
| Jan record low F = −9
| Feb record low F = −2
| Mar record low F = 11
| Apr record low F = 23
| May record low F = 29
| Jun record low F = 38
| Jul record low F = 48
| Aug record low F = 46
| Sep record low F = 37
| Oct record low F = 19
| Nov record low F = 11
| Dec record low F = 0
| year record low F = -9
| precipitation colour = green
| Jan precipitation inch = 3.43
| Feb precipitation inch = 2.78
| Mar precipitation inch = 4.10
| Apr precipitation inch = 3.53
| May precipitation inch = 3.58
| Jun precipitation inch = 3.89
| Jul precipitation inch = 5.02
| Aug precipitation inch = 4.71
| Sep precipitation inch = 5.15
| Oct precipitation inch = 3.37
| Nov precipitation inch = 3.32
| Dec precipitation inch = 3.39
| year precipitation inch = 46.07
| Jan snow inch = 2.6
| Feb snow inch = 1.4
| Mar snow inch = 0.3
| 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 = 0.8
| year snow inch = 5.2
| unit precipitation days = 0.01 in
| Jan precipitation days = 10.1
| Feb precipitation days = 9.3
| Mar precipitation days = 10.7
| Apr precipitation days = 9.5
| May precipitation days = 9.9
| Jun precipitation days = 11.2
| Jul precipitation days = 11.7
| Aug precipitation days = 10.7
| Sep precipitation days = 9.0
| Oct precipitation days = 7.6
| Nov precipitation days = 8.2
| Dec precipitation days = 9.7
| year precipitation days = 117.6
| unit snow days = 0.1 in
| Jan snow days = 1.2
| Feb snow days = 1.2
| Mar snow days = 0.4
| 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 = 0.1
| Dec snow days = 0.5
| year snow days = 3.4
| Jan humidity = 66.5
| Feb humidity = 64.1
| Mar humidity = 63.0
| Apr humidity = 61.7
| May humidity = 71.1
| Jun humidity = 73.6
| Jul humidity = 76.0
| Aug humidity = 77.9
| Sep humidity = 77.1
| Oct humidity = 73.3
| Nov humidity = 69.1
| Dec humidity = 68.5
| year humidity = 70.2
| Jan sun = 163.8
| Feb sun = 173.1
| Mar sun = 228.9
| Apr sun = 250.7
| May sun = 258.4
| Jun sun = 267.7
| Jul sun = 259.5
| Aug sun = 239.6
| Sep sun = 217.6
| Oct sun = 215.4
| Nov sun = 174.0
| Dec sun = 157.6
| Jan percentsun = 53
| Feb percentsun = 57
| Mar percentsun = 62
| Apr percentsun = 64
| May percentsun = 59
| Jun percentsun = 61
| Jul percentsun = 58
| Aug percentsun = 57
| Sep percentsun = 58
| Oct percentsun = 62
| Nov percentsun = 56
| Dec percentsun = 52
| year percentsun = 59
| Jan dew point C = −2.9
| Feb dew point C = −2.1
| Mar dew point C = 2.1
| Apr dew point C = 6.3
| May dew point C = 12.9
| Jun dew point C = 17.5
| Jul dew point C = 19.9
| Aug dew point C = 19.7
| Sep dew point C = 16.4
| Oct dew point C = 9.6
| Nov dew point C = 4.1
| Dec dew point C = −0.5
| Jan uv = 3
| Feb uv = 4
| Mar uv = 6
| Apr uv = 7
| May uv = 9
| Jun uv = 10
| Jul uv = 10
| Aug uv = 9
| Sep uv = 8
| Oct uv = 5
| Nov uv = 3
| Dec uv = 2
| source 1 = [[NOAA]] (relative humidity, dew point, and sun 1961–1990)<ref name = "NWS Raleigh, NC (RAH)">
{{cite web
|url = https://www.weather.gov/wrh/Climate?wfo=rah
|title = NowData – NOAA Online Weather Data
|publisher = [[National Oceanic and Atmospheric Administration]]
|access-date = May 5, 2021
}}
</ref><ref name = "NCDC txt KRDU">
{{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=USW00013722&format=pdf
|publisher = National Oceanic and Atmospheric Administration
|title = Station: Raleigh Durham INTL AP, NC
|work = U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020)
|access-date = May 11, 2021}}</ref><ref name = "WMO 1961–90 KRDU">
{{cite web
|url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP3/72306.TXT
|title = WMO Climate Normals for RALEIGH/RALEIGH-DURHAM, NC 1961–1990
|publisher = National Oceanic and Atmospheric Administration
|access-date = July 25, 2020
}}
</ref>
|source 2 = Weather Atlas (UV Index)<ref name="Weather Atlas">{{cite web
|url=https://www.weather-us.com/en/north-carolina-usa/raleigh-climate
|title=Raleigh, North Carolina, USA – Monthly weather forecast and Climate data
|publisher=Weather Atlas
|access-date=June 29, 2019}}</ref>
| source = 
}}