Editing Atlanta (section)

===Climate===
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| footer            = [[Autumn leaf color|Fall foliage]] and an early-winter snowfall in [[Piedmont Park]]
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Under the [[Köppen climate classification|Köppen classification]], Atlanta has a [[humid subtropical climate]] (''Cfa'')<ref>{{cite web|url=https://www.researchgate.net/publication/228553732|title=Impact of Climate Change on Buildings|website=ResearchGate|language=en|access-date=December 2, 2018}}</ref> with generous precipitation year-round, typical for the [[Upland South]]. The city is situated in [[Hardiness zone|USDA Plant Hardiness Zone]] 8a, with the northern and western suburbs, as well as part of Midtown transitioning to 7b.<ref>{{cite web|url=https://planthardiness.ars.usda.gov/PHZMWeb/Maps.aspx|title=View Maps – USDA Plant Hardiness Zone Map|website=planthardiness.ars.usda.gov|access-date=June 28, 2019|archive-date=March 30, 2019|archive-url=https://web.archive.org/web/20190330021508/https://planthardiness.ars.usda.gov/PHZMWeb/Maps.aspx|url-status=dead}}</ref> Summers are hot and humid, with temperatures somewhat moderated by the city's elevation. Winters are overall mild but variable, occasionally susceptible to [[Winter storm|snowstorms]] even if in small quantities on several occasions, unlike the central and southern portions of the state.<ref>{{cite web |url=http://www.sercc.com/ClimateoftheSoutheastUnitedStates.pdf |title=Climate of the Southeast of the United States |publisher=National Climate Assessment Regional Technical Input Report Series |page=27 |access-date=July 18, 2020 |archive-date=March 28, 2019 |archive-url=https://web.archive.org/web/20190328213706/https://www.sercc.com/ClimateoftheSoutheastUnitedStates.pdf |url-status=dead }}</ref><ref>{{cite web|url=http://www.sercc.com/climateinfo/historical/avgsnowfall.html|title=Average Total Snowfall (inches) for Selected Cities in the Southeast {{pipe}} Welcome – Southeast Regional Climate Center|publisher=Sercc.com|access-date=June 10, 2013|archive-date=April 17, 2013|archive-url=https://web.archive.org/web/20130417204503/http://www.sercc.com/climateinfo/historical/avgsnowfall.html|url-status=dead}}</ref> Warm air from the [[Gulf of Mexico]] can bring spring-like highs while strong Arctic air masses can push lows into the teens&nbsp;°F (−7 to −12&nbsp;°C).

July averages {{convert|80.9|°F|1}}, with high temperatures reaching {{convert|90|°F|0}} on an average of 47 days per year, though {{convert|100|°F|0}} readings are not seen most years.<ref name="NCDC txt KATL"/><!--22 years out of POR since 1878 and 5 out of the current 1981–2010 normals period--> January averages {{convert|44.8|°F|1}}, with temperatures in the suburbs slightly cooler due largely to the [[urban heat island]] effect. Lows at or below freezing can be expected 36 nights annually,<ref name = "NOWData NWS Peachtree City, GA (FFC) - ATLthr"/> but the last occurrences of temperatures below {{convert|10|°F|0}} were [[December 2022 North American winter storm|December 24, 2022]],<ref name = "NOWData NWS Peachtree City, GA (FFC) - ATLthr"/> and [[Early 2014 North American cold wave|January 2014]], eight years apart. Extremes range from {{convert|-9|°F|0}} on [[Great Blizzard of 1899|February 13, 1899]] to {{convert|106|°F|0}} on [[Summer 2012 North American heat wave|June 30, 2012]].<ref name = "NOWData NWS Peachtree City, GA (FFC) - ATLthr"/> Average dewpoints in the summer range from {{convert|17.6|°C|order=flip}} in June to {{convert|19.9|°C|order=flip}} in July.<ref name = noaasun/>

Typical of the southeastern U.S., Atlanta receives abundant rainfall that is evenly distributed throughout the year, though late spring and early fall are somewhat drier. The average annual precipitation is {{convert|50.43|in|mm|abbr=on}}, while snowfall is typically light and rare with a normal of {{convert|2.2|in|cm|1}} per winter.<ref name = "NOWData NWS Peachtree City, GA (FFC) - ATLthr"/> The heaviest single snowfall occurred on January 23, 1940, with around {{convert|10|in|cm|0}} of snow.<ref>{{cite web|url=http://www.ourgeorgiahistory.com/chronpop/1000010|publisher=Our Georgia History|title=Atlanta, Georgia (1900–2000)|access-date=April 2, 2006|archive-date=March 27, 2006|archive-url=https://web.archive.org/web/20060327073140/http://www.ourgeorgiahistory.com/chronpop/1000010|url-status=dead}}</ref> However, [[ice storm]]s usually cause more problems than snowfall does, the most severe occurring on January 7, 1973.<ref>{{Cite web|url=https://www.cnn.com/2014/02/13/us/atlanta-1973-ice-storm|title=This is how bad it could have been: Atlanta's crippling ice storm of 1973|last=Goldberg|first=Steve|date=February 14, 2014|website=[[CNN]]|access-date=August 13, 2022}}</ref> Tornadoes are rare in the city itself, but the [[2008 Atlanta tornado outbreak|March 14, 2008, EF2 tornado]] damaged prominent structures in downtown Atlanta.<ref>{{Cite web|url=https://www.11alive.com/article/news/local/march-14-downtown-atlanta-tornado-anniversary/85-3476c9f6-ef64-45ab-b73d-0676f6d24e00|title=14 years ago, a deadly tornado tore through downtown Atlanta|date=March 14, 2022|website=11alive.com|access-date=August 13, 2022}}</ref>
{{Atlanta weatherbox}}

{|style="width:100%;text-align:center;line-height:1.2em;margin-left:auto;margin-right:auto" class="wikitable mw-collapsible"
|-
!Colspan=14|Climate data for Atlanta
|-
!Month
!Jan
!Feb
!Mar
!Apr
!May
!Jun
!Jul
!Aug
!Sep
!Oct
!Nov
!Dec
!style="border-left-width:medium"|Year
|-
!Mean daily daylight hours
| style="background:#f0f011; color:#000;"|10.2
| style="background:#f7f722; color:#000;"|11.0
| style="background:#ff3; color:#000;"|12.0
| style="background:#ff4; color:#000;"|13.1
| style="background:#ff5; color:#000;"|13.9
| style="background:#ff5; color:#000;"|14.4
| style="background:#ff5; color:#000;"|14.1
| style="background:#ff4; color:#000;"|13.4
| style="background:#ff3; color:#000;"|12.4
| style="background:#f7f722; color:#000;"|11.3
| style="background:#f0f011; color:#000;"|10.4
| style="background:#f0f011; color:#000;"|9.9
| style="background:#ff3; color:#000; border-left-width:medium;"|12.175
|-
!Average [[Ultraviolet index]]
| style="background:#f7e400; color:#000;"|3
| style="background:#f7e400; color:#000;"|5
| style="background:#f85900; color:#000;"|6
| style="background:#d8001d; color:#000;"|8
| style="background:#d8001d; color:#000;"|10
| style="background:#7c33dd; color:#000;"|11
| style="background:#7c33dd; color:#000;"|11
| style="background:#d8001d; color:#000;"|10
| style="background:#d8001d; color:#000;"|8
| style="background:#f85900; color:#000;"|6
| style="background:#f7e400; color:#000;"|4
| style="background:#f7e400; color:#000;"|3
| style="background:#f85900; color:#000; border-left-width:medium;"|6.8
|-
!Colspan=14 style="background:#f8f9fa;font-weight:normal;font-size:95%;"|Source: Weather Atlas<ref name="Weather Atlas">{{cite web |url=https://www.weather-us.com/en/georgia-usa/atlanta-climate |title=Atlanta, Georgia, USA – Monthly weather forecast and Climate data |publisher=Weather Atlas |access-date=January 23, 2019 }}</ref>
|}