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=== Climate === {{Main|Climate of Allentown, Pennsylvania}} Under the [[Köppen climate classification]], Allentown falls within the [[humid continental climate|hot-summer humid continental climate]] (''Dfa'') if the {{convert|0|°C}} isotherm is used or the [[humid subtropical climate]] (''Cfa'') if the {{convert|-3|°C}} isotherm is used. Summers are typically warm and muggy. Fall and spring are generally mild. Winter is cool to cold. Precipitation is almost uniformly distributed throughout the year. The average temperature in January is {{convert|30.1|°F|1}} and the lowest officially-recorded temperature was {{convert|-15|°F|0}} on [[1994 North American cold wave|January 21, 1994]].<ref name=nws>{{cite web |url=https://w2.weather.gov/climate/xmacis.php?wfo=phi |title=NowData – NOAA Online Weather Data |publisher=National Oceanic and Atmospheric Administration |access-date=August 8, 2021 |archive-date=March 5, 2012 |archive-url=https://web.archive.org/web/20120305104542/https://w2.weather.gov/climate/xmacis.php?wfo=phi |url-status=live}}</ref> July averages {{convert|75.6|°F|1}} and the highest temperature on record was {{convert|105|°F|0}} on July 3, 1966.<ref name=nws/><ref>{{cite web |url=http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |title=Normal Monthly Precipitation, Inches |access-date=November 4, 2006 |archive-url=https://web.archive.org/web/20061113222938/http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |archive-date=November 13, 2006 |url-status=dead}}</ref> January temperatures average below freezing. Seven months average above {{convert|50|°F|1}}, and two months average above {{convert|71.6|°F|1}}. Snowfall is variable with some winters bringing light snow and others bringing multiple and significant snowstorms. Average snowfall is {{convert|33.1|in|cm|0}} seasonally<ref>{{cite web |url=http://lwf.ncdc.noaa.gov/oa/climate/online/ccd/snowfall.html |archive-url=https://web.archive.org/web/20020219075528/http://lwf.ncdc.noaa.gov/oa/climate/online/ccd/snowfall.html |url-status=dead |archive-date=February 19, 2002 |title=Snowfall – Average Total In Inches |access-date=November 4, 2006}}</ref> with February receiving the highest snowfall at just under {{convert|11|in|mm}}. Rainfall is generally spread throughout the year with eight to 12 days of precipitation monthly<ref>{{cite web |url=http://www.met.utah.edu/jhorel/html/wx/climate/daysrain.html |title=Average Days of Precipitation, .01 cm or more |access-date=November 4, 2006 |archive-url=https://web.archive.org/web/20061103025303/http://www.met.utah.edu/jhorel/html/wx/climate/daysrain.html |archive-date=November 3, 2006 |url-status=dead}}</ref> at an average annual rate of {{convert|110.5|cm|in|order=flip}}.<ref>{{cite web |url=http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |title=Average Monthly Precipitation |access-date=November 4, 2006 |archive-url=https://web.archive.org/web/20061113222938/http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |archive-date=November 13, 2006 |url-status=dead}}</ref> Allentown falls under the [[United States Department of Agriculture|U.S. Department of Agriculture]]'s 6b Plant [[hardiness zone]].<ref>{{cite web |url=http://planthardiness.ars.usda.gov/PHZMWeb/ |title=USDA Plant Hardiness Zone Map |author=Agricultural Research Center, PRISM Climate Group Oregon State University |website=[[United States Department of Agriculture]] |access-date=February 24, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140227032333/http://planthardiness.ars.usda.gov/PHZMWeb/ |archive-date=February 27, 2014}}</ref> {{Allentown, Pennsylvania weatherbox}}
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