Editing Lehigh County, Pennsylvania (section)

===Climate===
{{See also|Climate of Allentown, Pennsylvania}}
Lehigh County's climate falls in the [[humid continental climate]] zone. The variety is hot-summer (''Dfa'') except in the county's higher elevation areas, where it is warm-summer (''Dfb''). Summers are typically hot and muggy, fall and spring are generally mild, and winter is cold. Precipitation is almost uniformly distributed throughout the year.

In [[Allentown, Pennsylvania|Allentown]], January lows average {{convert|-6|C}} and highs average {{convert|1.3|C}}. The lowest officially recorded temperature was {{convert|-26.7|C}} in 1912. July lows average {{convert|17.6|C}} and highs average {{convert|29.2|C}} with an average relative humidity of 82%. The highest temperature on record was {{convert|40.6|C}} in 1966. Early fall and mid-winter are generally driest with October being the driest month with only 74.7&nbsp;mm of average precipitation.<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 |url-status=dead |archive-url=https://web.archive.org/web/20060919144341/http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |archive-date=September 19, 2006 }}</ref>

Snowfall is variable with some winters bringing light snow and others bringing numerous significant snowstorms. Average snowfall is {{convert|82.3|cm|in}} per year,<ref>{{cite web|url=http://lwf.ncdc.noaa.gov/oa/climate/online/ccd/snowfall.html |title=Snowfall – Average Total In Inches |access-date=November 4, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20110619061102/http://www.governor.nh.gov/media/news/2011/061511-hb218.htm |archive-date=June 19, 2011 }}</ref> with the months of January and February receiving the most now with just over {{convert|22.86|cm|in}} in each of these months. Rainfall is generally spread throughout the year with eight to twelve wet days per month,<ref>{{cite web|url=http://www.met.utah.edu/jhorel/html/wx/climate/daysrain.html |title=Average Days of Precipitation, .01&nbsp;cm or more |access-date=November 4, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20061103025303/http://www.met.utah.edu/jhorel/html/wx/climate/daysrain.html |archive-date=November 3, 2006 }}</ref> at an average annual rate of {{convert|110.54|cm|in}}.<ref>{{cite web|url=http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |title=Average Monthly Precipitation |access-date=November 4, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20060919144341/http://www.met.utah.edu/jhorel/html/wx/climate/normrain.html |archive-date=September 19, 2006}}</ref> The [[hardiness zone]] in the majority of the county has increased from 6b to 7a. 6b still exists in some northern and higher areas.<ref>[https://planthardiness.ars.usda.gov/]</ref>

{{Weather box
|location = Allentown, Pennsylvania ([[Lehigh Valley International Airport]]) 1991-2020 normals (Records x-2021)
|single line = Y
|Jan record high F = 72
|Feb record high F = 81
|Mar record high F = 87
|Apr record high F = 93
|May record high F = 97
|Jun record high F = 100
|Jul record high F = 105
|Aug record high F = 100
|Sep record high F = 99
|Oct record high F = 93
|Nov record high F = 81
|Dec record high F = 72
|year record high F = 105
|Jan high F = 38.4
|Feb high F = 41.6
|Mar high F = 50.8
|Apr high F = 63.4
|May high F = 73.5
|Jun high F = 81.9
|Jul high F = 86.4
|Aug high F = 84.3
|Sep high F = 77.4
|Oct high F = 65.5
|Nov high F = 53.8
|Dec high F = 43.1
|year high F= 63.3
|Jan mean F = 30.1
|Feb mean F = 32.4
|Mar mean F = 40.7
|Apr mean F = 51.8
|May mean F = 62.0
|Jun mean F = 70.9
|Jul mean F = 75.6
|Aug mean F = 73.6
|Sep mean F = 66.3
|Oct mean F = 54.6
|Nov mean F = 43.9
|Dec mean F = 35.0
|year mean F= 53.1
|Jan low F = 21.8
|Feb low F = 23.2
|Mar low F = 30.5
|Apr low F = 40.3
|May low F = 50.6
|Jun low F = 59.9
|Jul low F = 64.7
|Aug low F = 62.8
|Sep low F = 55.2
|Oct low F = 43.8
|Nov low F = 34.1
|Dec low F = 26.8
|year low F= 42.8
|Jan record low F = -15
|Feb record low F = -12
|Mar record low F = -5
|Apr record low F = 12
|May record low F = 28
|Jun record low F = 39
|Jul record low F = 46
|Aug record low F = 41
|Sep record low F = 30
|Oct record low F = 21
|Nov record low F = 3
|Dec record low F = -8
|year record low F= -15
|precipitation colour = green
|Jan precipitation inch = 3.30
|Feb precipitation inch = 2.77
|Mar precipitation inch = 3.63
|Apr precipitation inch = 3.67
|May precipitation inch = 3.65
|Jun precipitation inch = 4.40
|Jul precipitation inch = 5.30
|Aug precipitation inch = 4.56
|Sep precipitation inch = 4.84
|Oct precipitation inch = 4.14
|Nov precipitation inch = 3.24
|Dec precipitation inch = 3.86
|year precipitation inch= 47.36
|Jan snow inch = 9.8
|Feb snow inch = 10.8
|Mar snow inch = 6.3
|Apr snow inch = 0.5
|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 = 0.2
|Nov snow inch = 0.9
|Dec snow inch = 4.6
|year snow inch= 33.1
|unit precipitation days = 0.01 in
|Jan precipitation days = 11
|Feb precipitation days = 10
|Mar precipitation days = 11
|Apr precipitation days = 12
|May precipitation days = 12
|Jun precipitation days = 11
|Jul precipitation days = 11
|Aug precipitation days = 10
|Sep precipitation days = 10
|Oct precipitation days = 10
|Nov precipitation days = 9
|Dec precipitation days = 12
|year precipitation days= 129
|unit snow days = 0.1 in
|Jan snow days = 5
|Feb snow days = 4
|Mar snow days = 3
|Apr snow days = 0
|May snow days = 0
|Jun snow days = 0
|Jul snow days = 0
|Aug snow days = 0
|Sep snow days = 0
|Oct snow days = 0
|Nov snow days = 1
|Dec snow days = 3
|year snow days = 16
|source 1 = NOAA<ref name = NOAA>
{{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 = May 11, 2021}}</ref>
}}