Editing Northbrook, Illinois (section)

===Climate===
{{Main|Climate of Chicago}}

Due to its proximity to the city, Northbrook's climate shares many of the same traits as Chicago. Northbrook lies in a [[humid continental climate]] zone ([[Köppen climate classification|Köppen]]: ''Dfa'') and experiences four distinct seasons.<ref>{{cite journal|url=http://koeppen-geiger.vu-wien.ac.at/ |title=World Map of the Köppen-Geiger climate classification updated |journal=Meteorologische Zeitschrift |volume=15 |issue=3 |pages=259 |date=November 6, 2008 |access-date=August 12, 2023 |url-status=dead |archive-url=https://web.archive.org/web/20100906034159/http://koeppen-geiger.vu-wien.ac.at/ |archive-date=September 6, 2010 |bibcode=2006MetZe..15..259K |last1=Kottek |first1=Markus |last2=Grieser |first2=Jürgen |last3=Beck |first3=Christoph |last4=Rudolf |first4=Bruno |last5=Rubel |first5=Franz |doi=10.1127/0941-2948/2006/0130 }}</ref> Northbrook receives an average of {{convert|37.82|in|mm}} of [[Precipitation (meteorology)|precipitation]] each year.<ref name="weather">{{cite web |publisher=Yu Media Group |title=Northbrook, IL - Detailed climate information and monthly weather forecast |url=https://www.weather-us.com/en/illinois-usa/northbrook-climate |website=Weather Atlas |access-date=August 13, 2023 |language=en}}</ref> According to MyForecast, Northbrook's record high is 104&nbsp;°F (40&nbsp;°C), and the record low is -24&nbsp;°F (-31.1&nbsp;°C).<ref name="historicalinfo">{{cite web|title=Almanac: Historical Information |url=https://myforecast.co/bin/climate.m?city=15379&metric=false |website=myforecast.co |access-date=August 12, 2023}}</ref> [[Summers]] are hot and humid, with frequent [[heat waves]]. July is the hottest month, and the daily average temperature is 82&nbsp;°F (27.7&nbsp;°C), while the daily low temperatures are around 66&nbsp;°F (18.8&nbsp;°C).<ref>{{cite web|title=Average Weather in July in Northbrook, Illinois, United States - Weather Spark |url=https://weatherspark.com/m/14265/7/Average-Weather-in-July-in-Northbrook-Illinois-United-States |website=weatherspark.com |access-date=August 12, 2023}}</ref> On average, summer temperatures reach at least 90&nbsp;°F (32&nbsp;°C) on as many as 16 days.<ref name="historicalinfo" /> [[Winter (season)|Winters]] are relatively cold and snowy, with [[blizzards]] sometimes occurring, as in [[2011 Groundhog Day blizzard|2011]].<ref>{{cite web|publisher=[[National Oceanic and Atmospheric Administration|NOAA]]|access-date=August 12, 2023|title=NOAA: Extreme Weather 2011 - Groundhog Day Blizzard|url=http://www.noaa.gov/extreme2011/blizzard.html|date=January 6, 2012|archive-url=https://web.archive.org/web/20120106224834/http://www.noaa.gov/extreme2011/blizzard.html|archive-date=January 6, 2012|url-status=dead}}</ref> There are many sunny but cold days in winter. The average winter high from December through March is about 36&nbsp;°F (2.2&nbsp;°C), with January and February being the coldest months; a [[January–February 2019 North American cold wave|polar vortex occurred in January 2019]]. [[Spring (season)|Spring]] and [[autumn]] are mild, short seasons. [[Dew point]] temperatures in the summer range from an average of 56&nbsp;°F (13.3&nbsp;°C) in June to 62&nbsp;°F (16.7&nbsp;°C) in July.<ref name="historicalinfo" /> Like all Chicago suburbs, Northbrook lies within [[USDA]] plant [[hardiness zone]] 5b.<ref>{{cite web|title=USDA Plant Hardiness Zone Map |url=http://planthardiness.ars.usda.gov/PHZMWeb/ |access-date=July 18, 2021 |date=February 27, 2014|archive-url=https://web.archive.org/web/20140227032333/http://planthardiness.ars.usda.gov/PHZMWeb/ |archive-date=February 27, 2014 }}</ref>

{{Weather box
|location = Northbrook, Illinois
|single line = Y
|Jan high F = 32
|Feb high F = 36
|Mar high F = 45
|Apr high F = 57
|May high F = 68
|Jun high F = 78
|Jul high F = 83
|Aug high F = 81
|Sep high F = 74
|Oct high F = 62
|Nov high F = 49
|Dec high F = 36
|Jan low F = 16
|Feb low F = 19
|Mar low F = 28
|Apr low F = 38
|May low F = 47
|Jun low F = 57
|Jul low F = 63
|Aug low F = 62
|Sep low F = 54
|Oct low F = 42
|Nov low F = 33
|Dec low F = 20
|Jan precipitation inch = 1.81
|Feb precipitation inch = 1.80
|Mar precipitation inch = 2.37
|Apr precipitation inch = 3.58
|May precipitation inch = 4.01
|Jun precipitation inch = 3.67
|Jul precipitation inch = 3.63
|Aug precipitation inch = 4.77
|Sep precipitation inch = 3.48
|Oct precipitation inch = 3.24
|Nov precipitation inch = 3.06
|Dec precipitation inch = 2.40
|Jan snow inch = 11
|Feb snow inch = 8
|Mar snow inch = 5
|Apr snow inch = 1
|May snow inch = 0
|Jun snow inch = 0
|Jul snow inch = 0
|Aug snow inch = 0
|Sep snow inch = 0
|Oct snow inch = 0
|Nov snow inch = 1
|Dec snow inch = 7
|source 1 = [[Weather.com]]<ref name=climate>{{cite web
|url=http://www.weather.com/weather/wxclimatology/monthly/graph/USIL0867 |title=Average Weather for Northbrook, IL (English) |access-date=March 28, 2018}}</ref>
|source 2 = US Climate Data<ref>{{cite web |title=Climate Northbrook - Illinois |url=https://www.usclimatedata.com/climate/northbrook/illinois/united-states/usil1430 |website=usclimatedata.com |publisher=US Climate Data 2020 |access-date=December 7, 2020}}</ref>
}}