Editing Saint John, New Brunswick (section)

===Climate===
{{update|date=February 2025|part=climate normals; change it from 1981 - 2010 to 1991 - 2020}}
{{climate chart
| Saint John
| −13.6 | −2.7 | 139
| −12.7 | −1.9 |  94
|  −7.3 |  2.3 | 118
|  −1.2 |  8.3 | 104
|   4.0 | 14.8 | 118
|   8.4 | 19.5 | 101
|  11.7 | 22.4 | 102
|  11.6 | 22.2 |  90
|   7.7 | 17.7 | 117
|   2.7 | 11.9 | 125
|  −2.1 |  6.0 | 134
|  −9.7 |  0.3 | 149
| float  = right
| clear  = none
| source = Environment Canada<ref>{{cite web
| publisher =[[Environment Canada]]
| url = http://climate.weather.gc.ca/climate_normals/results_e.html?stnID=6250&prov=&lang=e&dCode=1&dispBack=1&StationName=saint_john&SearchType=Contains&province=ALL&provBut=&month1=0&month2=12
| title = Saint John A
| work = Canadian Climate Normals 1971–2000
|date = 19 January 2011| access-date = September 30, 2013}}</ref>
}}

The climate of Saint John is [[Humid continental climate|humid continental]] ([[Köppen climate classification]] ''[[Humid continental climate#Dfb/Dwb/Dsb: Warm summer subtype|Dfb]]''). The Bay of Fundy never fully freezes, thus moderating the winter temperatures compared with inland locations. Even so, with the prevailing wind blowing from the west (from land to sea), the average January temperature is about {{convert|-8.2|C}}. Summers are usually warm to hot, and daytime temperatures often exceed {{convert|25|C}}. The highest temperature recorded in a given year is usually {{convert|30|or|31|C|0}}. The confluence of cold Bay of Fundy air and inland warmer temperatures often creates onshore winds that bring periods of fog and cooler temperatures during the summer months.

Precipitation in Saint John totals about {{convert|1295|mm|abbr=on}} annually and is well distributed throughout the year, although the late autumn and early winter are typically the wettest time of year. Snowfalls can often be heavy, but rain is as common as snow in winter, and it is not unusual for the ground to be snow-free even in mid-winter.

The highest temperature ever recorded in Saint John was {{convert|34.5|C|0}} on June 20, 2024.<ref>{{cite web | url=https://climate.weather.gc.ca/climate_data/daily_data_e.html?StationID=50310 | title=Daily Data Report for August 2024 - Climate - Environment and Climate Change Canada }}</ref><ref name="CCN"/> The coldest temperature ever recorded was {{convert|-36.7|C|0}} on February 11, 1948.<ref name="CCN"/>

{{Weather box
| location = Saint John ([[Saint John Airport]]), elevation: {{convert|103|m|abbr=on}}, 1981–2010 normals, extremes 1871–present{{efn|Based on station coordinates provided by Environment Canada, climate data recorded near downtown Saint John from January 1871 to September 1970, and at [[Saint John Airport]] from November 1946 to present.}}
| metric first = Y
| single line = Y
| Jan maximum humidex = 16.8
| Feb maximum humidex = 13.3
| Mar maximum humidex = 27.0
| Apr maximum humidex = 23.8
| May maximum humidex = 35.4
| Jun maximum humidex = 42.0
| Jul maximum humidex = 40.3
| Aug maximum humidex = 40.3
| Sep maximum humidex = 39.4
| Oct maximum humidex = 28.3
| Nov maximum humidex = 24.0
| Dec maximum humidex = 19.8
| year maximum humidex = 42.0
| Jan record high C = 14.5
| Feb record high C = 13.3
| Mar record high C = 25.4
| Apr record high C = 22.8
| May record high C = 33.0
| Jun record high C = 34.5
| Jul record high C = 33.7
| Aug record high C = 34.4
| Sep record high C = 33.9
| Oct record high C = 28.9
| Nov record high C = 21.7
| Dec record high C = 16.4
| year record high C = 34.5
| Jan high C = −2.5
| Feb high C = −1.5
| Mar high C = 2.4
| Apr high C = 8.5
| May high C = 15.0
| Jun high C = 19.6
| Jul high C = 22.6
| Aug high C = 22.4
| Sep high C = 18.2
| Oct high C = 12.3
| Nov high C = 6.4
| Dec high C = 0.5
| year high C = 10.3
| Jan mean C = −7.9
| Feb mean C = −7.1
| Mar mean C = -2.5
| Apr mean C = 3.7
| May mean C = 9.5
| Jun mean C = 14.0
| Jul mean C = 17.1
| Aug mean C = 16.8
| Sep mean C = 13.0
| Oct mean C = 7.6
| Nov mean C = 2.3
| Dec mean C = -4.4
| year mean C = 5.2
| Jan low C = −13.3
| Feb low C = −12.6
| Mar low C = −7.4
| Apr low C = −1.2
| May low C = 3.9
| Jun low C = 8.4
| Jul low C = 11.6
| Aug low C = 11.2
| Sep low C = 7.7
| Oct low C = 2.8
| Nov low C = −1.9
| Dec low C = −9.3
| year low C = 0.0
| Jan record low C = −33.2
| Feb record low C = −36.7
| Mar record low C = -30.0
| Apr record low C = −16.7
| May record low C = −7.8
| Jun record low C = −2.2
| Jul record low C = 1.1
| Aug record low C = −0.6
| Sep record low C = −6.7
| Oct record low C = −10.6
| Nov record low C = −16.9
| Dec record low C = −34.4
| year record low C = −36.7
| Jan chill = -44.8
| Feb chill = -44.4
| Mar chill = -39.5
| Apr chill = -26.1
| May chill = -13.9
| Jun chill = -2.6
| Jul chill = 0.0
| Aug chill = 0.0
| Sep chill = -5.7
| Oct chill = -12.9
| Nov chill = -25.9
| Dec chill = -41.9
| year chill = -44.8
| precipitation colour = green
| rain colour = green
| Jan precipitation mm = 123.5
| Feb precipitation mm = 91.0
| Mar precipitation mm = 108.2
| Apr precipitation mm = 105.3
| May precipitation mm = 109.8
| Jun precipitation mm = 101.0
| Jul precipitation mm = 88.4
| Aug precipitation mm = 81.7
| Sep precipitation mm = 105.6
| Oct precipitation mm = 116.4
| Nov precipitation mm = 134.1
| Dec precipitation mm = 130.4
| year precipitation mm = 1295.5
| Jan rain mm = 66.1
| Feb rain mm = 49.0
| Mar rain mm = 66.6
| Apr rain mm = 85.7
| May rain mm = 108.5
| Jun rain mm = 101.0
| Jul rain mm = 88.4
| Aug rain mm = 81.7
| Sep rain mm = 105.6
| Oct rain mm = 115.8
| Nov rain mm = 123.7
| Dec rain mm = 84.0
| year rain mm = 1076.0
| Jan snow cm = 64.3
| Feb snow cm = 48.4
| Mar snow cm = 44.4
| Apr snow cm = 20.0
| May snow cm = 1.2
| Jun snow cm = 0.0
| Jul snow cm = 0.0
| Aug snow cm = 0.0
| Sep snow cm = 0.0
| Oct snow cm = 0.5
| Nov snow cm = 10.8
| Dec snow cm = 49.9
| year snow cm = 239.6
| unit precipitation days = 0.2 mm
| unit rain days = 0.2 mm
| unit snow days = 0.2 cm
| Jan precipitation days = 16.2
| Feb precipitation days = 12.8
| Mar precipitation days = 14.0
| Apr precipitation days = 13.9
| May precipitation days = 13.7
| Jun precipitation days = 12.9
| Jul precipitation days = 11.5
| Aug precipitation days = 10.5
| Sep precipitation days = 10.5
| Oct precipitation days = 11.9
| Nov precipitation days = 14.4
| Dec precipitation days = 15.6
| year precipitation days = 157.9
| Jan rain days = 6.7
| Feb rain days = 5.3
| Mar rain days = 7.6
| Apr rain days = 11.0
| May rain days = 13.6
| Jun rain days = 12.9
| Jul rain days = 11.5
| Aug rain days = 10.5
| Sep rain days = 10.5
| Oct rain days = 11.7
| Nov rain days = 12.5
| Dec rain days = 8.3
| year rain days = 122.1
| Jan snow days = 12.9
| Feb snow days = 10.2
| Mar snow days = 9.4
| Apr snow days = 5.1
| May snow days = 0.5
| Jun snow days = 0.0
| Jul snow days = 0.0
| Aug snow days = 0.0
| Sep snow days = 0.0
| Oct snow days = 0.5
| Nov snow days = 3.9
| Dec snow days = 10.2
| year snow days = 52.6
| Jan sun = 124.9
| Feb sun = 124.5
| Mar sun = 149.9
| Apr sun = 165.9
| May sun = 199.0
| Jun sun = 211.6
| Jul sun = 225.9
| Aug sun = 216.8
| Sep sun = 181.9
| Oct sun = 147.8
| Nov sun = 97.0
| Dec sun = 102.0
| year sun = 1947.3
| Jan percentsun = 44.0
| Feb percentsun = 42.6
| Mar percentsun = 40.7
| Apr percentsun = 41.0
| May percentsun = 43.2
| Jun percentsun = 45.3
| Jul percentsun = 47.7
| Aug percentsun = 49.6
| Sep percentsun = 48.3
| Oct percentsun = 43.4
| Nov percentsun = 33.8
| Dec percentsun = 37.4
| year percentsun = 43.1
| source 1 = [[Environment Canada]]<ref name="CCN">
{{cite web
| publisher =[[Environment Canada]]
| url = http://climate.weather.gc.ca/climate_normals/results_1981_2010_e.html?stnID=6250&lang=e&dCode=1&province=NB&provBut=Go&month1=0&month2=12
| title = Saint John A
| work = Canadian Climate Normals 1981–2010
|date = 31 October 2011| access-date = May 12, 2014}}</ref><ref name= climate >
{{cite web
| publisher =[[Environment Canada]]
| url =ftp://ftp.tor.ec.gc.ca/Pub/Normals/English/NB/
| archive-url =https://web.archive.org/web/20201031190320/ftp://ftp.tor.ec.gc.ca/Pub/Normals/English/NB/
| url-status =dead
| archive-date =2020-10-31
| title = Saint John A
| work = Canadian Climate Normals 1981–2010
| access-date = September 30, 2013}}</ref><ref name="Saint John">
{{cite web
| publisher =[[Environment Canada]]
| url = http://climate.weather.gc.ca/historical_data/search_historic_data_stations_e.html?searchType=stnName&timeframe=1&txtStationName=saint+john&searchMethod=contains&StartYear=1840&EndYear=2016&optLimit=specDate&Year=1871&Month=1&Day=1&selRowPerPage=25
| title = Saint John
| work = Canadian Climate Data
|date = 31 October 2011| access-date = June 26, 2016}}</ref><ref name="March record high humidex" >
{{cite web
| publisher =[[Environment Canada]]
| url = http://climate.weather.gc.ca/climate_data/hourly_data_e.html?hlyRange=1953-01-01%7C2012-06-07&dlyRange=1946-11-01%7C2012-06-09&mlyRange=1947-01-01%7C2008-01-01&StationID=6250&Prov=NB&urlExtension=_e.html&searchType=stnName&optLimit=yearRange&StartYear=1840&EndYear=2016&selRowPerPage=25&Line=3&searchMethod=contains&Month=3&Day=21&txtStationName=saint+john&timeframe=1&Year=2012
| title = Hourly Data Report for March 21, 2012
| work = Canadian Climate Data
|date = 31 October 2011| access-date = June 26, 2016}}</ref><ref name="March 2012" >
{{cite web
| publisher =[[Environment Canada]]
| url = http://climate.weather.gc.ca/climate_data/daily_data_e.html?hlyRange=1953-01-01%7C2012-06-07&dlyRange=1946-11-01%7C2012-06-09&mlyRange=1947-01-01%7C2008-01-01&StationID=6250&Prov=NB&urlExtension=_e.html&searchType=stnName&optLimit=yearRange&StartYear=1840&EndYear=2016&selRowPerPage=25&Line=3&searchMethod=contains&Month=3&Day=21&txtStationName=saint+john&timeframe=2&Year=2012
| title = Daily Data Report for March 2012
| work = Canadian Climate Data
|date = 31 October 2011| access-date = June 26, 2016}}</ref>
| date = February 2016
| source =
}}