Editing Chelmsford (section)

===Climate===
As with most of the UK, Chelmsford has a [[oceanic climate|temperate oceanic climate]] (''Cfb'' in the [[Köppen climate classification]]), however due to its proximity to continental Europe, Chelmsford enjoys warm summers and cool but not cold winters, with a relatively narrow annual temperature range and few extremes of temperature. Being in the southeast of England, the city enjoys a warmer climate than most of the United Kingdom and is one of the driest areas in the country. The nearest [[met office]] weather station is in [[Writtle]], {{convert|2|mi|km|abbr=off|0}} west of the city centre.

The record highest temperature recorded in Chelmsford was {{convert|39.1|C|F}} on 19 July 2022<ref>{{cite web | url=https://www.chelmervillage-weather.co.uk/FreshWDLmaster.html | title=FreshWDL }}</ref> beating the previous record of {{convert|37.7|C|F}} which was set on 25 July 2019.

The coldest temperature recorded in Chelmsford was {{convert|-20.6|C|F}} on 29 January 1947. A low of {{convert|-18.0|C|F}} was recorded during December 1981, and more recently the temperature fell to {{convert|-13.0|C|F}} on 20 December 2010. [[Frost]] is common, occurring on an average of 53 nights of the year.

Rainfall averages 591.8&nbsp;mm a year, with daily totals of over 1&nbsp;mm falling on 108.1 days of the year. Thunderstorms are rare and mostly occur during July and August. All averages refer to the 30-year observation period 1981–2010.

Chelmsford was struck by a F1 [[tornado]] on 23 November 1981 as part of the record-breaking nationwide [[1981 United Kingdom tornado outbreak|United Kingdom tornado outbreak]] on that day causing some damage in the city centre.<ref>{{cite web|url=http://www.eswd.eu/cgi-bin/eswd.cgi|title=European Severe Weather Database|website=eswd.eu}}</ref>

{{Weather box
|location = [[Writtle]],{{efn|Weather station is located {{convert|2|mi|0|abbr=out}} from the Chelmsford city centre.}} elevation: {{convert|32|m|ft|0|abbr=on}}, 1981–2010 normals, extremes 1960–present
| collapsed    = 
| metric first = y
| single line  = y
| Jan record high C = 15.1
| Feb record high C = 18.4
| Mar record high C = 22.8
| Apr record high C = 27.0
| May record high C = 30.0
| Jun record high C = 33.6
| Jul record high C = 39.1
| Aug record high C = 35.7
| Sep record high C = 32.1
| Oct record high C = 28.6
| Nov record high C = 18.5
| Dec record high C = 16.6
| Jan high C = 7.4
| Feb high C = 7.7
| Mar high C = 10.7
| Apr high C = 13.6
| May high C = 17.0
| Jun high C = 20.2
| Jul high C = 22.9
| Aug high C = 22.7
| Sep high C = 19.3
| Oct high C = 15.0
| Nov high C = 10.5
| Dec high C = 7.7
| year high C = 14.6
| Jan mean C = 4.5
| Feb mean C = 4.4
| Mar mean C = 6.7
| Apr mean C = 8.7
| May mean C = 11.9
| Jun mean C = 15.0
| Jul mean C = 17.5
| Aug mean C = 17.3
| Sep mean C = 14.5
| Oct mean C = 11.1
| Nov mean C = 7.2
| Dec mean C = 4.8
| year mean C = 10.3
| Jan low C = 1.5
| Feb low C = 1.0
| Mar low C = 2.7
| Apr low C = 3.8
| May low C = 6.8
| Jun low C = 9.8
| Jul low C = 12.0
| Aug low C = 11.8
| Sep low C = 9.7
| Oct low C = 7.1
| Nov low C = 3.9
| Dec low C = 1.8
| year low C = 6.0
| Jan record low C = -20.6
| Feb record low C = -13.3
| Mar record low C = -11.1
| Apr record low C = -6.1
| May record low C = -2.8
| Jun record low C = -1.7
| Jul record low C = 2.2
| Aug record low C = 0.6
| Sep record low C = -1.1
| Oct record low C = -6.7
| Nov record low C = -8.1
| Dec record low C = -18.0
| precipitation colour = green
| Jan precipitation mm = 53.2
| Feb precipitation mm = 39.2
| Mar precipitation mm = 40.2
| Apr precipitation mm = 41.6
| May precipitation mm = 48.7
| Jun precipitation mm = 49.9
| Jul precipitation mm = 44.3
| Aug precipitation mm = 51.7
| Sep precipitation mm = 48.6
| Oct precipitation mm = 64.1
| Nov precipitation mm = 58.0
| Dec precipitation mm = 52.3
| year precipitation mm = 591.8
| unit precipitation days = 1.0 mm
| Jan precipitation days = 10.8
| Feb precipitation days = 8.6
| Mar precipitation days = 9.2
| Apr precipitation days = 9.2
| May precipitation days = 8.7
| Jun precipitation days = 8.5
| Jul precipitation days = 7.3
| Aug precipitation days = 7.7
| Sep precipitation days = 7.8
| Oct precipitation days = 10.1
| Nov precipitation days = 9.9
| Dec precipitation days = 10.2
| year precipitation days = 108.1
| Jan sun = 58.0
| Feb sun = 76.1
| Mar sun = 112.4
| Apr sun = 165.7
| May sun = 196.6
| Jun sun = 198.2
| Jul sun = 209.9
| Aug sun = 204.0
| Sep sun = 147.4
| Oct sun = 113.9
| Nov sun = 68.7
| Dec sun = 47.4
| year sun = 1598.2
| source 1 = [[Met Office]]<ref name="Met Averages">{{cite web |url=https://www.metoffice.gov.uk/research/climate/maps-and-data/uk-climate-averages/u10q3cdwd|title= Writtle 1981–2010 averages |access-date=22 December 2020|publisher=Met Office}}</ref>
| source 2 = [[Royal Netherlands Meteorological Institute|KNMI]]<ref>{{cite web| url = https://eca.knmi.nl//download/millennium/millennium.php| title = Indices Data – Writtle STAID 1845| access-date = 22 December 2020| publisher = [[KNMI (institute)|KNMI]]| archive-date = 9 July 2018| archive-url = https://web.archive.org/web/20180709010608/https://eca.knmi.nl//download/millennium/millennium.php| url-status = dead}}</ref>

}}