Editing Farnham (section)

==Geography==
{{maplink |title= Farnham |frame=yes |frame-width=300 |frame-height=300 |frame-lat=51.215 |frame-long=-0.797 |type=shape |id= Q643160 |stroke-width= 4 |stroke-opacity= 0.6 |fill= #000000 |fill-opacity= 0.0 |zoom=SWITCH:15;13;11 |switch= Farnham centre; town centre, Hale and Mount Pleasant; Farnham Civil Parish }}
Farnham's history and present status are mainly the result of its [[geography]]; a combination of river, streams, fresh water springs and varied soils, together with a temperate climate, was attractive in prehistoric times. The geology of the area continues to influence the town, both in terms of communications, scenic and botanic variety and the main local industries of agriculture and minerals extraction. Farnham Geological Society is an active organisation in the town, and the Museum of Farnham has a collection of geological samples and fossils.<ref>{{cite web |url=http://www.farnhamgeosoc.org.uk/ |title=Farnham Geological Society |publisher=Farnhamgeosoc.org.uk |access-date=27 May 2013 |archive-date=19 June 2018 |archive-url=https://web.archive.org/web/20180619142030/http://www.farnhamgeosoc.org.uk/ |url-status=live }}</ref>

Farnham lies in the valley of the North Branch of the [[River Wey]], which rises near [[Alton, Hampshire|Alton]], merges with the South Branch at [[Tilford]], and joins the [[River Thames]] at [[Weybridge]]. The mainly east–west alignment of the ridges and valleys has influenced the development of road and rail communications. The most prominent [[geology|geological]] feature is the [[chalk]] of the [[North Downs]] which forms a ridge (the [[Hog's Back]]) to the east of the town, and continues through Farnham Park to the north of the town centre, and westwards to form the [[Hampshire Downs]]. The land rises to more than {{convert|180|m|ft|abbr=off}} above sea level (ASL) to the north of the town at Caesar's Camp which, with the northern part of the park, lies on gravel beds. There are a number of [[Sinkhole|swallow holes]] in the park where this [[stratum]] meets the chalk. The historic core of the town lies on gravel beds at an altitude of roughly 70 metres<ref>Ordnance Survey data</ref> (230&nbsp;ft) ASL on an underlying geology of [[Gault Clay]] and [[Upper Greensand]] and the southern part of the town rises to more than {{convert|100|m|ft|abbr=off}} on the [[Lower Greensand]].

===Climate===
Farnham has a temperate maritime climate, free from extreme temperatures, with moderate rainfall and often breezy conditions. The nearest official weather station to Farnham is Alice Holt Lodge, just under {{convert|3+1/2|mi|km|0|abbr=off}} southwest of the town centre.

The highest temperature recorded was {{convert|35.4|°C|°F|abbr=on}},<ref>{{cite web
|url=http://eca.knmi.nl/utils/monitordetail.php?seasonid=13&year=2006&indexid=TXx&stationid=1871
|title=July 2006 Maximum
|access-date=28 February 2011
|archive-date=30 April 2012
|archive-url=https://web.archive.org/web/20120430200604/http://eca.knmi.nl/utils/monitordetail.php?seasonid=13&year=2006&indexid=TXx&stationid=1871
|url-status=live
}}</ref> in July 2006. In an 'average' year, the warmest day would reach {{convert|26.3|°C|°F|abbr=on}},<ref>{{cite web
|url=http://climate-datas-weather.dynalias.org/listenormale-1991-2020-1-p183.php#ss
|title=Annual average warmest day
|access-date=28 January 2021
}}</ref> with 18.1 days<ref>{{cite web
|url=http://climate-datas-weather.dynalias.org/listenormale-1991-2020-1-p183.php#ss
|title=average >25+ days
|access-date=28 January 2021
}}</ref> attaining a temperature of {{convert|25.1|°C|°F|abbr=on}} or higher.

The lowest temperature recorded was {{convert|-14.0|°C|°F|abbr=on}}<ref>{{cite web
|url=http://eca.knmi.nl/utils/monitordetail.php?seasonid=8&year=1986&indexid=TNn&stationid=1871
|title=Feb 1986 Minimum
|access-date=28 February 2011
|archive-date=30 April 2012
|archive-url=https://web.archive.org/web/20120430200619/http://eca.knmi.nl/utils/monitordetail.php?seasonid=8&year=1986&indexid=TNn&stationid=1871
|url-status=live
}}</ref> in February 1986. On average, 57.7 nights of the year will register an air frost.

Annual rainfall averages 821mm,<ref>{{cite web
|url=http://climate-datas-weather.dynalias.org/listenormale-1991-2020-1-p183.php#ss
|title=Average rainfall
|access-date=28 January 2021
}}</ref> with at least 1mm of rain reported on 126.0 days.<ref>{{cite web
|url=http://climate-datas-weather.dynalias.org/listenormale-1991-2020-1-p183.php#ss
|title=Average Raindays
|access-date=28 January 2021
}}</ref> All averages refer to the 1991–2020 observation period.

{{Weather box|location = Alice Holt Lodge, elevation 115m, 1991–2020, extremes 1960-
|collapsed =
|metric first = y
|single line = y
|Jan record high C = 15.0
|Feb record high C = 17.0
|Mar record high C = 21.1
|Apr record high C = 25.8
|May record high C = 27.6
|Jun record high C = 34.2
|Jul record high C = 35.4
|Aug record high C = 35.1
|Sep record high C = 28.9
|Oct record high C = 24.0
|Nov record high C = 18.1
|Dec record high C = 14.7
|year record high C = 35.4
|Jan high C = 7.6
|Feb high C = 8.2
|Mar high C = 11.0
|Apr high C = 14.1
|May high C = 17.5
|Jun high C = 20.3
|Jul high C = 22.5
|Aug high C = 21.9
|Sep high C = 19.0
|Oct high C = 14.8
|Nov high C = 10.5
|Dec high C = 8.0
|year high C =
|Jan low C = 1.3
|Feb low C = 1.3
|Mar low C = 2.4
|Apr low C = 3.9
|May low C = 6.8
|Jun low C = 9.5
|Jul low C = 11.5
|Aug low C = 11.4
|Sep low C = 9.2
|Oct low C = 6.7
|Nov low C = 3.7
|Dec low C = 1.6
|year low C =
|Jan record low C = −13.6
|Feb record low C = −14.0
|Mar record low C = −10.6
|Apr record low C = −6.0
|May record low C = −3.3
|Jun record low C = 0.5
|Jul record low C = 3.5
|Aug record low C = 3.1
|Sep record low C = -0.8
|Oct record low C = -6.0
|Nov record low C = −7.6
|Dec record low C = −12.9
|year record low C = −14.0
|Jan precipitation mm = 89.7
|Feb precipitation mm = 63.8
|Mar precipitation mm = 54.3
|Apr precipitation mm = 57.5
|May precipitation mm = 51.3
|Jun precipitation mm = 51.3
|Jul precipitation mm = 52.2
|Aug precipitation mm = 57.7
|Sep precipitation mm = 60.9
|Oct precipitation mm = 92.2
|Nov precipitation mm = 99.8
|Dec precipitation mm = 90.6
|year precipitation mm = 
|Jan rain days = 13.3
|Feb rain days = 10.8
|Mar rain days = 10.0
|Apr rain days = 9.7
|May rain days = 8.8
|Jun rain days = 8.5
|Jul rain days = 8.7
|Aug rain days = 8.7
|Sep rain days = 9.2
|Oct rain days = 11.8
|Nov rain days = 13.8
|Dec rain days = 12.7
|year rain days= 
|source 1 = Meteoclimat<ref>{{cite web
| url = http://climate-datas-weather.dynalias.org/listenormale-1991-2020-1-p183.php#ss
| title = Aldergrove Climate Period: 1991-2020
| publisher = Meteoclimat
| access-date = 28 January 2021}}</ref>
|date=January 2021|source 2 = https://blog.metoffice.gov.uk/2015/08/03/record-hot-to-record-cold-in-a-july-of-extremes/
}}