Editing Pacifica, California (section)

==Geography==
[[File:Pacifica, California - aerial view.jpg|thumb|upright=0.9|An aerial view of Pacifica's geography. [[w:Pacifica State Beach|Pacifica State Beach]] is just left of upper center.]]

===Topography===
Pacifica straddles [[San Pedro Creek]] which flows from the western slope of [[Sweeney Ridge]]. The far eastern portion of Pacifica includes [[San Andreas Creek]] which flows down the eastern slope of [[Sweeney Ridge]]. The [[Portola expedition]] followed these two creeks in the discovery of San Francisco Bay. [[Calera Creek]] runs through Pacifica Quarry and is protected as ESHA Environmentally Sensitive Habitat.

===Climate===
{{climate chart
|Pacifica, California
|45|58|6.1
|46|60|6.5
|46|61|4.5
|48|64|2.4
|49|67|1.0
|51|69|0.3
|52|69|0.1
|53|71|0.1
|53|72|0.1
|52|70|1.5
|50|64|2.9
|46|59|6.6
|units = imperial
|float = left
|clear = both}}
[[File:Erosion and spring in Pacifica.jpg|upright=0.9|thumb|Erosion and spring]]
Pacifica has a [[warm-summer Mediterranean climate]] ([[Köppen climate classification]] ''Csb'') typical of coastal areas of California.<ref>{{cite web |url=http://www.intellicast.com/Local/History.aspx?location=USCA0822 |title=Pacifica Historic Weather Averages in California (94044) |website=Intellicast |access-date=July 21, 2013 |url-status=dead |archive-url= https://web.archive.org/web/20140909012956/http://www.intellicast.com/Local/History.aspx?location=USCA0822 |archive-date= September 9, 2014 }}</ref>
The [[National Weather Service]] has maintained a cooperative weather station in Pacifica since November 1, 1983. Based on those records, average January temperatures range from {{convert|45.8|to|56.7|°F|°C|abbr=on}} and average September temperatures range from {{convert|53.9|to|71.8|°F|°C|abbr=on}}. There are an average of 3.0 days with highs of {{convert|90|°F|°C|abbr=on}} or higher and an average of 0.2 day with lows of {{convert|32|°F|°C|abbr=on}} or lower. The highest temperature on record was {{convert|102|°F|°C|abbr=on}} on October 5, 1987, and the lowest temperature was {{convert|23|°F|°C|abbr=on}} on December 22, 1990. Annual precipitation averages {{convert|30.29|in|mm}} and has ranged from {{convert|15.88|in|mm}} in 1990 to {{convert|43.17|in|mm}} in 1996. The most rainfall in one month was {{convert|18.05|in|mm}} in February 1998 and the most rainfall in 24 hours was {{convert|5.00|in|mm}} on December 27, 2004. There are an average of 66 days annually with measurable precipitation, most of which falls from October through May. Summer fogs often produce light drizzle in the night and morning hours. Condensation from the fogs also produces [[fog drip]] from trees overnight. No measurable snowfall has been recorded since records began.<ref>{{cite web |url-status=dead |url=http://www.wrcc.dri.edu/summary/Climsmcca.html/ |archive-url=https://web.archive.org/web/20150713101258/http://www.wrcc.dri.edu/summary/Climsmcca.html/|archive-date=July 13, 2015 |title= California |website=Western Regional Climate Center }}</ref> The southeastern portions of the municipality, such as Park Pacifica, are known to be much sunnier than the rest of the city.<ref>{{cite web|url=http://www.cityofpacifica.org/about/visitors/neighborhoods.asp |title= Neighborhoods |website=City of Pacifica, CA |access-date=March 19, 2017 |first1=June |last1=Langhoff |url-status=dead |archive-url= https://web.archive.org/web/20170320151255/http://www.cityofpacifica.org/about/visitors/neighborhoods.asp |archive-date= March 20, 2017 }}</ref>

{{Weather box|width=auto
|location = Pacifica, California (Pacifica 4 SSE averages: 1991–2020)
|single line = Y
|Jan high F = 58.1
|Feb high F = 60.1
|Mar high F = 61.4
|Apr high F = 63.9
|May high F = 66.9
|Jun high F = 68.8
|Jul high F = 69.4
|Aug high F = 71.0
|Sep high F = 72.3
|Oct high F = 70.1
|Nov high F = 64.1
|Dec high F = 58.8
|Jan record high F = 74
|Feb record high F = 78
|Mar record high F = 82
|Apr record high F = 93
|May record high F = 95
|Jun record high F = 98
|Jul record high F = 100
|Aug record high F = 96
|Sep record high F = 98
|Oct record high F = 102
|Nov record high F = 81
|Dec record high F = 73
|year record high F = 102
|year high F = 65.4
|Jan low F = 45.3
|Feb low F = 46.0
|Mar low F = 46.1
|Apr low F = 47.6
|May low F = 49.4
|Jun low F = 50.8
|Jul low F = 52.3
|Aug low F = 53.3
|Sep low F = 53.4
|Oct low F = 52.3
|Nov low F = 49.7
|Dec low F = 46.2
|Jan record low F = 32
|Feb record low F = 27
|Mar record low F = 33
|Apr record low F = 37
|May record low F = 38
|Jun record low F = 44
|Jul record low F = 42
|Aug record low F = 40
|Sep record low F = 45
|Oct record low F = 40
|Nov record low F = 37
|Dec record low F = 23
|year record low F = 23
|year low F = 49.4
|precipitation colour = green
|Jan precipitation inch = 6.14
|Feb precipitation inch = 6.48
|Mar precipitation inch = 4.45
|Apr precipitation inch = 2.36
|May precipitation inch = 1.00
|Jun precipitation inch = 0.25
|Jul precipitation inch = 0.01
|Aug precipitation inch = 0.08
|Sep precipitation inch = 0.11
|Oct precipitation inch = 1.50
|Nov precipitation inch = 2.86
|Dec precipitation inch = 6.64
|year precipitation inch =31.88
|source 1 = <ref>{{cite web| url=https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-monthly&timeframe=30&station=USC00046599 | title=PACIFICA 4 SSE, CALIFORNIA NOAA
|access-date=March 9, 2021}}</ref>
|date=March 9, 2021
|source 2 = <ref>{{cite web| url=https://weatherbase.com/weather/weather.php3?s=995641&cityname=Pacifica-California-United-States-of-America|title=Pacifica, California Travel Weather Averages (Weatherbase)
|access-date=October 3, 2021}}</ref>
}}