Editing San Mateo, California (section)

==Climate==
[[File:8706 Sweep (27495017135).jpg|thumb|right|The pavilion at Ryder Park]]

San Mateo has a [[Mediterranean]] [[climate]] with warm, dry summers and mild, damp winters. The city is generally shielded from the [[Pacific Ocean]] by the [[Montara Mountain]] block of the [[Santa Cruz Mountains]], but two gaps in the mountains (the San Bruno Gap, between Montara Mountain and [[San Bruno Mountain]]; and the [[Crystal Springs Reservoir|Crystal Springs]] Gap, near where [[State Route 92 (California)|State Route 92]] meets [[State Route 35 (California)|State Route 35]], west of the [[College of San Mateo]]) can channel ocean weather, resulting in gusty afternoon winds that bring fog toward San Mateo in the late afternoon through early morning in the summer.<ref>{{cite book |chapter-url=https://books.google.com/books?id=Wb1cks8Qe4IC&pg=PA40 |title=Weather of the San Francisco Bay Region |author=Gilliam, Harold |edition=2nd |date=2002 |publisher=University of California Press |location=Berkeley |isbn=978-0-520-22989-1 |pages=40–43 |chapter=The Four Seasons: Summer |access-date=March 23, 2015 }}</ref><ref>{{cite web |url=http://www.baaqmd.gov/Divisions/Communications-and-Outreach/Air-Quality-in-the-Bay-Area/Bay-Area-Climatology/Subregions/Peninsula.aspx |title=Bay Area Climatology: Peninsula Subregion |author=<!--Staff writer(s); no by-line.--> |date=October 4, 2010 |website=Bay Area Air Quality Management District |access-date=March 23, 2015 }}</ref>

[[File:Coyote Point Marina and Golf-Course, San Mateo County.jpg|thumb|left|Coyote Point Marina]]

The [[National Weather Service]] maintained a cooperative weather station in San Mateo until 1978; records for the period show that January, the coolest month, had an average maximum of {{convert|57.8|°F|°C|abbr=on}} and an average minimum of {{convert|41.7|°F|°C|abbr=on}}, and September, the warmest month, had an average maximum of {{convert|78.0|°F|°C|abbr=on}} and an average minimum of {{convert|54.2|°F|°C|abbr=on}}. The record maximum temperature was {{convert|109|°F|°C|abbr=on}} on June 14, 1961, and the record minimum temperature was {{convert|25|°F|°C|abbr=on}} on January 5, 1949, and December 9, 1972. Annual precipitation averaged {{convert|18.77|in|mm}} of rainfall, falling on an average of 60 days each year. The wettest year was {{convert|29.77|in|mm}} in 1973 and the driest year was {{convert|11.16|in|mm}} of rainfall in 1953. The most precipitation in one month was {{convert|12.59|in|mm}} of rainfall in December 1955 and the most precipitation in 24 hours was {{convert|3.72|in|mm}} of rainfall on December 23, 1955.<ref>{{Cite web|url=https://weather.com/weather/monthly/l/Ashburn+VA?canonicalCityId=a4c35a3815e10848916ece926537c542e342ae0836e9747a83aa960c129a84f5|title=Ashburn, VA Monthly Weather Forecast |website=Weather.com|access-date=February 13, 2022}}</ref> Based on comparison with the existing NWS office at San Francisco International Airport, San Mateo is generally a few degrees warmer in summer than the airport and a few degrees cooler in winter, while annual precipitation is almost the same at the airport and in San Mateo.<ref>{{Cite web|url=https://wrcc.dri.edu/|title=Western Regional Climate Center|website=Wrcc.dri.edu|access-date=February 13, 2022}}</ref>  In recent years, daily temperature reports for San Mateo from local weather observers have been published in the ''[[San Mateo Times]]'' and the ''[[San Francisco Chronicle]]''.

{{Weather box|width=auto
|single line=y 
|location =  San Mateo, California
|Jan record high F = 78
|Feb record high F = 80
|Mar record high F = 88
|Apr record high F = 89
|May record high F = 98
|Jun record high F = 109
|Jul record high F = 108
|Aug record high F = 103
|Sep record high F = 107
|Oct record high F = 96
|Nov record high F = 89
|Dec record high F = 78
|Jan record low F = 23
|Feb record low F = 29
|Mar record low F = 31
|Apr record low F = 31
|May record low F = 36
|Jun record low F = 40
|Jul record low F = 42
|Aug record low F = 46
|Sep record low F = 40
|Oct record low F = 36
|Nov record low F = 29
|Dec record low F = 25
|Jan high F = 58.0
|Feb high F = 61.5
|Mar high F = 63.9
|Apr high F = 67.0
|May high F = 70.5
|Jun high F = 74.4
|Jul high F = 76.7
|Aug high F = 76.6
|Sep high F = 77.8
|Oct high F = 73.0
|Nov high F = 65.4
|Dec high F = 59.0
| year high F = 
|Jan mean F = 49.7
|Feb mean F = 52.7
|Mar mean F = 54.5
|Apr mean F = 57.0
|May mean F = 60.2
|Jun mean F = 63.5
|Jul mean F = 65.2
|Aug mean F = 65.4
|Sep mean F = 65.8
|Oct mean F = 62.1
|Nov mean F = 55.7
|Dec mean F = 50.8
| year mean F = 58.5
|Jan low F = 41.5
|Feb low F = 43.9
|Mar low F = 45.3
|Apr low F = 46.9
|May low F = 49.9
|Jun low F = 52.7
|Jul low F = 53.8
|Aug low F = 54.2
|Sep low F = 53.8
|Oct low F = 51.2
|Nov low F = 46.2
|Dec low F = 42.6
| year low F = 
|precipitation colour = green
|Jan precipitation inch = 4.64
|Feb precipitation inch = 3.17
|Mar precipitation inch = 2.75
|Apr precipitation inch = 1.31
|May precipitation inch = 0.46
|Jun precipitation inch = 0.13
|Jul precipitation inch = 0.04
|Aug precipitation inch = 0.04
|Sep precipitation inch = 0.16
|Oct precipitation inch = 0.91
|Nov precipitation inch = 2.11
|Dec precipitation inch = 3.39
|year precipitation inch = 
 | unit precipitation days = 0.01 in
| Jan precipitation days = 11
| Feb precipitation days = 10
| Mar precipitation days = 9
| Apr precipitation days = 5
| May precipitation days = 3
| Jun precipitation days = 1
| Jul precipitation days = 0
| Aug precipitation days = 0
| Sep precipitation days = 1
| Oct precipitation days = 3
| Nov precipitation days = 7
| Dec precipitation days = 10
| year precipitation days =60
|source 1 = Western Regional Climate Center<ref name = WRCC>
{{cite web
|url = https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?ca7864
|title = General Climate Summary Tables - SAN MATEO, CALIFORNIA
|publisher= Western Regional Climate Center
|access-date = 31 May 2024}}</ref>
}}