Editing Guam (section)

===Climate===
{{further|Climate change in Guam|List of typhoons in Guam}}
[[File:Ritidian Beach - Guam NWR.jpg|thumb|[[Guam National Wildlife Refuge]] beach at [[Ritidian Point]]]]
Guam has a [[tropical rainforest climate]] on the [[Köppen climate classification|Köppen scale]] (Köppen ''Af''). Its driest month of March almost qualifies as a [[tropical monsoon climate]] (Köppen ''Am''). The weather is generally hot and humid throughout the year with little seasonal temperature variation. Guam is known to have equable temperatures year-round. [[Trade winds]] are fairly constant throughout the year. There is often a weak westerly monsoon influence in the summer months.

Guam has two distinct seasons: Wet and dry season. The dry season runs from January through May. June is the transitional period. The wet season runs from July through November. Guam's average annual rainfall was {{convert|98|in|mm|-1|disp=or|sp=us}} between 1981 and 2010.

The wettest month on record at Guam Airport has been August 1997 with {{convert|38.49|in|mm|1}}. The driest was February 2015 with {{convert|0.15|in|mm|1}}. The wettest calendar year was 1976 with {{convert|131.70|in|mm|1}}. The driest year was in 1998 with {{convert|57.88|in|mm|1}}. The most rainfall in a single day occurred on October 15, 1953, when {{convert|15.48|in|mm|1|disp=or|sp=us}} fell.

The mean high temperature is {{convert|86|°F|°C|disp=or}}. The mean low is {{convert|76|°F|°C|1}}. Temperatures rarely exceed {{convert|90|°F|°C|1}} or fall below {{convert|70|°F|°C|1}}. The [[relative humidity]] commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 percent.<ref name="Climatological Report">{{cite web|url=http://www.nws.noaa.gov/climate/getclimate.php?date=&wfo=guam&sid=GUM&pil=CLM&recent=yes&specdate=2013-03-04+15%3A20%3A44|title=Climatological Report|publisher=National Weather Service|access-date=February 26, 2014|date=February 26, 2014|url-status=dead|archive-url=https://web.archive.org/web/20140307004247/http://www.nws.noaa.gov/climate/getclimate.php?date=&wfo=guam&sid=GUM&pil=CLM&recent=yes&specdate=2013-03-04+15%3A20%3A44|archive-date=March 7, 2014}}</ref>

The highest temperature ever recorded in Guam was {{convert|96|F|C|1}} on April 18, 1971, and April 1, 1990.<ref name="Climatological Report"/> A record low of {{convert|69|F|C}} was set on February 1, 2021.<ref>{{cite web |last1=Lloyd |first1=Bruce |title=Guam sets a 71-year record for cold temperature on Saturday |url=https://www.guampdn.com/story/news/2021/01/31/guam-weather-cold-temperature-record-saturday/4334204001/ |website=Pacific Daily News |access-date=March 18, 2021 |date=February 1, 2021}}</ref> The lowest recorded temperature was 65&nbsp;°F (18.3&nbsp;°C), set on February 8, 1973.

Guam lies in the path of [[typhoon]]s<ref>{{cite web|title=National Weather Service Dedicated Forecast Office in Typhoon Alley|url=http://www.publicaffairs.noaa.gov/releases2000/apr00/noaa00r235.html|publisher=US NOAA NWS|access-date=August 19, 2012|date=April 27, 2000|url-status=dead|archive-url=https://web.archive.org/web/20130107012415/http://www.publicaffairs.noaa.gov/releases2000/apr00/noaa00r235.html|archive-date=January 7, 2013}}</ref> and it is common for the island to be threatened by tropical storms and possible typhoons during the wet season. The highest risk of typhoons is from August through November, where typhoons and tropical storms are most probable in the western Pacific. They can, however, occur year-round. Typhoons that have caused major damage on Guam in the American period include the [[1900 Pacific typhoon season#Guam typhoon|Typhoon of 1900]], [[Typhoon Karen|Karen]] (1962), [[Typhoon Pamela (1976)|Pamela]] (1976), [[Typhoon Paka|Paka]] (1997), [[Typhoon Pongsona|Pongsona]] (2002), and [[Typhoon Mawar|Mawar]] (2023).

Since [[Typhoon Pamela (1976)|Typhoon Pamela]] in 1976, wooden structures have been largely replaced by concrete structures.<ref>{{cite web|url=http://www.rms.com/Catastrophe/Models/Guam.asp|work=Risk Management Solutions|title=Guam Catastrophe Model|access-date=June 16, 2007|url-status=dead|archive-url=https://web.archive.org/web/20110207111227/http://www.rms.com/catastrophe/models/Guam.asp|archive-date=February 7, 2011}}</ref><ref>{{cite web|url=http://www.pacificworlds.com/guam/land/winds.cfm|title=Winds|publisher=PacificWorlds.com|access-date=June 16, 2007|url-status=dead|archive-url=https://web.archive.org/web/20070827132157/http://www.pacificworlds.com/guam/land/winds.cfm|archive-date=August 27, 2007}}</ref> During the 1980s, wooden utility poles began to be replaced by typhoon-resistant concrete and steel poles. After the local Government enforced stricter construction codes, many home and business owners have built their structures out of reinforced concrete with installed [[typhoon shutters]].

{{Weather box 
|location = [[Guam International Airport]] (1991–2020 normals, extremes 1945–present)
|single line = Y
|Jan record high F = 94
|Feb record high F = 93
|Mar record high F = 93
|Apr record high F = 96
|May record high F = 94
|Jun record high F = 95
|Jul record high F = 95
|Aug record high F = 94
|Sep record high F = 94
|Oct record high F = 93
|Nov record high F = 92
|Dec record high F = 91
|year record high F = 96

|Jan avg record high F = 88.4
|Feb avg record high F = 88.5
|Mar avg record high F = 89.2
|Apr avg record high F = 90.2
|May avg record high F = 90.8
|Jun avg record high F = 91.1
|Jul avg record high F = 90.8
|Aug avg record high F = 90.6
|Sep avg record high F = 90.4
|Oct avg record high F = 90.4
|Nov avg record high F = 89.9
|Dec avg record high F = 88.8
|year avg record high F = 92.0

|Jan high F = 85.7
|Feb high F = 85.7
|Mar high F = 86.7
|Apr high F = 87.9
|May high F = 88.5
|Jun high F = 88.5
|Jul high F = 87.7
|Aug high F = 87.0
|Sep high F = 87.0
|Oct high F = 87.2
|Nov high F = 87.4
|Dec high F = 86.6
|year high F = 87.2
|Jan mean F = 80.3
|Feb mean F = 80.1
|Mar mean F = 81.0
|Apr mean F = 82.3
|May mean F = 83.0
|Jun mean F = 83.1
|Jul mean F = 82.2
|Aug mean F = 81.5
|Sep mean F = 81.5
|Oct mean F = 81.7
|Nov mean F = 82.2
|Dec mean F = 81.6
|year mean F = 81.7
|Jan low F = 75.0
|Feb low F = 74.6
|Mar low F = 75.4
|Apr low F = 76.7
|May low F = 77.5
|Jun low F = 77.7
|Jul low F = 76.8
|Aug low F = 76.1
|Sep low F = 76.0
|Oct low F = 76.3
|Nov low F = 77.0
|Dec low F = 76.5
|year low F = 76.3

|Jan avg record low F = 71.6
|Feb avg record low F = 71.4
|Mar avg record low F = 71.9
|Apr avg record low F = 73.3
|May avg record low F = 74.1
|Jun avg record low F = 74.6
|Jul avg record low F = 73.8
|Aug avg record low F = 73.4
|Sep avg record low F = 73.3
|Oct avg record low F = 73.4
|Nov avg record low F = 73.9
|Dec avg record low F = 73.3
|year avg record low F = 70.2

|Jan record low F = 66
|Feb record low F = 65
|Mar record low F = 66
|Apr record low F = 68
|May record low F = 70
|Jun record low F = 70
|Jul record low F = 70
|Aug record low F = 70
|Sep record low F = 70
|Oct record low F = 67
|Nov record low F = 68
|Dec record low F = 68
|year record low F = 65
|precipitation colour = green
|Jan precipitation inch = 5.34
|Feb precipitation inch = 4.15
|Mar precipitation inch = 2.77
|Apr precipitation inch = 3.50
|May precipitation inch = 4.45
|Jun precipitation inch = 6.51
|Jul precipitation inch = 12.25
|Aug precipitation inch = 17.66
|Sep precipitation inch = 15.17
|Oct precipitation inch = 12.73
|Nov precipitation inch = 8.29
|Dec precipitation inch = 5.30
|year precipitation inch = 98.12
|unit precipitation days = 0.01 in
|Jan precipitation days = 20.1
|Feb precipitation days = 18.0
|Mar precipitation days = 18.3
|Apr precipitation days = 18.9
|May precipitation days = 19.7
|Jun precipitation days = 23.2
|Jul precipitation days = 26.0
|Aug precipitation days = 25.9
|Sep precipitation days = 25.1
|Oct precipitation days = 25.4
|Nov precipitation days = 23.9
|Dec precipitation days = 22.7
|year precipitation days = 267.2
|Jan humidity = 83.7
|Feb humidity = 81.9
|Mar humidity = 83.1
|Apr humidity = 82.0
|May humidity = 82.7
|Jun humidity = 82.7
|Jul humidity = 87.3
|Aug humidity = 88.7
|Sep humidity = 88.8
|Oct humidity = 88.3
|Nov humidity = 86.6
|Dec humidity = 83.0
|year humidity = 84.9
|Jan sun = 176.0
|Feb sun = 173.7
|Mar sun = 216.4
|Apr sun = 214.0
|May sun = 219.9
|Jun sun = 193.8
|Jul sun = 156.1
|Aug sun = 142.2
|Sep sun = 132.7
|Oct sun = 132.6
|Nov sun = 135.0
|Dec sun = 143.4
|year sun = 2035.8
|Jan percentsun = 50
|Feb percentsun = 53
|Mar percentsun = 58
|Apr percentsun = 57
|May percentsun = 56
|Jun percentsun = 50
|Jul percentsun = 39
|Aug percentsun = 37
|Sep percentsun = 36
|Oct percentsun = 36
|Nov percentsun = 39
|Dec percentsun = 41
|year percentsun = 46
|source 1 = [[NOAA]] (relative humidity and sun 1961–1990)<ref name= NOAA>{{cite web
| url = https://www.weather.gov/wrh/Climate?wfo=gum
| title = NowData - NOAA Online Weather Data
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021
| archive-date = September 6, 2021
| archive-url = https://web.archive.org/web/20210906150411/https://www.weather.gov/wrh/Climate?wfo=gum
| url-status = live
}}</ref><ref name=NCEI>{{cite web
| url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=GQW00041415&format=pdf
| title = Station: Guam INTL AP, GU GQ
| work = U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020)
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021
| archive-date = September 11, 2021
| archive-url = https://web.archive.org/web/20210911151301/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=GQW00041415&format=pdf
| url-status = live
}}</ref><ref name=NOAAsun>
{{cite web
| archive-url = https://web.archive.org/web/20210911151125/https://www.ncei.noaa.gov/pub/data/normals/WMO/1961-1990/TABLES/REG__V/U1/91217.TXT
| archive-date = September 11, 2021
| url = https://www.ncei.noaa.gov/pub/data/normals/WMO/1961-1990/TABLES/REG__V/U1/91217.TXT
| title = WMO Climate Normals for Guam/Marshall Islands, PI 1961–1990
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021}}</ref> 
}}