Portland, Oregon: Perbedaan antara revisi

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Pada tanggal 28 Juni 2021, Portland mencatat rekor tertinggi sepanjang masa di husu 116 °F (47 °C) dan suhu terendah harian terhangat berada di angka 75 °F (24 °C),<ref>{{cite web|author=[[National Weather Service]], Portland|date=June 28, 2021|title=The Portland Airport officially hit 116°F shortly after 5pm this evening, making this the warmest temperature on record. This breaks yesterday's warmest temperature on record of 112°F. 3 days ago the warmest temperature on record was 107°F, set twice in Aug '81 & once in Jul '65.|url=https://twitter.com/NWSPortland/status/1409699898639872002|publisher=NWS, Portland office|archive-url=https://web.archive.org/web/20210629073228/https://twitter.com/NWSPortland/status/1409699898639872002|archive-date=June 29, 2021|access-date=June 28, 2021|url-status=live}}</ref>{{Primary source inline}}<ref>{{cite web|date=June 26, 2021|title=Portland hits 116 degrees, setting new all-time high record|url=https://www.kgw.com/article/weather/pacific-northeast-heat-wave-could-break-records-over-the-weekend/283-6cb686a4-18f3-496b-9a99-67ee367133ef}}</ref><ref name="NOWData" /><ref>{{cite web|title=SYNOP/BUFR observations. Month summary|url=http://www.meteomanz.com/sy5?l=1&cou=4030&ind=72698&m1=06&y1=2021|website=meteomanz.com|access-date=August 23, 2021}}</ref> selama [[Gelombang panas Amerika Utara Barat 2021|gelombang panas Amerika Utara tahun 2021]]. Suhu 100 °F (38 °C) telah tercatat dalam lima bulan dari Mei hingga September. Rata-rata malam terpanas sepanjang tahun adalah 68 °F (20 °C).<ref name="NOWData" />
 
Musim semi dan musim gugur dapat membawa cuaca yang bervariasi termasuk tekanan tinggi yang membuat suhu melonjak di atas 80 °F (27 °C) dan cuaca dingin yang menurunkan suhu di siang hari ke 40-an °F (4–9 °C). Namun, hari-hari mendung membentang panjang yang dimulai pada pertengahan musim gugur dan berlanjut hingga pertengahan musim semi merupakan yang paling umum. Hujan sering turun sebagai gerimis ringan selama beberapa hari berturut-turut pada suatu waktu, menyumbang rata-rata 155 hari per tahun dengan curah hujan terukur (≥0,01 inci atau 0,25 mm). Suhu telah mencapai 90 °F (32 °C) pada awal 30 April dan hingga 5 Oktober, sedangkan suhu 80 °F (27 °C) telah dapat dicapai pada awal 1 April dan hingga 21 Oktober. Cuaca buruk, seperti [[Guruh|guntur]] dan [[petir]], jarang terjadi dan [[Tornado Portland–Vancouver 1972|tornado]] sangat jarang terjadi, meskipun bukan tidak mungkin hal tersebut terjadi.{{sfn|Mass|2008|p=138}}<ref>{{cite web|title=Why Doesn't the West Coast See Thunderstorms?|url=http://thevane.gawker.com/why-doesnt-the-west-coast-see-thunderstorms-1606295419|archive-url=https://web.archive.org/web/20160427024642/https://thevane.gawker.com/why-doesnt-the-west-coast-see-thunderstorms-1606295419|archive-date=April 27, 2016|access-date=April 19, 2016|url-status=dead}}</ref>{{Weather box|location=Portland, Oregon ([[Portland International Airport|PDX]]), 1991–2020 normal,{{efn|Rata-rata maksimum dan minimum bulanan (yaitu pembacaan suhu tertinggi dan terendah selama satu bulan atau tahun penuh) dihitung berdasarkan data di lokasi tersebut dari tahun 1991 hingga 2020.}} hari bersalju 1981-2010, hari ekstrem 1940–sekarang{{efn|Catatan resmi untuk Portland telah disimpan di PDX sejak 13 Oktober 1940.<ref name = ThreadEx>[http://threadex.rcc-acis.org ThreadEx]</ref> Pada Januari 1996, pengukuran salju untuk PDX dipindahkan ke kantor NWS Portland {{convert|4|mi|abbr=on}} ke timur di 5241 NE 122nd Avenue, Portland, OR 97230-1089.<ref name = "PDX monthly+seasonal snow">{{cite web|title=AIRPORT Portland: Monthly and Seasonal Snowfall (inches)|url=http://www.wrh.noaa.gov/pqr/pdxclimate/pg98.pdf|publisher=NWS Portland, OR|access-date=June 22, 2014}}</ref>}}|collapsed={{{collapsed|}}}|single line=Y|Jan high F=47.5|Feb high F=51.5|Mar high F=56.8|Apr high F=62.0|May high F=69.3|Jun high F=74.3|Jul high F=81.9|Aug high F=82.3|Sep high F=76.7|Oct high F=64.4|Nov high F=53.5|Dec high F=46.9|year high F=63.9|Jan low F=36.2|Feb low F=36.8|Mar low F=39.7|Apr low F=43.7|May low F=49.4|Jun low F=54.1|Jul low F=58.5|Aug low F=58.9|Sep low F=54.1|Oct low F=46.7|Nov low F=40.6|Dec low F=36.2|year low F=46.2|Jan avg record high F=58.1|Feb avg record high F=60.1|Mar avg record high F=69.6|Apr avg record high F=78.4|May avg record high F=86.8|Jun avg record high F=91.7|Jul avg record high F=96.7|Aug avg record high F=96.7|Sep avg record high F=91.2|Oct avg record high F=77.6|Nov avg record high F=63.8|Dec avg record high F=58.3|year avg record high F=100.0|Jan avg record low F=25.1|Feb avg record low F=25.9|Mar avg record low F=30.4|Apr avg record low F=34.8|May avg record low F=40.5|Jun avg record low F=47.3|Jul avg record low F=52.3|Aug avg record low F=51.7|Sep avg record low F=45.7|Oct avg record low F=35.9|Nov avg record low F=29.2|Dec avg record low F=24.9|year avg record low F=20.8|Jan record high F=66|Feb record high F=71|Mar record high F=80|Apr record high F=90|May record high F=100|Jun record high F=116|Jul record high F=107|Aug record high F=107|Sep record high F=105|Oct record high F=92|Nov record high F=73|Dec record high F=65|Jan record low F=−2|Feb record low F=−3|Mar record low F=19|Apr record low F=29|May record low F=29|Jun record low F=39|Jul record low F=43|Aug record low F=44|Sep record low F=34|Oct record low F=26|Nov record low F=13|Dec record low F=6|precipitation colour=green|Jan precipitation inch=5.03|Feb precipitation inch=3.68|Mar precipitation inch=3.97|Apr precipitation inch=2.89|May precipitation inch=2.51|Jun precipitation inch=1.63|Jul precipitation inch=0.50|Aug precipitation inch=0.54|Sep precipitation inch=1.52|Oct precipitation inch=3.42|Nov precipitation inch=5.45|Dec precipitation inch=5.77|year precipitation inch=36.91|Jul snow inch=0|Aug snow inch=0|Sep snow inch=0|Oct snow inch=0|Nov snow inch=0.04|Dec snow inch=1.3|Jan snow inch=1.7|Feb snow inch=1.2|Mar snow inch=0.1|Apr snow inch=0|May snow inch=0|Jun snow inch=0|year snow inch=4.3|unit precipitation days=0.01 in|Jan precipitation days=18.6|Feb precipitation days=15.5|Mar precipitation days=17.7|Apr precipitation days=17.2|May precipitation days=13.0|Jun precipitation days=9.1|Jul precipitation days=3.6|Aug precipitation days=3.6|Sep precipitation days=6.6|Oct precipitation days=13.5|Nov precipitation days=18.3|Dec precipitation days=19.2|year precipitation days=155.8|unit snow days=0.1 in|Jul snow days=0|Aug snow days=0|Sep snow days=0|Oct snow days=0|Nov snow days=0.5|Dec snow days=1.5|Jan snow days=0.7|Feb snow days=1.5|Mar snow days=0.2|Apr snow days=0|May snow days=0|Jun snow days=0|year snow days=4.4|Jan sun=85.6|Jan percentsun=30|Feb sun=116.4|Feb percentsun=40|Mar sun=191.1|Mar percentsun=52|Apr sun=221.1|Apr percentsun=54|May sun=276.1|May percentsun=60|Jun sun=290.2|Jun percentsun=62|Jul sun=331.9|Jul percentsun=70|Aug sun=298.1|Aug percentsun=68|Sep sun=235.7|Sep percentsun=63|Oct sun=151.7|Oct percentsun=45|Nov sun=79.3|Nov percentsun=28|Dec sun=63.7|Dec percentsun=23|year sun=2340.9|year percentsun=52|Jan humidity=80.9|Feb humidity=78.0|Mar humidity=74.6|Apr humidity=71.6|May humidity=68.7|Jun humidity=65.8|Jul humidity=62.8|Aug humidity=64.8|Sep humidity=69.4|Oct humidity=77.9|Nov humidity=81.5|Dec humidity=82.7|year humidity=73.2|Jan dew point C=0.9|Feb dew point C=2.3|Mar dew point C=3.5|Apr dew point C=4.9|May dew point C=7.4|Jun dew point C=9.9|Jul dew point C=11.6|Aug dew point C=12.1|Sep dew point C=10.4|Oct dew point C=7.9|Nov dew point C=4.6|Dec dew point C=1.7|Jan uv=1|Feb uv=2|Mar uv=3|Apr uv=5|May uv=6|Jun uv=7|Jul uv=8|Aug uv=7|Sep uv=5|Oct uv=3|Nov uv=2|Dec uv=1|source 1=NOAA (relative humidity, dewpoint and sun 1961–1990)<ref name = NOWData >{{cite web |url = https://w2.weather.gov/climate/xmacis.php?wfo=pqr |title = NowData – NOAA Online Weather Data |publisher = [[National Oceanic and Atmospheric Administration]] |access-date = April 11, 2016}}</ref><ref name="NOAA txt">{{cite web |url=ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00024229.normals.txt |publisher=National Oceanic and Atmospheric Administration |title=Station Name: OR PORTLAND INTL AP |access-date=March 13, 2014}}</ref><ref name = NOAAsun >{{cite web |url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP4/72698.TXT |title = WMO Climate Normals for PORTLAND OR 1961–1990 |publisher = National Oceanic and Atmospheric Administration |access-date =July 18, 2020}}</ref>|source 2=Weather Atlas <ref name="Weather Atlas">{{cite web |url=https://www.weather-us.com/en/oregon-usa/portland-climate |title=Portland, Oregon, USA - Monthly weather forecast and Climate data |publisher=Weather Atlas |access-date=June 14, 2019 }}</ref> (UV index)}}
Musim semi dan musim gugur dapat membawa cuaca yang bervariasi termasuk tekanan tinggi yang membuat suhu melonjak di atas 80 °F (27 °C) dan cuaca dingin yang menurunkan suhu di siang hari ke 40-an °F (4–9 °C). Namun, hari-hari mendung membentang panjang yang dimulai pada pertengahan musim gugur dan berlanjut hingga pertengahan musim semi merupakan yang paling umum. Hujan sering turun sebagai gerimis ringan selama beberapa hari berturut-turut pada suatu waktu, menyumbang rata-rata 155 hari per tahun dengan curah hujan terukur (≥0,01 inci atau 0,25 mm). Suhu telah mencapai 90 °F (32 °C) pada awal 30 April dan hingga 5 Oktober, sedangkan suhu 80 °F (27 °C) telah dapat dicapai pada awal 1 April dan hingga 21 Oktober. Cuaca buruk, seperti [[Guruh|guntur]] dan [[petir]], jarang terjadi dan [[Tornado Portland–Vancouver 1972|tornado]] sangat jarang terjadi, meskipun bukan tidak mungkin hal tersebut terjadi.{{sfn|Mass|2008|p=138}}<ref>{{cite web|title=Why Doesn't the West Coast See Thunderstorms?|url=http://thevane.gawker.com/why-doesnt-the-west-coast-see-thunderstorms-1606295419|archive-url=https://web.archive.org/web/20160427024642/https://thevane.gawker.com/why-doesnt-the-west-coast-see-thunderstorms-1606295419|archive-date=April 27, 2016|access-date=April 19, 2016|url-status=dead}}</ref>
 
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