Editing Eugene, Oregon (section)

==Geography==
[[File:Eugene skyline crop.jpg|thumb|upright=2|alt=The flat-roofed buildings of downtown Eugene in front of Spencer Butte, a prominent forested hill|[[Spencer Butte]] can be seen from much of the city.]]
According to the [[United States Census Bureau]], the city has a total area of {{convert|43.74|sqmi|sqkm|2}}, of which {{convert|43.72|sqmi|sqkm|2}} is land and {{convert|0.02|sqmi|sqkm|2}} is water.<ref name="Gazetteer files">{{cite web |title=US Gazetteer files 2010 |url=https://www.census.gov/geo/www/gazetteer/files/Gaz_places_national.txt |publisher=[[United States Census Bureau]] |access-date=December 21, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120112090031/http://www.census.gov/geo/www/gazetteer/files/Gaz_places_national.txt |archive-date=January 12, 2012}}</ref> Eugene is at an elevation of {{convert|426|ft|0}}.

To the north of downtown is [[Skinner Butte]]. Northeast of the city are the [[Coburg Hills]]. [[Spencer Butte]] is a prominent landmark south of the city. [[Mount Pisgah (Lane County, Oregon)|Mount Pisgah]] is southeast of Eugene and includes the [[Mount Pisgah Arboretum]] and the  [[Howard Buford Recreation Area]], a Lane County Park. Eugene is surrounded by foothills and forests to the south, east, and west, while to the north the land levels out into the Willamette Valley and consists of mostly farmland.

The [[Willamette River|Willamette]] and [[McKenzie River (Oregon)|McKenzie]] Rivers run through Eugene and its neighboring city, [[Springfield, Oregon|Springfield]]. Another important stream is [[Amazon Creek]], whose headwaters are near Spencer Butte. The creek discharges into the [[Long Tom River]] north [[Fern Ridge Reservoir]], maintained for winter flood control by the [[United States Army Corps of Engineers|Army Corps of Engineers]]. The [[Eugene Yacht Club]] hosts a sailing school and sailing regattas at Fern Ridge during summer months.<ref>{{cite web |url=https://www.eugeneyachtclub.org/ |title=Eugene Yacht Club at Fern Ridge Lake |date=2014 |access-date=August 10, 2014 |website=Eugene Yacht Club |archive-date=July 27, 2014 |archive-url=https://web.archive.org/web/20140727055600/http://eugeneyachtclub.org/ |url-status=live }}</ref>

===Neighborhoods===
Eugene has 23 neighborhoods:<ref>{{cite web |title=City of Eugene Neighborhoods |url=https://www.eugene-or.gov/4486/Neighborhoods |url-status= |archive-url= |archive-date= |access-date= |website=eugene-or.gov |publisher=}}</ref>
{{div col |colwidth=18em}}
*[[Bethel, Eugene, Oregon|Bethel]]
*Amazon
*Cal Young
*Churchill
*Downtown
*Fairmount
*Far West
*[[Friendly, Eugene, Oregon|Friendly]]
*Goodpasture Island
*Harlow
*Industrial Corridor
*[[Jefferson Westside, Eugene, Oregon|Jefferson Westside]]
*Laurel Hill
*Northeast
*[[River Road, Oregon|River Road]]
*[[Santa Clara, Eugene, Oregon|Santa Clara]]
*[[Southeast, Eugene, Oregon|Southeast]]
*South University
*Southwest Hills
*Trainsong
*West Eugene
*[[West University, Eugene, Oregon|West University]]
*[[Whiteaker, Eugene, Oregon|Whiteaker]]
{{div col end}}

The River Road and Santa Clara communities, which make up the northwestern part of the city, are neighborhoods within the urban growth boundary of Eugene. However, they are mostly outside of the city limits.{{cn|date=January 2025}}

=== Climate ===
Like the rest of the [[Willamette Valley]], Eugene lies in the [[Marine west coast|Marine West Coast]] climate zone, with [[Mediterranean climate|Mediterranean]] characteristics. Under the Köppen climate classification scheme, Eugene has a warm-summer Mediterranean climate ([[Köppen climate classification|Köppen]]: ''Csb''). Temperatures can vary from cool to warm, with warm, dry summers and cool, wet winters. Spring and fall are also moist seasons, with light rain falling for long periods. The average rainfall is {{convert|40.83|in|mm|sigfig=3}}, with the wettest "rain year" being from July 1973 to June 1974 with {{convert|75.59|in|mm|1}} and the driest from July 2000 to June 2001 with {{convert|20.40|in|mm|1}}.<ref name="NOAA" /> Measurements taken by NOAA over the past four decades have indicated a significant decline in average annual precipitation. From 1981 to 2010 inclusive, the reported annual average precipitation was {{convert|46.1|in|mm|sigfig=3}},<ref>Precipitation figures based on measurements taken at EUG Mahlon Sweet Airport.</ref><ref name="ncei.noaa.gov">{{cite web |url=https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-annualseasonal&timeframe=15&station=USW00024221 |title=NOAA NCEI U.S. Climate Normals Quick Access |access-date=September 29, 2022 |archive-date=May 5, 2021 |archive-url=https://web.archive.org/web/20210505115421/https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-annualseasonal&timeframe=15&station=USW00024221 |url-status=live }}</ref> but for the thirty-year period ending in 2020, the annual average had declined {{convert|5.27|in|mm|sigfig=3}}, to {{convert|40.83|in|mm|sigfig=3}}.<ref>{{cite web |url=https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-annualseasonal&timeframe=30&station=USW00024221 |title=NOAA NCEI U.S. Climate Normals Quick Access |access-date=September 29, 2022 |archive-date=May 5, 2021 |archive-url=https://web.archive.org/web/20210505115421/https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-annualseasonal&timeframe=30&station=USW00024221 |url-status=live }}</ref> The figures from the second half of that period, or 2006 - 2020 inclusive, pointed to a further decline of more than {{convert|4|in|mm|sigfig=3}}, down to an annual average of {{convert|36.58|in|mm|sigfig=3}}.<ref name="ncei.noaa.gov"/>

Winter snowfall does occur, but it is sporadic and rarely accumulates in large amounts: the normal seasonal amount is {{convert|4.9|in|cm}}, but the median is zero.<ref name="NOAA" /> The record snowfall was {{convert|41.7|in|cm}} of accumulation due to a [[pineapple express]] on January 25–29, 1969.<ref name="NOAA" /> Ice storms, like snowfall, are rare, but occur sporadically.

The hottest months are July and August, with a normal monthly mean temperature of {{convert|67.8|to|67.9|°F|°C|1}}, with an average of 16&nbsp;days per year reaching {{convert|90|F|C}}. The coolest month is December, with a mean temperature of {{convert|40.6|°F|1}}, and there are 52 mornings per year with a low at or below freezing, and 2 afternoons with highs not exceeding the freezing mark.<ref name="NOAA" /> The coldest daytime high of the year averages {{convert|32|F|C}}, reaching the freezing point.<ref name="NOAA" />

[[File:Snow in Eugene.JPG|thumb|The result of rare heavy snow in January 2008]]

Eugene's average annual temperature is {{convert|53.1|°F|1}}, and annual precipitation at {{convert|40.83|in|mm|sigfig=3}}.<ref name="NCDC txt KEUG" /> Eugene is slightly cooler on average than [[Portland, Oregon|Portland]]. Despite being located about {{convert|100|mi|sigfig=2}} south and at an only slightly higher elevation, Eugene has a more [[continental climate]] than Portland, less subject to the maritime air that blows inland from the Pacific Ocean via the Columbia River. Eugene's normal annual mean minimum is {{convert|41.9|°F|1}},<ref name="NOAA" /> compared to {{convert|46.2|°F|1}} in Portland;<ref>{{cite web |title=Station Name: OR PORTLAND INTL AP |url=ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00024229.normals.txt |access-date=March 13, 2014 |publisher=National Oceanic and Atmospheric Administration |archive-date=June 17, 2023 |archive-url=https://web.archive.org/web/20230617104829/ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00024229.normals.txt |url-status=live }}</ref> in August, the gap in the normal mean minimum widens to {{convert|51.1|and|58.0|°F|1}} for Eugene and Portland, respectively.<ref name="NOAA" /> Eugene's warmest night annually averages a modest {{convert|62|F|C}}.<ref name="NOAA" /> Average winter temperatures (and summer high temperatures) are similar for the two cities.

Extreme temperatures range from {{convert|-12|°F|0}}, recorded on December 8, 1972, to {{convert|111|°F|0}} on June 27, 2021; the record cold daily maximum is {{convert|19|°F|0}}, recorded on December 13, 1919, while, conversely, the record warm daily minimum is {{convert|71|°F|0}} on July 22, 2006.<ref name="NOAA" />

{{Weather box
| width = auto
| location = [[Eugene Airport]], Oregon (1991–2020 normals,{{Efn|Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.}} snow & sun 1981–2010, extremes 1892–present)
| single line = Y
| collapsed = Y
| Jan record high F = 69
| Feb record high F = 78
| Mar record high F = 80
| Apr record high F = 89
| May record high F = 95
| Jun record high F = 111
| Jul record high F = 106
| Aug record high F = 108
| Sep record high F = 103
| Oct record high F = 94
| Nov record high F = 76
| Dec record high F = 68
| year record high F = 111
| Jan avg record high F = 60.2
| Feb avg record high F = 61.9
| Mar avg record high F = 69.8
| Apr avg record high F = 76.3
| May avg record high F = 83.4
| Jun avg record high F = 89.7
| Jul avg record high F = 97.6
| Aug avg record high F = 97.8
| Sep avg record high F = 92.2
| Oct avg record high F = 78.5
| Nov avg record high F = 65.8
| Dec avg record high F = 59.1
| year avg record high F = 100.6
| Jan high F = 48.1
| Feb high F = 51.5
| Mar high F = 56.6
| Apr high F = 61.3
| May high F = 68.1
| Jun high F = 74.2
| Jul high F = 84.0
| Aug high F = 84.3
| Sep high F = 78.0
| Oct high F = 64.9
| Nov high F = 53.2
| Dec high F = 46.8
| year high F = 64.3
| Jan mean F = 41.4
| Feb mean F = 43.3
| Mar mean F = 46.9
| Apr mean F = 50.7
| May mean F = 56.1
| Jun mean F = 60.9
| Jul mean F = 67.8
| Aug mean F = 67.9
| Sep mean F = 62.9
| Oct mean F = 53.4
| Nov mean F = 45.5
| Dec mean F = 40.6
| year mean F = 53.1
| Jan low F = 34.7
| Feb low F = 35.0
| Mar low F = 37.2
| Apr low F = 40.0
| May low F = 44.0
| Jun low F = 47.6
| Jul low F = 51.7
| Aug low F = 51.5
| Sep low F = 47.8
| Oct low F = 41.8
| Nov low F = 37.7
| Dec low F = 34.3
| year low F = 41.9
| Jan avg record low F = 22.7
| Feb avg record low F = 24.6
| Mar avg record low F = 28.5
| Apr avg record low F = 31.8
| May avg record low F = 34.5
| Jun avg record low F = 38.3
| Jul avg record low F = 44.3
| Aug avg record low F = 43.3
| Sep avg record low F = 38.5
| Oct avg record low F = 29.2
| Nov avg record low F = 24.9
| Dec avg record low F = 21.9
| year avg record low F = 17.1
| Jan record low F = −4
| Feb record low F = −3
| Mar record low F = 18
| Apr record low F = 25
| May record low F = 28
| Jun record low F = 32
| Jul record low F = 39
| Aug record low F = 35
| Sep record low F = 30
| Oct record low F = 17
| Nov record low F = 12
| Dec record low F = −10
| precipitation colour = green
| Jan precipitation inch = 6.05
| Feb precipitation inch = 4.67
| Mar precipitation inch = 4.64
| Apr precipitation inch = 3.32
| May precipitation inch = 2.46
| Jun precipitation inch = 1.23
| Jul precipitation inch = 0.32
| Aug precipitation inch = 0.39
| Sep precipitation inch = 1.39
| Oct precipitation inch = 3.17
| Nov precipitation inch = 5.98
| Dec precipitation inch = 7.21
| year precipitation inch = 40.83
| Jul snow inch = 0.0
| Aug snow inch = 0.0
| Sep snow inch = 0.0
| Oct snow inch = 0.0
| Nov snow inch = 0.0
| Dec snow inch = 1.5
| Jan snow inch = 1.3
| Feb snow inch = 4.3
| Mar snow inch = 0.0
| Apr snow inch = 0.0
| May snow inch = 0.0
| Jun snow inch = 0.0
| year snow inch = 
| unit precipitation days = 0.01 in
| Jan precipitation days = 17.9
| Feb precipitation days = 15.5
| Mar precipitation days = 17.6
| Apr precipitation days = 15.5
| May precipitation days = 11.9
| Jun precipitation days = 7.9
| Jul precipitation days = 2.6
| Aug precipitation days = 2.8
| Sep precipitation days = 5.9
| Oct precipitation days = 11.9
| Nov precipitation days = 17.5
| Dec precipitation days = 18.7
| year precipitation days = 
| unit snow days = 0.1 in
| Jul snow days = 0.0
| Aug snow days = 0.0
| Sep snow days = 0.0
| Oct snow days = 0.0
| Nov snow days = 0.0
| Dec snow days = 0.5
| Jan snow days = 0.6
| Feb snow days = 1.2
| Mar snow days = 0.1
| Apr snow days = 0.0
| May snow days = 0.0
| Jun snow days = 0.0
| year snow days = 
|Jan sun = 133.3
|Feb sun = 115.8
|Mar sun = 167.4
|Apr sun = 201 
|May sun = 254.2
|Jun sun = 270.0
|Jul sun = 337.9
|Aug sun = 341
|Sep sun = 276.0
|Oct sun = 167.4
|Nov sun = 138.0
|Dec sun = 130.2 
| Jan uv =2
| Feb uv =2
| Mar uv =3
| Apr uv =3
| May uv =4
| Jun uv =5
| Jul uv =6
| Aug uv =5
| Sep uv =4
| Oct uv =3
| Nov uv =2
| Dec uv =2
| year uv =
| source 1 = NOAA<ref name = NOAA >{{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 19, 2018 |archive-date=February 17, 2020 |archive-url=https://web.archive.org/web/20200217125347/https://w2.weather.gov/climate/xmacis.php?wfo=pqr |url-status=live }}</ref><ref name = NOAA2>{{cite web |url=https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024221&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL |publisher=National Oceanic and Atmospheric Administration |title=U.S. Climate Normals Quick Access – Station: Eugene Mahlon Sweet AP, OR |access-date=December 30, 2022 |archive-date=December 30, 2022 |archive-url=https://web.archive.org/web/20221230175102/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024221&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL |url-status=live }}</ref><ref name="NCDC txt KEUG">{{cite web |url=ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00094224.normals.txt |publisher=National Oceanic and Atmospheric Administration |title=Station Name: OR ASTORIA RGNL AP |access-date=April 19, 2018 |archive-url=https://web.archive.org/web/20240306053108/ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00094224.normals.txt |archive-date=March 6, 2024}}</ref>
|source 2 = Weather Atlas (UV)<ref>{{cite web |url=https://www.weather-atlas.com/en/oregon-usa/eugene-climate |title=Climate and monthly weather forecast Eugene, OR |access-date=August 16, 2022 |archive-date=August 16, 2022 |archive-url=https://web.archive.org/web/20220816091051/https://www.weather-atlas.com/en/oregon-usa/eugene-climate |url-status=live }}</ref>
}}

====Air quality and allergies====
Eugene is downwind of Willamette Valley grass seed farms.<ref>{{cite web |last=Houtman |first=Nick |date=April 24, 2009 |title=Where grass seed is king |url=https://terra.oregonstate.edu/2009/04/where-grass-seed-is-king/ |access-date=October 22, 2009 |publisher=Oregon State University |archive-date=November 15, 2016 |archive-url=https://web.archive.org/web/20161115071037/http://terra.oregonstate.edu/2009/04/where-grass-seed-is-king/ |url-status=live }}</ref> The combination of summer grass pollen and the confining shape of the hills around Eugene make it "the area of the highest grass pollen counts in the USA (>1,500 pollen grains/m<sup>3</sup> of air)."<ref>Taylor, Phillip E.; Jacobson, Kraig W.; House, James M.; Glovsky, M. Michael. (2007). "Links between Pollen, Atopy and the Asthma Epidemic" ''International Archives of Allergy and Immunology''; 144:162–170</ref> These high pollen counts have led to difficulties for some track athletes who compete in Eugene. In the Olympic trials in 1972, "[[Jim Ryun]] won the 1,500 after being flown in by helicopter because he was allergic to Eugene's grass seed pollen."<ref>{{cite web |last=Borzilleri |first=Meri-Jo |date=June 8, 2007 |title=Hayward Field is as storied as Prefontaine himself |url=https://www.espn.com/olympics/trackandfield/news/story?id=2898193 |access-date=October 22, 2009 |work=ESPN |archive-date=June 29, 2011 |archive-url=https://web.archive.org/web/20110629023327/http://sports.espn.go.com/oly/trackandfield/news/story?id=2898193 |url-status=live }}</ref> Further, six-time Olympian [[Maria Mutola]] abandoned Eugene as a training area "in part to avoid allergies".<ref>{{cite news |last=Bellamy |first=Ron |date=June 20, 2003 |title=Eugene's contingent shrinking |page=C1 |newspaper=The Register-Guard |url=https://pqasb.pqarchiver.com/registerguard/access/352098141.html?FMT=ABS&FMTS=ABS:FT&date=Jun+20%2C+2003&author=Ron+Bellamy+%2F+The+Register-Guard&pub=The+Register+-+Guard&edition=&startpage=C.1&desc=Eugene%27s+contingent+shrinking |access-date=July 6, 2017 |archive-date=March 15, 2013 |archive-url=https://web.archive.org/web/20130315144338/http://pqasb.pqarchiver.com/registerguard/access/352098141.html?FMT=ABS&FMTS=ABS:FT&date=Jun+20%2C+2003&author=Ron+Bellamy+%2F+The+Register-Guard&pub=The+Register+-+Guard&edition=&startpage=C.1&desc=Eugene%27s+contingent+shrinking |url-status=dead }}</ref>