Editing Bellingham, Washington (section)

===Climate===
{{climate chart
| Bellingham, Washington
| 34.0 | 46.3 | 4.49
| 34.5 | 48.9 | 2.85
| 37.5 | 52.8 | 3.36
| 41.6 | 57.7 | 2.77
| 47.0 | 63.9 | 2.23
| 51.8 | 67.8 | 1.61
| 55.0 | 72.7 | 0.88
| 54.7 | 73.1 | 1.13
| 49.6 | 68.1 | 2.01
| 43.2 | 58.9 | 3.85
| 37.9 | 51.0 | 5.20
| 34.1 | 45.5 | 4.33
| units=imperial
| float=right
| clear=none
| source=NOAA}}

Bellingham's climate is generally mild and typical of the [[Puget Sound region]]; classified as [[warm-summer Mediterranean]] ([[Köppen climate classification|Köppen]]: ''Csb'') or [[Oceanic climate|oceanic]] ([[Trewartha climate classification|Trewartha]]: ''Do''). The city is strongly influenced by the [[Cascade Range]] and [[Olympic Mountains]]. The Cascades to the east block continental influence, while the Olympics provide a [[rain shadow]] effect that buffers Bellingham from much of the rainfall approaching from the southwest.

Bellingham receives an average annual rainfall of {{convert|34.84|in|mm}}, which is slightly less than nearby Seattle. November is typically the wettest month, with numerous frontal rainstorms. Still, precipitation is distributed throughout the rainy period extending from October through April.<ref>{{Cite web|url=http://countrystudies.us/united-states/weather/washington/bellingham.htm|title=Bellingham Weather - Washington - Average Temperatures and Rainfall|website=countrystudies.us}}</ref>

Bellingham has lowest average sunshine amount of any city in the US.<ref>{{cite web|url=http://www.city-data.com/top2/c475.html |title=Top 101 cities with the lowest average sunshine amount (population 50,000+) |publisher=City-data.com |access-date=January 19, 2013}}</ref> Despite this, Bellingham has fewer overcast days on average than Seattle (SeaTac), Everett (Paine Field) and Olympia.<ref>{{cite web|url=https://climate.washington.edu/cloudcover |title=OWSC: WA Cloud Cover |publisher=OWSC |access-date=February 13, 2019}}</ref> The hottest summer days rarely exceed {{convert|90|°F|°C|abbr=on}} and the warmest temperature on record is {{convert|100|°F|°C|abbr=on}} on August 12, 2021. This is markedly cooler than the record high for Seattle ({{convert|108|°F|°C|abbr=on}}) and most other Washington locations. Drought is rare, although some summers are noticeably drier than others and some normally reliable wells have been known to run dry in August and September. Nevertheless, crops are more frequently ruined by too much rain rather than too little.

Bellingham's proximity to the Fraser River valley occasionally subjects it to a harsh winter weather pattern (termed a 'north-Easter') wherein an upper-level trough drives cold Arctic air from the Canadian interior southwesterly through the [[Fraser River]] Canyon. Such an event was recorded on November 28, 2006, when air temperatures of {{convert|12|°F|°C}} were accompanied by {{convert|30|to|48|mph|km/h}} winds. Wind chill values reached {{convert|-10|°F|°C}} according to [[NOAA]].<ref>Extensive historical weather data for Bellingham can be found at http://www.weatherbase.com/weather/weather.php3?s=61737&refer= {{Webarchive|url=https://web.archive.org/web/20111114001143/http://www.weatherbase.com/weather/weather.php3?s=61737&refer= |date=November 14, 2011 }} Weatherbase.com.</ref> Several days into this pattern, local ponds and smaller lakes freeze solidly enough to allow skating. These outflow winds also can collide with  [[Gulf of Alaska]] moisture and create ice, snow, or heavy rains; the freezing rain can create a phenomenon referred to as a "silver thaw" that produces hazardous roads among other inconveniences.

Its reverse, the "[[Pineapple Express]]", refers to acutely mild autumn and winter spells &ndash; for most of such a spell, an unusually warm and steady wind comes out of the south. It will typically follow several days of Arctic northeast outflow winds, and it can melt significant snow accumulations quickly, pushing drainage systems to their limits.

{{Weather box
|location = Bellingham, Washington ([[Bellingham International Airport]]) 1991–2020,{{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.}} extremes 1949–present
|collapsed = y
|single line = Y
|Jan record high F = 65
|Feb record high F = 72
|Mar record high F = 76
|Apr record high F = 83
|May record high F = 90
|Jun record high F = 99
|Jul record high F = 96
|Aug record high F = 100
|Sep record high F = 89
|Oct record high F = 80
|Nov record high F = 73
|Dec record high F = 67
|year record high F= 100
|Jan avg record high F = 57.3
|Feb avg record high F = 58.3
|Mar avg record high F = 64.0
|Apr avg record high F = 70.9
|May avg record high F = 77.2
|Jun avg record high F = 80.8
|Jul avg record high F = 84.8
|Aug avg record high F = 84.3
|Sep avg record high F = 79.2
|Oct avg record high F = 69.5
|Nov avg record high F = 61.4
|Dec avg record high F = 56.9
|year avg record high F = 87.7
|Jan high F = 46.3
|Feb high F = 48.9
|Mar high F = 52.8
|Apr high F = 57.7
|May high F = 63.9
|Jun high F = 67.8
|Jul high F = 72.7
|Aug high F = 73.1
|Sep high F = 68.1
|Oct high F = 58.9
|Nov high F = 51.0
|Dec high F = 45.5
|year high F = 58.9
|Jan mean F = 40.2
|Feb mean F = 41.7
|Mar mean F = 45.1
|Apr mean F = 49.6
|May mean F = 55.5
|Jun mean F = 59.8
|Jul mean F = 63.9
|Aug mean F = 63.9
|Sep mean F = 58.4
|Oct mean F = 51.1
|Nov mean F = 44.5
|Dec mean F = 39.8
|year mean F = 51.2
|Jan low F = 34.0
|Feb low F = 34.5
|Mar low F = 37.5
|Apr low F = 41.6
|May low F = 47.0
|Jun low F = 51.8
|Jul low F = 55.0
|Aug low F = 54.7
|Sep low F = 49.6
|Oct low F = 43.2
|Nov low F = 37.9
|Dec low F = 34.1
|year low F = 43.4
|Jan avg record low F = 19.7
|Feb avg record low F = 22.9
|Mar avg record low F = 26.9
|Apr avg record low F = 32.1
|May avg record low F = 36.4
|Jun avg record low F = 43.0
|Jul avg record low F = 46.8
|Aug avg record low F = 45.9
|Sep avg record low F = 38.8
|Oct avg record low F = 30.8
|Nov avg record low F = 23.8
|Dec avg record low F = 20.6
|year avg record low F = 15.7
|Jan record low F = −2
|Feb record low F = −2
|Mar record low F = 10
|Apr record low F = 24
|May record low F = 25
|Jun record low F = 37
|Jul record low F = 40
|Aug record low F = 38
|Sep record low F = 28
|Oct record low F = 20
|Nov record low F = 3
|Dec record low F = −1
|year record low F= −2
|precipitation colour = green
|Jan precipitation inch = 4.49
|Feb precipitation inch = 2.85
|Mar precipitation inch = 3.36
|Apr precipitation inch = 2.77
|May precipitation inch = 2.23
|Jun precipitation inch = 1.61
|Jul precipitation inch = 0.88
|Aug precipitation inch = 1.13
|Sep precipitation inch = 2.01
|Oct precipitation inch = 3.85
|Nov precipitation inch = 5.20
|Dec precipitation inch = 4.33
|year precipitation inch = 34.71
|Jan snow inch = 3.4
|Feb snow inch = 2.4
|Mar snow inch = 0.7
|Apr snow inch = trace
|May snow inch = 0.0
|Jun snow inch = 0.0
|Jul snow inch = 0.0
|Aug snow inch = 0.0
|Sep snow inch = 0.0
|Oct snow inch = 0.1
|Nov snow inch = 0.9
|Dec snow inch = 2.9
|year snow inch = 10.4
|unit precipitation days = 0.01 in
|Jan precipitation days = 18.9
|Feb precipitation days = 15.8
|Mar precipitation days = 17.9
|Apr precipitation days = 15.5
|May precipitation days = 12.3
|Jun precipitation days = 10.2
|Jul precipitation days = 5.7
|Aug precipitation days = 6.2
|Sep precipitation days = 11.0
|Oct precipitation days = 16.1
|Nov precipitation days = 19.6
|Dec precipitation days = 19.3
|year precipitation days = 168.5
|unit snow days = 0.1 in
|Jan snow days = 1.8
|Feb snow days = 1.4
|Mar snow days = 0.5
|Apr snow days = 0.1
|May snow days = 0.0
|Jun snow days = 0.0
|Jul snow days = 0.0
|Aug snow days = 0.0
|Sep snow days = 0.0
|Oct snow days = 0.1
|Nov snow days = 0.4
|Dec snow days = 1.5
|year snow days = 5.8
|Jan sun = 62
|Feb sun = 84
|Mar sun = 124
|Apr sun = 180 
|May sun = 217
|Jun sun = 240
|Jul sun = 279
|Aug sun = 248
|Sep sun = 186
|Oct sun = 124
|Nov sun = 60
|Dec sun = 62
|source 1 = NOAA (snowfall 1981–2010)<ref>{{cite web
|url = http://w2.weather.gov/climate/xmacis.php?wfo=sew
|title = NOWData – NOAA Online Weather Data
|publisher = [[National Oceanic and Atmospheric Administration]]
|access-date = November 9, 2016
|archive-date = July 3, 2021
|archive-url = https://web.archive.org/web/20210703081035/https://w2.weather.gov/climate/xmacis.php?wfo=sew
|url-status = dead
}}</ref><ref>
{{cite web
|url=https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024217&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
|access-date = August 16, 2023
|archive-url=https://web.archive.org/web/20230816041827/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024217&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL
|archive-date = August 16, 2023
}}
</ref><ref>{{cite web
|url=ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00024217.normals.txt
|title = WA Bellingham INTL AP
|publisher = [[National Oceanic and Atmospheric Administration]]
|access-date = September 8, 2015
|archive-url=https://web.archive.org/web/20230816041920/ftp://ftp.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USW00024217.normals.txt
|archive-date = August 16, 2023}}</ref>
|source 2 = Weather-US<ref>{{cite web
|url=https://www.weather-us.com/en/washington-usa/bellingham-climate#daylight_sunshine
|title = Monthly weather forecast and climate for Bellingham, WA
|publisher = [[Weather Atlas]]
|access-date = July 9, 2020}}</ref>
}}

====Note====
{{notelist}}