Bothell West weather in December

In December, Bothell West sees average daytime highs of 45°F and overnight lows near 38°F, with 7.1 in of precipitation across 17.9 wet days and about 8.3 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 45°F through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 30 min at the start of December to 8 h 12 min by month's end. Set against the rest of the year, December is Bothell West's 12th-clearest and 1st-windiest month. For the whole year in context, see Bothell West's year-round climate.

Daytime high
45°
12th warmest
Overnight low
38°
1st coldest
Precipitation
7.1 in
17.9 wet days
Daylight
8 h 12 min
7:59 AM – 4:12 PM
Cloud cover
76%
12th clearest
Wind
8 mph
1st windiest
Solar energy
0.86 kWh/m²
Travel score
0.8
out of 10

Bothell West is census-designated place in Snohomish County, Washington (state), USA.

Density
1,542/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 45°F through the month.

A typical December day in Bothell West reaches about 45°F in the afternoon and slips back to 38°F overnight — a 6°F spread between the day's warmth and the night's chill. On most days the high lands between 39°F and 50°F. Set against its neighbours, December runs about 5°F cooler than November and on par with January.

20°30°40°50°60°151015202531
Avg high (°F)Avg low (°F)
14639
24639
34639
44639
54639
64639
74539
84539
94539
104539
114538
124538
134538
144538
154538
164538
174538
184538
194538
204538
214538
224438
234438
244438
254438
264438
274438
284438
294438
304438
314438

Bothell West weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 39°7.118.32.18.60.9
Feb48° / 39°4.714.91.89.91.5
Mar51° / 41°5.517.80.811.62.1
Apr56° / 44°4.415.40.113.43.2
May62° / 48°3.112.5014.94.9
Jun66° / 52°2.810.7015.75.9
Jul71° / 56°1.36015.47.6
Aug72° / 56°1.55.2014.17.7
Sep66° / 53°2.88.7012.46.5
Oct58° / 47°5.614.6010.63.8
Nov50° / 42°7.818.10.69.11.7
Dec45° / 38°7.117.92.18.30.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42872
52773
62674
72674
82476
92377
102278
112278
122179
132080
142080
151981
161981
171981
182080
192080
202080
212080
222179
232080
242179
252278
262278
272377
282377
292476
302476
312476

Chance of precipitation in December

Any precipitationSnow

Bothell West gets around 7.1 in of rain and snow over 17.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 59% and peaks near 62% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1575
2565
3565
4565
5565
6575
7575
8575
9585
10585
11595
12606
13616
14616
15626
16627
17627
18627
19618
20618
21618
22608
23609
24599
25599
26599
27599
28599
29599
30599
31599

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 8 mph in December, the windiest month of the year.

Across December, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 30 min at the start of December to 8 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 7:44 AM to 8:05 AM, and sunset from 4:13 PM to 4:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.57:444:13
28.57:454:13
38.47:464:12
48.47:484:12
58.47:494:12
68.47:504:12
78.37:514:11
88.37:524:11
98.37:534:11
108.37:544:11
118.37:554:11
128.37:564:11
138.27:564:11
148.27:574:11
158.27:584:11
168.27:594:12
178.27:594:12
188.28:004:12
198.28:014:12
208.28:014:13
218.28:024:13
228.28:024:14
238.28:034:14
248.28:034:15
258.28:034:15
268.28:044:16
278.28:044:17
288.28:044:17
298.28:044:18
308.28:054:19
318.28:054:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.86 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.86 kWh/m² to a high of 6.07 kWh/m² in July across the year — December's 0.86 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.9Dim
20.9Dim
30.9Dim
40.9Dim
50.9Dim
60.9Dim
70.9Dim
80.9Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.8Dim
170.8Dim
180.8Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.8Dim
250.8Dim
260.8Dim
270.9Dim
280.9Dim
290.9Dim
300.9Dim
310.9Dim
Planning a trip in December

Hazard calendar for Bothell West

In seasonPeak

In December, Bothell West sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Bothell West's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Bothell West?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Bothell West.

What to pack for Bothell West in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Bothell West sees daytime highs around 45°F and nights near 38°F. Pack a warm layer and rain gear. Worth having: a heavy coat. About 18 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Bothell West in December

The nearest coast averages about 47°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 37 mi away) is warmest in August at about 53°F and coldest in February near 46°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

45°50°55°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan46Bracing
Feb46Bracing
Mar47Bracing
Apr48Bracing
May50Bracing
Jun52Bracing
Jul53Bracing
Aug53Bracing
Sep53Bracing
Oct50Bracing
Nov49Bracing
Dec47Bracing

UV index in Bothell West in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bothell West peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Bothell West in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Bothell West is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodModerateGoodAug 2119 µg/m³Dec 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Moderate
Apr12Good
May13Moderate
Jun11Good
Jul10Good
Aug20Moderate
Sep18Moderate
Oct11Good
Nov7Good
Dec6Good
Location & terrain

Where is Bothell West?

Bothell West sits at 47.8°N, 122.2°W, 466 ft above sea level, in United States. The nearest listed city is North Creek, 3.1 mi away.

Topography around Bothell West

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Bothell West.

Within 2 miles, the terrain around Bothell West has only modest variations in elevation — a maximum elevation change of 430 ft around an average of 312 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 771 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.

The land around Bothell West is covered by trees (70%) and artificial surfaces (26%) within 2 miles, trees (53%) and water (20%) within 10 miles, and trees (70%) within 50 miles.

2 miles
430 ft
10 miles
771 ft
50 miles
7,589 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: North Creek 3.1 mi · Martha Lake 3.1 mi · Mill Creek East 3.1 mi · Kenmore 3.1 mi · Mountlake Terrace 3.1 mi · Bothell 3.1 mi · Lynnwood 3.7 mi · Mill Creek 4.3 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bothell West (47.8053°, -122.2406°, elevation 466 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).