Columbia City weather in December

In December, Columbia City sees average daytime highs of 45°F and overnight lows near 38°F, with 7.0 in of precipitation across 17.6 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 18 min by month's end. Set against the rest of the year, December is Columbia City's 12th-clearest and 2nd-windiest month. For the whole year in context, see Columbia City's year-round climate.

Daytime high
45°
12th warmest
Overnight low
38°
1st coldest
Precipitation
7.0 in
17.6 wet days
Daylight
8 h 18 min
7:58 AM – 4:13 PM
Cloud cover
77%
12th clearest
Wind
7 mph
2nd windiest
Solar energy
0.88 kWh/m²
Travel score
0.8
out of 10

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 Columbia City reaches about 45°F in the afternoon and slips back to 38°F overnight — a 7°F spread between the day's warmth and the night's chill. On most days the high lands between 39°F and 51°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)
14739
24639
34638
44638
54638
64638
74638
84638
94638
104638
114538
124538
134538
144538
154538
164538
174538
184538
194538
204538
214538
224538
234538
244538
254538
264538
274538
284538
294538
304538
314538

Columbia City 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° / 38°6.918.42.28.71.0
Feb49° / 39°4.714.51.89.91.6
Mar52° / 40°5.517.50.811.62.3
Apr57° / 44°4.514.90.113.33.5
May64° / 49°3.012014.95.3
Jun68° / 53°2.39.5015.76.3
Jul74° / 57°1.05015.47.9
Aug75° / 58°1.34.8014.18.0
Sep69° / 53°2.68.4012.46.8
Oct59° / 47°5.314.1010.64.2
Nov50° / 42°7.6180.69.11.9
Dec45° / 38°7.017.62.18.30.8

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 9% of December, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32575
42575
52575
62575
72476
82377
92179
102179
111981
121981
131981
141882
151882
161882
171882
181783
191783
201783
211981
221981
231981
242080
252080
262179
272278
282377
292377
302377
312476

Chance of precipitation in December

Any precipitationSnow

Columbia City gets around 7.0 in of rain and snow over 17.6 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 58% and peaks near 60% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1575
2575
3575
4575
5575
6575
7575
8575
9585
10585
11595
12595
13606
14606
15606
16607
17607
18607
19607
20598
21598
22588
23588
24579
25579
26579
27579
28579
29589
30589
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 7 mph in December.

Across December, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 30 min at the start of December to 8 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:43 AM to 8:04 AM, and sunset from 4:14 PM to 4:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.57:434:14
28.57:454:14
38.57:464:14
48.47:474:13
58.47:484:13
68.47:494:13
78.47:504:13
88.47:514:12
98.37:524:12
108.37:534:12
118.37:544:12
128.37:554:12
138.37:554:12
148.37:564:12
158.37:574:13
168.37:584:13
178.27:584:13
188.27:594:13
198.28:004:14
208.28:004:14
218.28:014:14
228.28:014:15
238.28:024:15
248.28:024:16
258.28:034:16
268.28:034:17
278.28:034:18
288.38:034:18
298.38:044:19
308.38:044:20
318.38:044:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.88 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.88 kWh/m² to a high of 6.14 kWh/m² in July across the year — December's 0.88 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.0Dim
20.9Dim
30.9Dim
40.9Dim
50.9Dim
60.9Dim
70.9Dim
80.9Dim
90.9Dim
100.9Dim
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
240.9Dim
250.9Dim
260.9Dim
270.9Dim
280.9Dim
290.9Dim
300.9Dim
310.9Dim
Planning a trip in December

Hazard calendar for Columbia City

In seasonPeak

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

Columbia City'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 Columbia City?

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 Columbia City.

What to pack for Columbia City in December

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

In December, Columbia City 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

UV index in Columbia City 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 Columbia City 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 Columbia City 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 Columbia City is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodSep 1322 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar12Moderate
Apr12Good
May11Good
Jun10Good
Jul10Good
Aug18Moderate
Sep22Moderate
Oct12Good
Nov8Good
Dec7Good
Location & terrain

Where is Columbia City?

Columbia City sits at 47.6°N, 122.3°W, 56 ft above sea level, in United States. The nearest listed city is Mercer Island, 2.5 mi away.

Topography around Columbia City

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

Within 2 miles, the terrain around Columbia City has only modest variations in elevation — a maximum elevation change of 374 ft around an average of 115 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,696 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.

The land around Columbia City is covered by water (37%), trees (31%) and artificial surfaces (28%) within 2 miles, trees (39%), water (31%) and artificial surfaces (26%) within 10 miles, and trees (74%) within 50 miles.

2 miles
374 ft
10 miles
1,696 ft
50 miles
7,589 ft
treesgrasslandartificial surfacesbare terrainwater
December weather nearby: Mercer Island 2.5 mi · Seattle 3.7 mi · Bellevue 5.0 mi · Bryn Mawr-Skyway 5.0 mi · Renton 6.2 mi · Tukwila 6.2 mi · Burien 7.5 mi · SeaTac 8.1 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 Columbia City (47.564°, -122.2754°, elevation 56 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. 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).