Longview weather in December

In December, Longview sees average daytime highs of 45°F and overnight lows near 35°F, with 8.0 in of precipitation across 18.1 wet days and about 8.5 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 10% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 42 min at the start of December to 8 h 30 min by month's end. Set against the rest of the year, December is Longview's 12th-clearest and 1st-windiest month. For the whole year in context, see Longview's year-round climate.

Daytime high
45°
12th warmest
Overnight low
35°
1st coldest
Precipitation
8.0 in
18.1 wet days
Daylight
8 h 24 min
7:54 AM – 4:21 PM
Cloud cover
80%
12th clearest
Wind
6 mph
1st windiest
Solar energy
0.95 kWh/m²
Travel score
0.7
out of 10

Longview is city in Cowlitz County, Washington, United States.

Density
963/km²
people per km²
Founded
1850

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 Longview reaches about 45°F in the afternoon and slips back to 35°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 38°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)
14635
24635
34635
44535
54535
64535
74535
84535
94535
104535
114535
124535
134535
144535
154535
164535
174535
184435
194435
204435
214435
224435
234435
244435
254435
264435
274435
284435
294435
304435
314435

How December really feels in Longview

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Longview 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° / 36°7.418.12.68.81.0
Feb49° / 36°5.514.92.1101.7
Mar53° / 38°6.518.21.411.62.4
Apr58° / 41°5.116.40.113.33.5
May64° / 46°3.311.4014.75.5
Jun69° / 50°2.08.5015.56.5
Jul76° / 53°0.63015.28.2
Aug77° / 54°0.83.90148.1
Sep71° / 50°2.26.7012.37.2
Oct60° / 44°5.013010.74.5
Nov50° / 38°8.218.20.89.21.8
Dec45° / 35°8.018.12.78.50.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22179
32179
42080
52080
62080
71981
81981
91882
101684
111684
121684
131684
141585
151585
161585
171585
181585
191585
201585
211783
221783
231783
241783
251882
261981
271981
281981
291981
301981
311981

Chance of precipitation in December

Any precipitationSnow

Longview gets around 8.0 in of rain and snow over 18.1 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 61% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1607
2597
3597
4597
5597
6597
7597
8596
9596
10606
11606
12607
13617
14617
15617
16618
17618
18609
19609
205910
215910
225910
235810
245810
255811
265811
275811
285910
295910
305910
316010

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 6 mph in December, the windiest month of the year.

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

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 42 min at the start of December to 8 h 30 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 7:41 AM to 8:01 AM, and sunset from 4:22 PM to 4:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.77:414:22
28.77:424:22
38.77:434:22
48.67:444:21
58.67:454:21
68.67:464:21
78.67:474:21
88.57:484:21
98.57:494:21
108.57:504:21
118.57:514:21
128.57:514:21
138.57:524:21
148.57:534:21
158.57:544:21
168.47:544:21
178.47:554:22
188.47:564:22
198.47:564:22
208.47:574:23
218.47:584:23
228.47:584:23
238.47:584:24
248.47:594:24
258.47:594:25
268.48:004:26
278.48:004:26
288.48:004:27
298.58:004:28
308.58:004:28
318.58:014:29

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.95 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.95 kWh/m² to a high of 6.37 kWh/m² in July across the year — December's 0.95 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.0Dim
21.0Dim
31.0Dim
41.0Dim
51.0Dim
61.0Dim
71.0Dim
80.9Dim
90.9Dim
100.9Dim
110.9Dim
120.9Dim
130.9Dim
140.9Dim
150.9Dim
160.9Dim
170.9Dim
180.9Dim
190.9Dim
200.9Dim
210.9Dim
220.9Dim
230.9Dim
240.9Dim
250.9Dim
260.9Dim
270.9Dim
281.0Dim
291.0Dim
301.0Dim
311.0Dim
Planning a trip in December

Hazard calendar for Longview

In seasonPeak

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

Longview'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 Longview?

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

0.7
Sightseeing
12th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Longview.

What to pack for Longview in December

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

In December, Longview sees daytime highs around 45°F and nights near 35°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 Longview 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 Longview peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highVery highHighModerateLowJul 17UV 8Dec 15UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May8Very high
Jun6High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Longview 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 Longview is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1519 µg/m³Dec 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr11Good
May10Good
Jun10Good
Jul9Good
Aug15Moderate
Sep20Moderate
Oct13Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Longview?

Longview sits at 46.1°N, 122.9°W, 20 ft above sea level, in United States. The nearest listed city is Battle Ground, 32 mi away.

Topography around Longview

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

Within 2 miles, the terrain around Longview has only modest variations in elevation — a maximum elevation change of 486 ft around an average of 52 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,946 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,212 ft.

The land around Longview is covered by trees (40%) and artificial surfaces (34%) within 2 miles, trees (77%) within 10 miles, and trees (83%) within 50 miles.

2 miles
486 ft
10 miles
1,946 ft
50 miles
8,212 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Battle Ground 32 mi · Salmon Creek 33 mi · Hazel Dell 35 mi · Five Corners 36 mi · Vancouver 37 mi · Orchards 37 mi · Centralia 40 mi · Bethany 40 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 Longview (46.1382°, -122.9382°, elevation 20 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).