Pullman weather in December

In December, Pullman sees average daytime highs of 37°F and overnight lows near 27°F, with 3.2 in of precipitation across 13.6 wet days and about 8.4 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 38°F in the first days to 36°F by the end. The sky is clear or mostly clear about 19% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 36 min at the start of December to 8 h 24 min by month's end. Set against the rest of the year, December is Pullman's 11th-clearest and 5th-windiest month. For the whole year in context, see Pullman's year-round climate.

Daytime high
37°
12th warmest
Overnight low
27°
1st coldest
Precipitation
3.2 in
13.6 wet days
Daylight
8 h 24 min
7:34 AM – 3:56 PM
Cloud cover
70%
11th clearest
Wind
7 mph
5th windiest
Solar energy
1.25 kWh/m²
Travel score
0.0
out of 10

Pullman is city in Whitman County, Washington State, USA.

Density
1,187/km²
people per km²
Founded
1875

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 38°F in the first days to 36°F by the end.

A typical December day in Pullman reaches about 37°F in the afternoon and slips back to 27°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 28°F and 45°F. Set against its neighbours, December runs about 8°F cooler than November and on par with January.

10°20°30°40°50°151015202531
Avg high (°F)Avg low (°F)
13928
23828
33828
43828
53828
63828
73728
83727
93727
103727
113727
123727
133727
143727
153727
163727
173627
183627
193627
203626
213626
223626
233626
243626
253626
263626
273626
283626
293526
303526
313626

How December really feels in Pullman

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.

Pullman weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 27°3.013.17.48.80.0
Feb42° / 29°2.210.85.3100.3
Mar50° / 34°2.612.43.211.62.1
Apr57° / 39°2.010.20.813.34.1
May66° / 46°1.98.9014.86.2
Jun73° / 52°1.25.7015.67.5
Jul84° / 58°0.42.4015.37.1
Aug83° / 58°0.52.10147.3
Sep74° / 51°0.83.7012.48.1
Oct59° / 41°2.08.50.210.65.0
Nov45° / 33°3.112.53.89.21.0
Dec37° / 27°3.213.68.68.40.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33565
43466
53466
63367
73367
83268
93268
103070
113070
123070
132872
142872
152872
162872
172872
182872
193070
203070
213070
223169
233169
243268
253268
263268
273268
283268
293268
303268
313268

Chance of precipitation in December

Any precipitationSnow

Pullman gets around 3.2 in of rain and snow over 13.6 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 44% and peaks near 45% on the wettest days, and about 9 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14322
24323
34324
44324
54325
64425
74426
84426
94426
104427
114427
124427
134527
144528
154528
164528
174529
184429
194429
204429
214429
224329
234329
244329
254329
264429
274429
284429
294429
304529
314529

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 7 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
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 36 min at the start of December to 8 h 24 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 7:20 AM to 7:40 AM, and sunset from 3:57 PM to 4:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.67:203:57
28.67:213:57
38.67:223:56
48.67:233:56
58.57:243:56
68.57:253:56
78.57:263:56
88.57:273:55
98.57:283:55
108.47:293:55
118.47:303:55
128.47:313:55
138.47:323:55
148.47:323:56
158.47:333:56
168.47:343:56
178.47:353:56
188.47:353:56
198.37:363:57
208.37:363:57
218.37:373:58
228.37:373:58
238.37:383:58
248.37:383:59
258.37:394:00
268.47:394:00
278.47:394:01
288.47:394:02
298.47:404:02
308.47:404:03
318.47:404:04

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.25 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.25 kWh/m² to a high of 7.73 kWh/m² in July across the year — December's 1.25 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.3Dim
21.3Dim
31.3Dim
41.3Dim
51.3Dim
61.3Dim
71.3Dim
81.3Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.2Dim
181.2Dim
191.2Dim
201.2Dim
211.2Dim
221.2Dim
231.2Dim
241.2Dim
251.3Dim
261.3Dim
271.3Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Pullman?

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

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Pullman.

What to pack for Pullman in December

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

In December, Pullman sees daytime highs around 37°F and nights near 27°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 14 days see rain.

a warm layera heavy coatrain gear

UV index in Pullman 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 Pullman peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 8Dec 16UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul9Very high
Aug6High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Pullman 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 Pullman is worst in August — around 27 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodAug 1627 µg/m³Dec 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar14Moderate
Apr15Moderate
May11Good
Jun10Good
Jul25Moderate
Aug27Moderate
Sep25Moderate
Oct18Moderate
Nov17Moderate
Dec8Good
Location & terrain

Where is Pullman?

Pullman sits at 46.7°N, 117.2°W, 2,352 ft above sea level, in United States. The nearest listed city is Moscow, 8.7 mi away.

Topography around Pullman

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

Within 2 miles, the terrain around Pullman has only modest variations in elevation — a maximum elevation change of 423 ft around an average of 2,520 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,215 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,827 ft.

The land around Pullman is covered by cropland (32%), grassland (24%) and artificial surfaces (24%) within 2 miles, cropland (82%) within 10 miles, and cropland (37%), grassland (36%) and trees (25%) within 50 miles.

2 miles
423 ft
10 miles
2,215 ft
50 miles
5,827 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Moscow 8.7 mi · Lewiston 23 mi · Lewiston Orchards 26 mi · Opportunity 63 mi · Spokane Valley 65 mi · Spokane 65 mi · Coeur d'Alene 68 mi · Post Falls 69 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 Pullman (46.7313°, -117.1796°, elevation 2,352 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).