Murrysville weather in December

In December, Murrysville sees average daytime highs of 41°F and overnight lows near 28°F, with 3.6 in of precipitation across 12.3 wet days and about 9.2 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 44°F in the first days to 39°F by the end. 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 9 h 18 min at the start of December to 9 h 12 min by month's end. Set against the rest of the year, December is Murrysville's 11th-clearest and 4th-windiest month. For the whole year in context, see Murrysville's year-round climate.

Daytime high
41°
10th warmest
Overnight low
28°
3rd coldest
Precipitation
3.6 in
12.3 wet days
Daylight
9 h 06 min
7:41 AM – 4:49 PM
Cloud cover
77%
11th clearest
Wind
7 mph
4th windiest
Solar energy
1.49 kWh/m²
Travel score
0.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 44°F in the first days to 39°F by the end.

A typical December day in Murrysville reaches about 41°F in the afternoon and slips back to 28°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 27°F and 55°F. Set against its neighbours, December runs about 10°F cooler than November and about 4°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14532
24431
34431
44431
54330
64330
74230
84229
94229
104129
114129
124128
134128
144028
154028
164028
174027
184027
194027
204027
213927
223927
233926
243926
253926
263926
273926
283926
293926
303826
313825

How December really feels in Murrysville

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.

Murrysville weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.712.87.69.40.0
Feb40° / 24°3.111.36.310.40.1
Mar49° / 32°4.313.13.711.71.8
Apr61° / 42°4.613.91.1134.5
May70° / 51°4.814.5014.25.8
Jun78° / 60°4.913.7014.86.0
Jul82° / 64°4.513.9014.65.8
Aug81° / 62°3.611.8013.66.2
Sep74° / 55°3.910.4012.36.7
Oct62° / 44°3.7110.210.95.2
Nov50° / 35°3.510.41.69.82.3
Dec41° / 28°3.612.359.20.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

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 (%)
12476
22476
32377
42278
52278
62278
72278
82278
92278
102179
112179
122278
132278
142377
152377
162377
172476
182476
192476
202476
212575
222575
232575
242575
252575
262575
272575
282476
292476
302476
312377

Chance of precipitation in December

Any precipitationSnow

Murrysville gets around 3.6 in of rain and snow over 12.3 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 40% and peaks near 43% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14112
24213
34213
44214
54215
64315
74316
84316
94317
104217
114217
124217
134117
144117
154017
164017
173917
183917
193817
203817
213716
223716
233716
243716
253715
263715
273815
283816
293916
303916
314017

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 (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 7 mph in December.

Across December, daily wind ranges from about 7 mph on the calmest days to 8 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
277light breeze
287light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:29 AM to 7:47 AM, and sunset from 4:48 PM to 4:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:294:48
29.37:304:48
39.37:314:48
49.37:324:48
59.37:334:48
69.27:334:48
79.27:344:48
89.27:354:48
99.27:364:48
109.27:374:48
119.27:384:48
129.27:384:48
139.27:394:48
149.17:404:48
159.17:404:49
169.17:414:49
179.17:424:49
189.17:424:49
199.17:434:50
209.17:434:50
219.17:444:51
229.17:444:51
239.17:454:52
249.17:454:52
259.17:464:53
269.17:464:53
279.17:464:54
289.17:474:54
299.17:474:55
309.17:474:56
319.27:474:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.49 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 5.92 kWh/m² in June across the year — December's 1.49 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.5Dim
61.5Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.5Dim
141.5Dim
151.5Dim
161.5Dim
171.5Dim
181.5Dim
191.5Dim
201.5Dim
211.5Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.5Dim
271.5Dim
281.5Dim
291.5Dim
301.5Dim
311.5Dim
Planning a trip in December

Is December a good time to visit Murrysville?

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

0.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Murrysville.

What to pack for Murrysville in December

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

In December, Murrysville sees daytime highs around 41°F and nights near 28°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Murrysville in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Murrysville peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Murrysville 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 Murrysville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 148 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr12Good
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Murrysville?

Murrysville sits at 40.4°N, 79.7°W, 906 ft above sea level, in United States. The nearest listed city is Monroeville, 5.0 mi away.

Topography around Murrysville

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

Within 2 miles, the terrain around Murrysville has only modest variations in elevation — a maximum elevation change of 545 ft around an average of 1,076 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 823 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,349 ft.

The land around Murrysville is covered by trees (81%) within 2 miles, trees (71%) within 10 miles, and trees (75%) within 50 miles.

2 miles
545 ft
10 miles
823 ft
50 miles
2,349 ft
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Monroeville 5.0 mi · Plum 5.6 mi · Penn Hills 8.7 mi · Wilkinsburg 9.9 mi · West Mifflin 9.9 mi · McKeesport 11 mi · Pittsburgh 16 mi · Baldwin 16 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 Murrysville (40.4284°, -79.6976°, elevation 906 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).