Hagerstown weather in December

In December, Hagerstown sees average daytime highs of 43°F and overnight lows near 29°F, with 3.3 in of precipitation across 8.4 wet days and about 9.2 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 47°F in the first days to 41°F by the end. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 24 min at the start of December to 9 h 12 min by month's end. Set against the rest of the year, December is Hagerstown's 11th-clearest and 5th-windiest month. For the whole year in context, see Hagerstown's year-round climate.

Daytime high
43°
10th warmest
Overnight low
29°
3rd coldest
Precipitation
3.3 in
8.4 wet days
Daylight
9 h 12 min
7:31 AM – 4:43 PM
Cloud cover
64%
11th clearest
Wind
7 mph
5th windiest
Solar energy
1.8 kWh/m²
Travel score
0.6
out of 10

Hagerstown is city in Maryland, United States.

Density
1,323/km²
people per km²
Founded
1762

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 47°F in the first days to 41°F by the end.

A typical December day in Hagerstown reaches about 43°F in the afternoon and slips back to 29°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 31°F and 56°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)
14733
24733
34732
44632
54632
64532
74531
84531
94431
104431
114430
124330
134330
144330
154329
164329
174229
184229
194229
204229
214228
224228
234228
244228
254228
264128
274128
284128
294127
304127
314127

How December really feels in Hagerstown

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.

Hagerstown weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 25°3.18.83.79.50.0
Feb42° / 26°2.78.23.710.40.4
Mar52° / 34°3.710.32.711.72.6
Apr64° / 44°3.510.30.2135.5
May73° / 54°3.611.7014.26.4
Jun81° / 63°3.310.3014.76.1
Jul86° / 67°3.210.2014.55.1
Aug84° / 66°2.68.7013.65.7
Sep77° / 59°3.98.8012.37.0
Oct65° / 47°3.37.80.110.96.2
Nov53° / 37°3.07.80.59.83.2
Dec43° / 29°3.38.42.39.20.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24060
34060
43961
53961
63862
73763
83763
93763
103664
113664
123664
133763
143763
153763
163862
173862
183862
193961
203961
214060
224060
234060
244159
254159
264060
274159
284159
294159
304060
314060

Chance of precipitation in December

Any precipitationSnow

Hagerstown gets around 3.3 in of rain and snow over 8.4 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 28% and peaks near 29% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1295
2295
3296
4296
5297
6297
7297
8298
9298
10299
11299
12299
13299
14299
15299
16299
17299
18298
19288
20288
21278
22278
23267
24267
25267
26267
27267
28267
29267
30278
31278

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2982
3982
4982
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
241000
251000
261000
271000
281000
291000
301000
311000

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
96calm
106calm
116calm
126calm
136calm
146calm
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 9 h 24 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 12 minutes over December. Sunrise moves from 7:19 AM to 7:37 AM, and sunset from 4:43 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.47:194:43
29.47:204:43
39.47:204:42
49.37:214:42
59.37:224:42
69.37:234:42
79.37:244:42
89.37:254:42
99.37:264:42
109.37:264:42
119.37:274:42
129.27:284:42
139.27:294:43
149.27:294:43
159.27:304:43
169.27:314:43
179.27:314:44
189.27:324:44
199.27:334:44
209.27:334:45
219.27:344:45
229.27:344:46
239.27:354:46
249.27:354:47
259.27:354:47
269.27:364:48
279.27:364:48
289.27:364:49
299.27:374:50
309.27:374:50
319.27:374:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.8 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 6.14 kWh/m² in June across the year — December's 1.8 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.8Dim
181.8Dim
191.8Dim
201.8Dim
211.8Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.8Dim
281.8Dim
291.8Dim
301.9Dim
311.9Dim
Planning a trip in December

Is December a good time to visit Hagerstown?

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

0.6
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 Hagerstown.

What to pack for Hagerstown in December

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

In December, Hagerstown sees daytime highs around 43°F and nights near 29°F. Pack a warm layer. Worth having: a heavy coat and rain gear. About 8 days see rain.

a warm layera heavy coatrain gear

UV index in Hagerstown 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 Hagerstown peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 10UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Hagerstown 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 Hagerstown is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1316 µg/m³Nov 137 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar12Good
Apr12Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov7Good
Dec8Good
Location & terrain

Where is Hagerstown?

Hagerstown sits at 39.6°N, 77.7°W, 538 ft above sea level, in United States. The nearest listed city is Martinsburg, 18 mi away.

Topography around Hagerstown

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

Within 2 miles, the terrain around Hagerstown has only modest variations in elevation — a maximum elevation change of 213 ft around an average of 568 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,663 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,825 ft.

The land around Hagerstown is covered by trees (39%) and artificial surfaces (38%) within 2 miles, trees (40%), cropland (29%) and grassland (24%) within 10 miles, and trees (63%) and grassland (20%) within 50 miles.

2 miles
213 ft
10 miles
1,663 ft
50 miles
2,825 ft
treesgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Martinsburg 18 mi · Chambersburg 21 mi · Frederick 23 mi · Ballenger Creek 24 mi · Damascus 37 mi · Leesburg 37 mi · Westminster 39 mi · Winchester 39 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 Hagerstown (39.6418°, -77.72°, elevation 538 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).