Easton weather in December

In December, Easton sees average daytime highs of 41°F and overnight lows near 28°F, with 4.1 in of precipitation across 9.9 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 45°F in the first days to 39°F by the end. The sky is clear or mostly clear about 26% 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 06 min by month's end. Set against the rest of the year, December is Easton's 8th-clearest and 4th-windiest month. For the whole year in context, see Easton's year-round climate.

Daytime high
41°
10th warmest
Overnight low
28°
3rd coldest
Precipitation
4.1 in
9.9 wet days
Daylight
9 h 06 min
7:24 AM – 4:30 PM
Cloud cover
63%
8th clearest
Wind
7 mph
4th windiest
Solar energy
1.73 kWh/m²
Travel score
0.3
out of 10

Easton is city in and the county seat of Northampton County, Pennsylvania, United States of America.

Density
2,217/km²
people per km²
Founded
1752

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 45°F in the first days to 39°F by the end.

A typical December day in Easton 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 30°F and 54°F. Set against its neighbours, December runs about 10°F cooler than November and about 5°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14632
24631
34531
44531
54430
64430
74330
84329
94329
104229
114229
124228
134128
144128
154128
164128
174128
184027
194027
204027
214027
224027
234027
244026
254026
263926
273926
283926
293926
303926
313925

How December really feels in Easton

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.

Easton weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.69.65.29.40.0
Feb40° / 24°3.18.94.610.40.1
Mar48° / 31°4.110.93.811.71.8
Apr60° / 42°3.910.70.513.14.7
May70° / 51°3.711.4014.26.2
Jun79° / 60°4.111014.96.3
Jul84° / 65°3.610.2014.65.4
Aug82° / 64°3.79.8013.66.1
Sep75° / 56°4.38.8012.37.0
Oct63° / 45°4.18.70.210.95.7
Nov51° / 35°3.38.30.89.72.7
Dec41° / 28°4.19.93.49.10.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24060
34060
43961
54060
64060
73961
83862
93763
103763
113862
123961
133862
143862
153862
164060
174060
184159
194258
204357
214357
224456
234456
244555
254555
264555
274555
284555
294555
304555
314456

Chance of precipitation in December

Any precipitationSnow

Easton gets around 4.1 in of rain and snow over 9.9 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 32% and peaks near 34% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1328
2328
3329
43210
53310
63311
73311
83412
93412
103413
113413
123413
133313
143312
153312
163312
173211
183211
193111
203110
213010
223010
233010
242910
252910
262910
272910
282911
293011
303012
313013

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 (%)
1991
2991
3991
4991
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
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 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 9 h 18 min at the start of December to 9 h 06 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 7:12 AM to 7:30 AM, and sunset from 4:30 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:124:30
29.37:134:29
39.37:144:29
49.27:144:29
59.27:154:29
69.27:164:29
79.27:174:29
89.27:184:29
99.27:194:29
109.27:204:29
119.17:204:29
129.17:214:29
139.17:224:29
149.17:234:30
159.17:234:30
169.17:244:30
179.17:254:30
189.17:254:31
199.17:264:31
209.17:264:31
219.17:274:32
229.17:274:32
239.17:284:33
249.17:284:33
259.17:294:34
269.17:294:34
279.17:294:35
289.17:304:36
299.17:304:36
309.17:304:37
319.17:304:38

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.73 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.99 kWh/m² in June across the year — December's 1.73 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.8Dim
271.8Dim
281.8Dim
291.8Dim
301.8Dim
311.8Dim
Planning a trip in December

Is December a good time to visit Easton?

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

0.3
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 Easton.

What to pack for Easton in December

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

In December, Easton sees daytime highs around 41°F and nights near 28°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Easton 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 Easton peaks around July 10 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 10UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Easton 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 Easton is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1518 µg/m³Nov 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Easton?

Easton sits at 40.7°N, 75.2°W, 318 ft above sea level, in United States. The nearest listed city is Bethlehem, 8.7 mi away.

Topography around Easton

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

Within 2 miles, the terrain around Easton has only modest variations in elevation — a maximum elevation change of 669 ft around an average of 348 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,191 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,516 ft.

The land around Easton is covered by trees (48%) and artificial surfaces (32%) within 2 miles, trees (50%), cropland (21%) and grassland (20%) within 10 miles, and trees (75%) within 50 miles.

2 miles
669 ft
10 miles
1,191 ft
50 miles
2,516 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Bethlehem 8.7 mi · Whitehall Township 15 mi · Allentown 15 mi · Bridgewater 30 mi · Lansdale 31 mi · Hopatcong Hills 34 mi · Hillsborough 34 mi · Basking Ridge 35 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 Easton (40.6884°, -75.2207°, elevation 318 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).