East Peoria weather in December

In December, East Peoria sees average daytime highs of 38°F and overnight lows near 24°F, with 2.2 in of precipitation across 7.7 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 41°F in the first days to 35°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 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 East Peoria's 11th-clearest and 6th-windiest month. For the whole year in context, see East Peoria's year-round climate.

Daytime high
38°
10th warmest
Overnight low
24°
3rd coldest
Precipitation
2.2 in
7.7 wet days
Daylight
9 h 06 min
7:21 AM – 4:28 PM
Cloud cover
67%
11th clearest
Wind
9 mph
6th windiest
Solar energy
1.75 kWh/m²
Travel score
0.0
out of 10

East Peoria is city on the Illinois River in Tazewell County, Illinois, USA.

Density
402/km²
people per km²
Founded
1884

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 41°F in the first days to 35°F by the end.

A typical December day in East Peoria reaches about 38°F in the afternoon and slips back to 24°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 23°F and 52°F. Set against its neighbours, December runs about 12°F cooler than November and about 5°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14228
24228
34127
44127
54027
64026
74026
83926
93925
103925
113825
123824
133824
143824
153724
163724
173724
183723
193723
203623
213623
223623
233622
243622
253522
263522
273522
283522
293521
303521
313521

How December really feels in East Peoria

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
15 feel bitter (≤ 14°F)

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

East Peoria 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
Jan33° / 19°2.1859.40.0
Feb37° / 22°2.17.14.110.40.0
Mar49° / 32°2.910.21.911.72.1
Apr62° / 43°4.411.80.613.14.9
May72° / 53°4.613014.26.1
Jun81° / 63°4.411.6014.96.1
Jul84° / 67°3.810.2014.65.7
Aug82° / 64°3.19.4013.66.5
Sep76° / 56°3.07.9012.37.2
Oct64° / 45°3.18.60.110.95.8
Nov49° / 34°2.88.219.72.2
Dec38° / 24°2.27.73.59.10.0

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 12% of December, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
44060
54060
64060
74060
84060
93961
103961
114060
124060
133961
143862
153862
163862
173862
183763
193763
203763
213565
223466
233466
243466
253466
263367
273367
283466
293466
303367
313367

Chance of precipitation in December

Any precipitationSnow

East Peoria gets around 2.2 in of rain and snow over 7.7 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 25% and peaks near 28% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1289
2289
32710
42710
52710
62610
72611
82611
92511
102511
112511
122510
132510
142510
152510
162510
172510
182511
192511
202511
212511
222511
232411
242411
252411
262411
272411
282412
292312
302312
312312

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
12991
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 9 mph in December.

Across December, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

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 7:09 AM to 7:28 AM, and sunset from 4:27 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:094:27
29.37:104:27
39.37:114:27
49.27:124:27
59.27:134:27
69.27:144:26
79.27:154:26
89.27:154:26
99.27:164:26
109.27:174:26
119.17:184:27
129.17:194:27
139.17:194:27
149.17:204:27
159.17:214:27
169.17:214:28
179.17:224:28
189.17:234:28
199.17:234:29
209.17:244:29
219.17:244:29
229.17:254:30
239.17:254:30
249.17:264:31
259.17:264:31
269.17:264:32
279.17:274:33
289.17:274:33
299.17:274:34
309.17:284:35
319.17:284:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.75 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.75 kWh/m² to a high of 6.38 kWh/m² in June across the year — December's 1.75 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
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.8Dim
281.8Dim
291.8Dim
301.8Dim
311.8Dim
Planning a trip in December

Is December a good time to visit East Peoria?

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

0.0
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 East Peoria.

What to pack for East Peoria in December

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

In December, East Peoria sees daytime highs around 38°F and nights near 24°F. Pack a warm layer and a heavy coat. About 8 days see rain.

a warm layera heavy coat

UV index in East Peoria 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 East Peoria peaks around June 19 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 19UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in East Peoria 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 East Peoria is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1816 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr11Good
May14Moderate
Jun14Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is East Peoria?

East Peoria sits at 40.7°N, 89.6°W, 459 ft above sea level, in United States. The nearest listed city is Peoria, 1.9 mi away.

Topography around East Peoria

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

Within 2 miles, the terrain around East Peoria has only modest variations in elevation — a maximum elevation change of 354 ft around an average of 541 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 456 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 535 ft.

The land around East Peoria is covered by trees (44%) and artificial surfaces (27%) within 2 miles, trees (41%) and cropland (29%) within 10 miles, and cropland (75%) within 50 miles.

2 miles
354 ft
10 miles
456 ft
50 miles
535 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Peoria 1.9 mi · North Peoria 3.7 mi · Morton 7.5 mi · Pekin 7.5 mi · Washington 9.3 mi · Normal 33 mi · Bloomington 34 mi · Galesburg 46 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 East Peoria (40.6662°, -89.5801°, elevation 459 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).