Pekin weather in October

In October, Pekin sees average daytime highs of 64°F and overnight lows near 45°F, with 3.1 in of precipitation across 8.6 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 71°F in the first days to 58°F by the end. The sky is clear or mostly clear about 39% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Pekin's 4th-clearest and 7th-windiest month. For the whole year in context, see Pekin's year-round climate.

Daytime high
64°
6th warmest
Overnight low
45°
7th coldest
Precipitation
3.1 in
8.6 wet days
Daylight
10 h 54 min
6:17 AM – 5:11 PM
Cloud cover
55%
4th clearest
Wind
8 mph
7th windiest
Solar energy
3.26 kWh/m²
Travel score
6.0
out of 10

Pekin is city and county seat of Tazewell County, Illinois, United States.

Density
832/km²
people per km²
Founded
1829

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 71°F in the first days to 58°F by the end.

A typical October day in Pekin reaches about 64°F in the afternoon and slips back to 45°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 78°F. Set against its neighbours, October runs about 13°F cooler than September and about 14°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
17151
27150
37150
47050
57049
66949
76949
86848
96848
106747
116747
126747
136646
146546
156546
166545
176445
186444
196344
206344
216244
226243
236143
246143
256042
266042
275942
285941
295841
305840
315740

How October really feels in Pekin

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 0 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
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Pekin weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 20°2.18.34.89.40.0
Feb39° / 23°2.17.13.910.40.1
Mar51° / 33°3.010.11.711.72.4
Apr63° / 43°4.511.40.5135.1
May73° / 54°4.613014.26.2
Jun82° / 64°4.611.7014.86.0
Jul84° / 67°3.710.2014.65.5
Aug83° / 65°3.18.9013.66.2
Sep77° / 57°3.17.5012.37.3
Oct64° / 45°3.18.60.110.96.0
Nov50° / 34°2.98.119.72.4
Dec39° / 25°2.37.53.19.20.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25644
35743
45644
55644
65545
75545
85545
95545
105446
115446
125446
135446
145446
155347
165347
175248
185248
195149
205050
214951
224852
234753
244654
254555
264654
274555
284456
294456
304357
314357

Chance of precipitation in October

Any precipitation

Pekin gets around 3.1 in of rain and snow over 8.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 29% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
124
224
324
424
524
625
725
826
926
1027
1127
1227
1327
1427
1528
1628
1728
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2928
3028
3128

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
17214104
2741394
3751393
4761293
5761293
6781183
7791182
8791182
9811072
10811072
1183962
1284961
1386851
1486851
1587841
1688741
1789740
1889740
1990730
2090730
2190730
2290730
2391720
2491720
2591720
2691720
2791720
2891720
2992710
3092710
3192710

Wind in October

Winds average 8 mph in October.

Across October, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light 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 October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:00 AM to 6:34 AM, and sunset from 5:35 PM to 4:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:005:35
211.56:015:33
311.56:025:31
411.46:035:30
511.46:055:28
611.36:065:26
711.36:075:25
811.36:085:23
911.26:095:22
1011.26:105:20
1111.16:115:18
1211.16:125:17
1311.06:135:15
1411.06:145:14
1510.96:155:12
1610.96:175:11
1710.96:185:09
1810.86:195:08
1910.86:205:06
2010.76:215:05
2110.76:225:03
2210.66:235:02
2310.66:255:01
2410.66:264:59
2510.56:274:58
2610.56:284:57
2710.46:294:55
2810.46:304:54
2910.46:324:53
3010.36:334:52
3110.36:344:50

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.26 kWh/m².

For context, solar energy here swings from a low near 1.77 kWh/m² to a high of 6.4 kWh/m² in June across the year — October's 3.26 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.7Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.5Moderate
123.5Moderate
133.4Moderate
143.4Moderate
153.3Moderate
163.3Moderate
173.2Moderate
183.2Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.0Moderate
233.0Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
312.6Moderate
Planning a trip in October

Is October a good time to visit Pekin?

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

6.0
Sightseeing
4th-best month of the year
2.2
Beach & pool
6th-best month of the year

October is a reasonable time to visit Pekin for sightseeing.

What to pack for Pekin in October

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

In October, Pekin sees daytime highs around 64°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Pekin in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pekin peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighModerateJun 20UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Pekin in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Pekin 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).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1916 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr11Good
May14Moderate
Jun13Moderate
Jul16Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Pekin?

Pekin sits at 40.6°N, 89.6°W, 502 ft above sea level, in United States. The nearest listed city is East Peoria, 7.5 mi away.

Topography around Pekin

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

Within 2 miles, the terrain around Pekin has only modest variations in elevation — a maximum elevation change of 243 ft around an average of 509 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 384 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 535 ft.

The land around Pekin is covered by trees (32%) and artificial surfaces (26%) within 2 miles, cropland (49%) and trees (30%) within 10 miles, and cropland (74%) within 50 miles.

2 miles
243 ft
10 miles
384 ft
50 miles
535 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: East Peoria 7.5 mi · Peoria 9.3 mi · Morton 9.9 mi · North Peoria 11 mi · Washington 16 mi · Normal 34 mi · Bloomington 34 mi · Galesburg 47 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 Pekin (40.5675°, -89.6407°, elevation 502 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).