Westchester weather in October

In October, Westchester sees average daytime highs of 62°F and overnight lows near 44°F, with 3.1 in of precipitation across 9.1 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 68°F in the first days to 56°F by the end. The sky is clear or mostly clear about 34% 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 12 min by month's end. Set against the rest of the year, October is Westchester's 4th-clearest and 7th-windiest month. For the whole year in context, see Westchester's year-round climate.

Daytime high
62°
6th warmest
Overnight low
44°
7th coldest
Precipitation
3.1 in
9.1 wet days
Daylight
10 h 54 min
6:11 AM – 5:02 PM
Cloud cover
58%
4th clearest
Wind
8 mph
7th windiest
Solar energy
3.12 kWh/m²
Travel score
5.3
out of 10

Westchester is village in Cook County, Illinois, United States.

Density
1,752/km²
people per km²
Founded
1926

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 68°F in the first days to 56°F by the end.

A typical October day in Westchester reaches about 62°F in the afternoon and slips back to 44°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 50°F and 75°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)
16849
26849
36849
46748
56748
66748
76647
86647
96546
106546
116446
126445
136345
146345
156244
166244
176144
186143
196043
206043
215942
225942
235842
245842
255741
265741
275640
285640
295640
305539
315539

How October really feels in Westchester

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.

Westchester weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan31° / 18°2.18.35.99.30.0
Feb35° / 21°2.07.14.610.30.0
Mar47° / 30°2.710.12.911.71.4
Apr59° / 40°4.412.2113.14.2
May69° / 51°4.412.7014.35.9
Jun79° / 61°4.212.20156.2
Jul83° / 66°3.711.4014.75.8
Aug81° / 64°3.710.9013.76.5
Sep74° / 56°2.98.3012.37.1
Oct62° / 44°3.19.10.110.95.3
Nov48° / 33°2.58.31.39.61.7
Dec36° / 24°2.284.290.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35347
45347
55347
65347
75347
85248
95248
105248
115248
125248
135248
145248
155149
165149
174951
184852
194753
204654
214654
224456
234456
244357
254258
264258
274159
284060
294060
303961
313961

Chance of precipitation in October

Any precipitation

Westchester gets around 3.1 in of rain and snow over 9.1 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 29% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1127
1228
1328
1428
1528
1629
1730
1830
1930
2031
2131
2231
2330
2430
2530
2630
2730
2830
2929
3029
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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1761473
2761473
3771373
4791362
5801262
6811252
7811252
8821152
9831142
10851041
1186941
1287931
1388831
1488831
1590820
1691720
1791720
1891720
1992620
2092620
2192620
2292620
2393520
2493520
2594510
2694510
2795410
2895410
2995410
3095410
3195410

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
188light 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 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 5:54 AM to 6:29 AM, and sunset from 5:27 PM to 4:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:545:27
211.55:555:25
311.55:565:24
411.45:575:22
511.45:585:20
611.35:595:18
711.36:015:17
811.26:025:15
911.26:035:13
1011.16:045:12
1111.16:055:10
1211.06:065:08
1311.06:085:07
1410.96:095:05
1510.96:105:04
1610.96:115:02
1710.86:125:01
1810.86:134:59
1910.76:154:57
2010.76:164:56
2110.66:174:54
2210.66:184:53
2310.56:194:52
2410.56:214:50
2510.46:224:49
2610.46:234:47
2710.46:244:46
2810.36:264:45
2910.36:274:43
3010.26:284:42
3110.26:294:41

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.12 kWh/m².

For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 6.42 kWh/m² in June across the year — October's 3.12 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.3Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Is October a good time to visit Westchester?

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

5.3
Sightseeing
6th-best month of the year
1.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit Westchester for sightseeing.

What to pack for Westchester in October

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

In October, Westchester sees daytime highs around 62°F and nights near 44°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Westchester in October

The nearest coast averages about 58°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 mi away) is warmest in August at about 73°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 13 to Sep 15 — about 2.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May45Bracing
Jun57Bracing
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Westchester in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Westchester peaks around June 23 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 23UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Westchester 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 Westchester is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 921 µg/m³Oct 2410 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar18Moderate
Apr19Moderate
May20Moderate
Jun21Moderate
Jul21Moderate
Aug18Moderate
Sep15Moderate
Oct10Good
Nov10Good
Dec11Good
Location & terrain

Where is Westchester?

Westchester sits at 41.9°N, 87.9°W, 636 ft above sea level, in United States. The nearest listed city is Bellwood, 1.9 mi away.

Topography around Westchester

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

Within 2 miles, the terrain around Westchester has only modest variations in elevation — a maximum elevation change of 118 ft around an average of 650 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 427 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 751 ft.

The land around Westchester is covered by artificial surfaces (52%) and trees (31%) within 2 miles, artificial surfaces (58%) and trees (30%) within 10 miles, and cropland (28%), water (27%) and trees (20%) within 50 miles.

2 miles
118 ft
10 miles
427 ft
50 miles
751 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Bellwood 1.9 mi · Brookfield 2.5 mi · Maywood 3.1 mi · La Grange 3.1 mi · Melrose Park 3.7 mi · Hinsdale 4.3 mi · Elmhurst 4.3 mi · Berwyn 4.3 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 Westchester (41.8506°, -87.882°, elevation 636 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).