Bloomingdale weather in October

In October, Bloomingdale sees average daytime highs of 61°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 67°F in the first days to 55°F by the end. The sky is clear or mostly clear about 33% 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 Bloomingdale's 4th-clearest and 6th-windiest month. For the whole year in context, see Bloomingdale's year-round climate.

Daytime high
61°
6th warmest
Overnight low
44°
7th coldest
Precipitation
3.1 in
9.1 wet days
Daylight
10 h 48 min
6:12 AM – 5:03 PM
Cloud cover
59%
4th clearest
Wind
9 mph
6th windiest
Solar energy
3.08 kWh/m²
Travel score
5.2
out of 10

Bloomingdale is suburb village of Chicago, located in DuPage County, Illinois, United States.

Density
1,220/km²
people per km²
Founded
1833

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 67°F in the first days to 55°F by the end.

A typical October day in Bloomingdale reaches about 61°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 49°F and 74°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)
16850
26749
36749
46749
56648
66648
76547
86547
96547
106446
116446
126346
136345
146245
156244
166144
176144
186044
196043
205943
215943
225842
235842
245742
255741
265641
275641
285540
295540
305540
315439

How October really feels in Bloomingdale

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.

Bloomingdale 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°2.18.16.19.30.0
Feb35° / 20°1.96.94.810.30.0
Mar46° / 30°2.59.73.211.71.2
Apr57° / 40°4.312.3113.13.8
May68° / 50°4.312.5014.35.9
Jun78° / 61°3.9120156.3
Jul82° / 66°3.611.4014.76.0
Aug80° / 64°3.710.5013.76.5
Sep74° / 56°2.98.5012.37.1
Oct61° / 44°3.19.10.110.95.2
Nov47° / 33°2.48.11.39.61.6
Dec36° / 24°2.18.24.390.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45347
55347
65248
75248
85248
95248
105149
115149
125149
135050
145050
154951
164852
174852
184753
194654
204456
214456
224357
234258
244258
254060
263961
274060
283961
293961
303961
313961

Chance of precipitation in October

Any precipitation

Bloomingdale 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 (%)
129
228
328
428
528
628
728
828
928
1028
1128
1228
1328
1429
1529
1630
1730
1831
1931
2031
2131
2231
2331
2430
2530
2630
2730
2829
2929
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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1771373
2771373
3801262
4801262
5821152
6821152
7821152
8841042
9841042
1086941
1188831
1288831
1389731
1489731
1590721
1691720
1792620
1892620
1992620
2092620
2192620
2293520
2393520
2494510
2594510
2694510
2795410
2895410
2995410
3095410
3195410

Wind in October

Winds average 9 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
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 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 5:55 AM to 6:30 AM, and sunset from 5:28 PM to 4:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:555:28
211.55:565:26
311.55:575:24
411.45:585:23
511.45:595:21
611.36:005:19
711.36:015:17
811.26:035:16
911.26:045:14
1011.16:055:12
1111.16:065:11
1211.06:075:09
1311.06:085:08
1410.96:105:06
1510.96:115:04
1610.86:125:03
1710.86:135:01
1810.86:145:00
1910.76:164:58
2010.76:174:57
2110.66:184:55
2210.66:194:54
2310.56:204:52
2410.56:224:51
2510.46:234:49
2610.46:244:48
2710.46:254:47
2810.36:274:45
2910.36:284:44
3010.26:294:43
3110.26:304:41

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.08 kWh/m².

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 6.43 kWh/m² in June across the year — October's 3.08 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.5Moderate
83.5Moderate
93.4Moderate
103.4Moderate
113.3Moderate
123.3Moderate
133.3Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.0Moderate
183.0Moderate
193.0Moderate
202.9Moderate
212.9Moderate
222.8Moderate
232.8Moderate
242.7Moderate
252.7Moderate
262.6Moderate
272.6Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Is October a good time to visit Bloomingdale?

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

5.2
Sightseeing
6th-best month of the year
1.2
Beach & pool
6th-best month of the year

October is a reasonable time to visit Bloomingdale for sightseeing.

What to pack for Bloomingdale in October

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

In October, Bloomingdale sees daytime highs around 61°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 Bloomingdale 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 24 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 Bloomingdale 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 Bloomingdale 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 Bloomingdale 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 Bloomingdale 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 Bloomingdale?

Bloomingdale sits at 42.0°N, 88.1°W, 764 ft above sea level, in United States. The nearest listed city is Roselle, 1.9 mi away.

Topography around Bloomingdale

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

Within 2 miles, the terrain around Bloomingdale has only modest variations in elevation — a maximum elevation change of 174 ft around an average of 768 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 390 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 863 ft.

The land around Bloomingdale is covered by artificial surfaces (40%), trees (36%) and grassland (22%) within 2 miles, artificial surfaces (40%), trees (35%) and grassland (21%) within 10 miles, and cropland (34%) and water (23%) within 50 miles.

2 miles
174 ft
10 miles
390 ft
50 miles
863 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Roselle 1.9 mi · Glendale Heights 3.1 mi · Carol Stream 4.3 mi · Hanover Park 4.3 mi · Addison 5.0 mi · Schaumburg 5.0 mi · Glen Ellyn 5.6 mi · Hoffman Estates 5.6 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 Bloomingdale (41.9575°, -88.0809°, elevation 764 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).