Lombard weather in August

In August, Lombard sees average daytime highs of 80°F and overnight lows near 64°F, with 3.7 in of rain across 10.5 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 80°F through the month. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Lombard's 2nd-clearest and 12th-windiest month. For the whole year in context, see Lombard's year-round climate.

Daytime high
80°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.7 in
10.5 wet days
Daylight
13 h 42 min
5:05 AM – 6:47 PM
Cloud cover
55%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.5 kWh/m²
Travel score
6.5
out of 10

Lombard is village in Illinois, United States.

Density
1,622/km²
people per km²
Founded
1869

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 80°F through the month.

A typical August day in Lombard reaches about 80°F in the afternoon and slips back to 64°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 88°F. Set against its neighbours, August runs about 2°F cooler than July and about 6°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18265
28265
38265
48165
58165
68165
78165
88165
98165
108164
118164
128064
138064
148064
158064
168064
178064
188064
198064
208064
218064
228064
238063
248063
258063
268063
278063
287963
297962
307962
317962

How August really feels in Lombard

Once humidity and wind are folded in, August 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

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

Lombard weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45347
55347
65347
75248
85248
95248
105248
115347
125347
135347
145347
155446
165446
175446
185446
195545
205446
215446
225545
235545
245545
255545
265743
275743
285842
295842
305941
315941

Chance of precipitation in August

Any precipitation

Lombard gets around 3.7 in of rain over 10.5 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
534
634
734
834
934
1034
1135
1235
1335
1435
1535
1635
1735
1835
1935
2035
2135
2234
2334
2433
2532
2631
2731
2830
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 25% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
110252427131
210252427131
310252427131
410262526130
511262526130
611252525130
711252525130
812252525130
912252525130
1012252624130
1113252624120
1213252624120
1313252624120
1413242624120
1514242624110
1614242625110
1714242625110
1814242626110
1914242626100
2013242627100
2113242627100
2213242627100
2313242527100
2414252527100
2514252526100
2614262526100
271526242590
281626242490
291726242490
301827242390
312027242280

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:49 AM to 5:21 AM, and sunset from 7:07 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:497:07
214.34:507:06
314.24:517:05
414.24:527:03
514.14:537:02
614.14:547:01
714.14:567:00
814.04:576:58
914.04:586:57
1014.04:596:56
1113.95:006:54
1213.95:016:53
1313.85:026:52
1413.85:036:50
1513.75:046:49
1613.75:056:47
1713.75:066:46
1813.65:076:44
1913.65:086:43
2013.55:096:41
2113.55:106:40
2213.45:116:38
2313.45:126:36
2413.45:146:35
2513.35:156:33
2613.35:166:32
2713.25:176:30
2813.25:186:28
2913.15:196:27
3013.15:206:25
3113.05:216:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.5 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 — August's 5.5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Lombard?

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

6.5
Sightseeing
2nd-best month of the year
6.6
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Lombard for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Lombard in August

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

In August, Lombard sees daytime highs around 80°F and nights near 64°F. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Lombard in August

The nearest coast averages about 73°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 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 Lombard in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lombard 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 Lombard in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lombard 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 Lombard?

Lombard sits at 41.9°N, 88.0°W, 719 ft above sea level, in United States. The nearest listed city is Villa Park, 1.2 mi away.

Topography around Lombard

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

Within 2 miles, the terrain around Lombard has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 719 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 518 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Lombard is covered by trees (47%) and artificial surfaces (40%) within 2 miles, artificial surfaces (44%) and trees (39%) within 10 miles, and cropland (33%) and water (23%) within 50 miles.

2 miles
115 ft
10 miles
518 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Villa Park 1.2 mi · Glen Ellyn 3.1 mi · Addison 3.7 mi · Elmhurst 3.7 mi · Glendale Heights 3.7 mi · Downers Grove 5.0 mi · Wheaton 5.0 mi · Westmont 6.2 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 Lombard (41.88°, -88.0078°, elevation 719 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).