Shorewood weather in August

In August, Shorewood sees average daytime highs of 81°F and overnight lows near 64°F, with 3.5 in of rain across 9.8 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 81°F through the month. The sky is clear or mostly clear about 38% of the time in August, and the air most often feels humid.

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 Shorewood's 2nd-clearest and 12th-windiest month. For the whole year in context, see Shorewood's year-round climate.

Daytime high
81°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.5 in
9.8 wet days
Daylight
13 h 42 min
5:06 AM – 6:47 PM
Cloud cover
54%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.47 kWh/m²
Travel score
6.6
out of 10

Shorewood is village in Troy Township, Will County, Illinois, United States.

Founded
1830

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 81°F through the month.

A typical August day in Shorewood reaches about 81°F in the afternoon and slips back to 64°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 89°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
48265
58265
68265
78265
88264
98264
108264
118264
128264
138164
148164
158164
168164
178164
188164
198164
208164
218163
228163
238163
248163
258163
268163
278163
288162
298062
308062
318062

How August really feels in Shorewood

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.

Shorewood weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 18°2.28.35.69.30.0
Feb36° / 21°2.07.24.410.30.0
Mar48° / 31°2.89.62.711.71.7
Apr60° / 41°4.412.40.713.14.5
May71° / 52°4.612.5014.36.1
Jun80° / 62°4.311.6014.96.3
Jul83° / 66°3.610.6014.75.8
Aug81° / 64°3.59.8013.76.6
Sep75° / 56°2.98.1012.37.1
Oct63° / 44°3.290.110.95.5
Nov48° / 33°2.78.51.29.71.9
Dec37° / 24°2.28.23.79.10.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25644
35743
45743
55743
65743
75743
85743
95644
105644
115644
125644
135644
145644
155644
165545
175545
185644
195545
205545
215545
225545
235545
245644
255644
265743
275743
285941
295941
306040
316139

Chance of precipitation in August

Any precipitation

Shorewood gets around 3.5 in of rain over 9.8 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 31% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
429
529
629
729
829
929
1030
1130
1230
1331
1431
1531
1631
1732
1832
1932
2033
2133
2233
2333
2433
2532
2632
2731
2831
2930
3030
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 39% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
17232528161
27232528161
38232627161
48232627161
58232626161
68232626161
79232625161
89232625161
910232725151
1010232725151
1110232725151
1210232724151
1310232724141
1411232824141
1511222824141
1611222824141
1711222825131
1811222825131
1911222825131
2011222826131
2111222826131
2211222826121
2311222826121
2412222726121
2512232725121
2613242625121
2713242624111
2814242624110
2916252623100
301725252390
311825252290

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
276calm
286calm
296calm
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 4:51 AM to 5:22 AM, and sunset from 7:07 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:517:07
214.24:527:06
314.24:537:04
414.24:547:03
514.14:557:02
614.14:567:01
714.04:577:00
814.04:586:58
914.04:596:57
1013.95:006:56
1113.95:016:54
1213.85:026:53
1313.85:036:52
1413.85:046:50
1513.75:056:49
1613.75:066:47
1713.65:076:46
1813.65:096:44
1913.65:106:43
2013.55:116:41
2113.55:126:40
2213.45:136:38
2313.45:146:37
2413.35:156:35
2513.35:166:33
2613.25:176:32
2713.25:186:30
2813.25:196:29
2913.15:206:27
3013.15:216:25
3113.05:226:24

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.47 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 6.29 kWh/m² in June across the year — August's 5.47 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.8Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Shorewood?

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

6.6
Sightseeing
2nd-best month of the year
6.9
Beach & pool
2nd-best month of the year

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

What to pack for Shorewood in August

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

In August, Shorewood sees daytime highs around 81°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Shorewood 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 39 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 Shorewood 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 Shorewood peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 20UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Shorewood 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 Shorewood is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1917 µg/m³Oct 229 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb14Moderate
Mar14Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul17Moderate
Aug16Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Shorewood?

Shorewood sits at 41.5°N, 88.2°W, 577 ft above sea level, in United States. The nearest listed city is Crest Hill, 5.6 mi away.

Topography around Shorewood

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

Within 2 miles, the terrain around Shorewood has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 600 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 331 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 751 ft.

The land around Shorewood is covered by artificial surfaces (29%), trees (28%) and grassland (26%) within 2 miles, cropland (36%) and grassland (23%) within 10 miles, and cropland (55%) within 50 miles.

2 miles
115 ft
10 miles
331 ft
50 miles
751 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Crest Hill 5.6 mi · Joliet 6.2 mi · Plainfield 7.5 mi · Lockport 8.7 mi · Romeoville 11 mi · New Lenox 12 mi · Oswego 14 mi · Bolingbrook 14 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 Shorewood (41.52°, -88.2017°, elevation 577 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).