South Milwaukee weather in August

In August, South Milwaukee sees average daytime highs of 75°F and overnight lows near 69°F, with 3.5 in of rain across 10.3 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 75°F through the month. The sky is clear or mostly clear about 43% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is South Milwaukee's 1st-clearest and 11th-windiest month. For the whole year in context, see South Milwaukee's year-round climate.

Daytime high
75°
1st warmest
Overnight low
69°
12th coldest
Rainfall
3.5 in
10.3 wet days
Daylight
13 h 48 min
5:03 AM – 6:49 PM
Cloud cover
50%
1st clearest
Wind
11 mph
11th windiest
Solar energy
5.48 kWh/m²
Travel score
7.1
out of 10

South Milwaukee is city in Milwaukee County, Wisconsin, United States.

Density
1,692/km²
people per km²

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 75°F through the month.

A typical August day in South Milwaukee reaches about 75°F in the afternoon and slips back to 69°F overnight — a 6°F spread between the day's warmth and the night's chill. On most days the high lands between 69°F and 81°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°70°80°151015202531
Avg high (°F)Avg low (°F)
17670
27670
37670
47570
57570
67570
77570
87570
97570
107570
117570
127570
137570
147570
157569
167569
177569
187569
197569
207569
217569
227569
237569
247569
257469
267469
277469
287469
297468
307468
317468

How August really feels in South Milwaukee

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.

South Milwaukee weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 21°2.49.77.89.20.0
Feb30° / 21°2.17.25.810.20.0
Mar35° / 27°2.69.43.911.60.0
Apr43° / 37°4.311.51.713.10.5
May53° / 47°3.410.6014.42.9
Jun66° / 60°3.19.9015.15.9
Jul74° / 69°2.89014.87.2
Aug75° / 69°3.510.3013.87.1
Sep69° / 63°3.39.5012.36.6
Oct57° / 51°3.610.40.110.84.1
Nov45° / 39°3.09.91.49.51.0
Dec36° / 29°2.69.25.48.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46139
56139
66040
76040
86040
96040
106040
116040
126040
135941
146040
156040
165941
175941
185941
195941
205941
215941
225842
235941
245941
255941
266040
276040
286139
296238
306238
316238

Chance of precipitation in August

Any precipitation

South Milwaukee gets around 3.5 in of rain over 10.3 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 (%)
131
231
331
432
532
632
732
832
932
1032
1133
1233
1333
1433
1534
1634
1734
1834
1934
2035
2135
2235
2335
2434
2534
2633
2733
2832
2931
3030
3130

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 44% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16192729172
26192729172
36192729172
47192729172
57202628172
67202729162
77202728162
88202728162
98202728152
108202828152
118202828141
128202828141
138202929131
148212928131
158212929131
168212829121
178202830121
188202830121
198202831121
208202831120
218202831120
228202832120
239212731120
249212731120
259212631120
2610222631120
2710222630120
2811222529120
2912232529120
3013232528110
3114232527110

Wind in August

Winds average 11 mph in August.

Across August, daily wind ranges from about 11 mph on the calmest days to 12 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:46 AM to 5:19 AM, and sunset from 7:09 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:467:09
214.34:477:08
314.34:487:06
414.34:497:05
514.24:507:04
614.24:527:03
714.14:537:01
814.14:547:00
914.14:556:59
1014.04:566:57
1114.04:576:56
1213.94:586:55
1313.94:596:53
1413.95:006:52
1513.85:016:50
1613.85:036:49
1713.75:046:47
1813.75:056:45
1913.65:066:44
2013.65:076:42
2113.55:086:41
2213.55:096:39
2313.55:106:37
2413.45:116:36
2513.45:136:34
2613.35:146:32
2713.35:156:31
2813.25:166:29
2913.25:176:27
3013.15:186:25
3113.15:196:24

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.48 kWh/m².

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 6.51 kWh/m² in June across the year — August's 5.48 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
315.0Bright
Planning a trip in August

Is August a good time to visit South Milwaukee?

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

7.1
Sightseeing
2nd-best month of the year
5.9
Beach & pool
1st-best month of the year

August is one of the better times to visit South Milwaukee for general sightseeing.

What to pack for South Milwaukee in August

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

In August, South Milwaukee sees daytime highs around 75°F and nights near 69°F. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near South Milwaukee in August

The nearest coast averages about 70°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 70°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 24 to Sep 2 — about 1.3 months when the water holds above 68°F.

30°40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr38Bracing
May43Bracing
Jun55Bracing
Jul67Cool
Aug70Refreshing
Sep66Cool
Oct56Bracing
Nov47Bracing
Dec41Bracing

UV index in South Milwaukee 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 South Milwaukee peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in South Milwaukee 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 South Milwaukee is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1017 µg/m³Oct 249 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar15Moderate
Apr15Moderate
May16Moderate
Jun17Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is South Milwaukee?

South Milwaukee sits at 42.9°N, 87.9°W, 669 ft above sea level, in United States. The nearest listed city is Oak Creek, 1.9 mi away.

Topography around South Milwaukee

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

Within 2 miles, the terrain around South Milwaukee has only modest variations in elevation — a maximum elevation change of 190 ft around an average of 653 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 400 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 840 ft.

The land around South Milwaukee is covered by artificial surfaces (34%), trees (25%) and water (25%) within 2 miles, water (44%) within 10 miles, and water (49%) within 50 miles.

2 miles
190 ft
10 miles
400 ft
50 miles
840 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Oak Creek 1.9 mi · Cudahy 3.1 mi · Caledonia 8.1 mi · Greenfield 8.7 mi · Franklin 9.3 mi · Milwaukee 9.3 mi · West Allis 11 mi · Wauwatosa 12 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 South Milwaukee (42.9106°, -87.8606°, elevation 669 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).