North Chicago weather in July

In July, North Chicago sees average daytime highs of 78°F and overnight lows near 70°F, with 3.1 in of rain across 10.5 wet days and about 14.8 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 78°F through the month. The sky is clear or mostly clear about 41% of the time in July, and the air most often feels muggy.

Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is North Chicago's 3rd-clearest and 11th-windiest month. For the whole year in context, see North Chicago's year-round climate.

Daytime high
78°
1st warmest
Overnight low
70°
12th coldest
Rainfall
3.1 in
10.5 wet days
Daylight
14 h 48 min
4:33 AM – 7:21 PM
Cloud cover
51%
3rd clearest
Wind
10 mph
11th windiest
Solar energy
6.44 kWh/m²
Travel score
6.8
out of 10

North Chicago is city and suburb of Chicago, Illinois, USA.

Density
1,423/km²
people per km²
Founded
1892

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 78°F through the month.

A typical July day in North Chicago reaches about 78°F in the afternoon and slips back to 70°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 86°F. Set against its neighbours, July runs about 7°F warmer than June and on par with August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
17668
27669
37669
47769
57769
67769
77769
87770
97870
107870
117870
127870
137871
147871
157871
167871
177871
187871
197971
207971
217971
227871
237871
247871
257871
267871
277871
287871
297871
307871
317871

How July really feels in North Chicago

Once humidity and wind are folded in, July 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

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

North Chicago weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 21°2.99.879.30.0
Feb31° / 21°2.47.75.110.30.0
Mar37° / 29°3.09.83.211.60.0
Apr46° / 39°4.8121.413.11.3
May58° / 50°4.111.7014.44.1
Jun71° / 64°3.510.50156.5
Jul78° / 70°3.110.5014.86.8
Aug77° / 70°3.810.7013.77.0
Sep71° / 63°3.39.5012.36.8
Oct58° / 51°4.010.50.110.84.4
Nov46° / 39°3.4101.39.61.2
Dec36° / 28°3.1104.990.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 18% of July, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65842
75842
85941
95842
105842
115842
125842
135842
145842
155842
165842
175842
185842
195842
205842
215842
225941
235941
245941
255941
265941
276040
286040
295941
305941
315941

Chance of precipitation in July

Any precipitation

North Chicago gets around 3.1 in of rain over 10.5 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
633
733
833
934
1034
1134
1235
1335
1435
1536
1636
1736
1836
1936
2036
2136
2236
2336
2435
2535
2635
2735
2834
2934
3033
3133

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
110212824160
29212825170
39212825170
48202826170
58202826171
67202827171
77202827181
86192828181
96192828181
105182829191
115172729192
125172730202
134172730202
144162631202
154162631212
164162631213
174152532213
184152532213
194152532213
204152532213
214152532213
224152532213
234162532203
244162532203
255162531203
265162531203
275172531193
285172531193
295172531192
305172531192
315182531192

Wind in July

Winds average 10 mph in July.

Across July, daily wind ranges from about 10 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:23 AM to 4:47 AM, and sunset from 7:27 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:237:27
215.14:237:26
315.04:247:26
415.04:247:26
515.04:257:26
615.04:267:26
715.04:267:25
815.04:277:25
915.04:277:25
1014.94:287:24
1114.94:297:24
1214.94:307:23
1314.94:307:23
1414.94:317:22
1514.84:327:22
1614.84:337:21
1714.84:337:21
1814.84:347:20
1914.74:357:19
2014.74:367:19
2114.74:377:18
2214.74:387:17
2314.64:397:16
2414.64:407:15
2514.64:417:14
2614.54:427:13
2714.54:437:12
2814.54:447:11
2914.44:457:10
3014.44:467:09
3114.44:477:08

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.44 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 6.5 kWh/m² in June across the year — July's 6.44 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.1Intense
316.1Intense
Planning a trip in July

Is July a good time to visit North Chicago?

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

6.8
Sightseeing
2nd-best month of the year
6.3
Beach & pool
1st-best month of the year

July is a reasonable time to visit North Chicago for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for North Chicago in July

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

In July, North Chicago sees daytime highs around 78°F and nights near 70°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

Sea temperature near North Chicago in July

The nearest coast averages about 68°F in July — 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 71°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 18 to Sep 8 — about 1.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr38Bracing
May43Bracing
Jun55Bracing
Jul68Refreshing
Aug71Refreshing
Sep67Cool
Oct57Bracing
Nov47Bracing
Dec42Bracing

UV index in North Chicago in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in North Chicago 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
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in North Chicago in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in North Chicago 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 North Chicago?

North Chicago sits at 42.3°N, 87.8°W, 659 ft above sea level, in United States. The nearest listed city is Waukegan, 2.5 mi away.

Topography around North Chicago

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

Within 2 miles, the terrain around North Chicago has only modest variations in elevation — a maximum elevation change of 200 ft around an average of 640 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 318 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 787 ft.

The land around North Chicago is covered by artificial surfaces (32%) and water (32%) within 2 miles, water (42%) and trees (27%) within 10 miles, and water (44%) within 50 miles.

2 miles
200 ft
10 miles
318 ft
50 miles
787 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Waukegan 2.5 mi · Gurnee 4.3 mi · Lake Forest 4.3 mi · Libertyville 6.2 mi · Zion 8.1 mi · Mundelein 9.3 mi · Highland Park 9.9 mi · Vernon Hills 9.9 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 North Chicago (42.3256°, -87.8412°, elevation 659 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).