Northbrook weather in June

In June, Northbrook sees average daytime highs of 71°F and overnight lows near 64°F, with 3.5 in of rain across 10.5 wet days and about 15 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 66°F in the first days to 75°F by the end. The sky is clear or mostly clear about 34% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 48 min at the start of June to 15 hours by month's end. Set against the rest of the year, June is Northbrook's 4th-clearest and 10th-windiest month. For the whole year in context, see Northbrook's year-round climate.

Daytime high
71°
3rd warmest
Overnight low
64°
10th coldest
Rainfall
3.5 in
10.5 wet days
Daylight
15 h 06 min
4:20 AM – 7:23 PM
Cloud cover
57%
4th clearest
Wind
11 mph
10th windiest
Solar energy
6.5 kWh/m²
Travel score
6.5
out of 10

Northbrook is village in Illinois, United States.

Density
977/km²
people per km²
Founded
1901

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 66°F in the first days to 75°F by the end.

A typical June day in Northbrook reaches about 71°F in the afternoon and slips back to 64°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 81°F. Set against its neighbours, June runs about 13°F warmer than May and about 7°F cooler than July.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16558
26558
36658
46659
56759
66760
76860
86861
96961
106962
117062
127062
137063
147163
157164
167264
177264
187265
197365
207365
217366
227466
237466
247467
257567
267567
277567
287568
297668
307668

How June really feels in Northbrook

Once humidity and wind are folded in, June 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

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

Northbrook weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 5th-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 15% of June, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54555
64654
74654
84654
94654
104555
114555
124654
134654
144753
154753
164753
174753
184951
195050
205149
215248
225347
235446
245545
255545
265644
275644
285743
295743
305842

Chance of precipitation in June

Any precipitation

Northbrook gets around 3.5 in of rain over 10.5 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
336
436
536
636
735
835
935
1035
1135
1235
1335
1435
1536
1636
1736
1836
1936
2036
2135
2235
2335
2435
2534
2634
2734
2833
2933
3033

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
156201491
253211592
3512116102
4492217112
5462218122
6442319122
7422320132
8392420142
9372421153
10352422163
11322423174
12302523184
13282524195
14262524205
15242525206
16222525217
17212525218
18192526228
19182526229
201725262210
211625262211
221624262311
231524262312
241424262313
251424262313
261323262314
271223262414
281223272415
291122272416
301122272416

Wind in June

Winds average 11 mph in June.

Across June, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
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
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 48 min at the start of June to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:24 AM to 4:23 AM, and sunset from 7:14 PM to 7:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:247:14
214.94:237:15
314.94:237:15
414.94:227:16
514.94:227:17
614.94:227:18
715.04:217:18
815.04:217:19
915.04:217:20
1015.04:217:20
1115.04:207:21
1215.04:207:21
1315.04:207:22
1415.04:207:22
1515.04:207:23
1615.14:207:23
1715.14:207:24
1815.14:207:24
1915.14:207:24
2015.14:207:25
2115.14:207:25
2215.14:207:25
2315.14:217:25
2415.14:217:26
2515.14:217:26
2615.14:227:26
2715.14:227:26
2815.14:227:26
2915.14:237:26
3015.04:237:26

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.5 kWh/m² — the sunniest month for solar.

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 — June's 6.5 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in June

Is June a good time to visit Northbrook?

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

6.5
Sightseeing
4th-best month of the year
4.3
Beach & pool
4th-best month of the year

June is a reasonable time to visit Northbrook for sightseeing.

What to pack for Northbrook in June

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

In June, Northbrook sees daytime highs around 71°F and nights near 64°F. Pack sun protection. Worth having: rain gear. About 11 days see rain.

sun protectionrain gear

Sea temperature near Northbrook in June

The nearest coast averages about 56°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 11 mi away) is warmest in August at about 72°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 14 to Sep 14 — 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
May44Bracing
Jun56Bracing
Jul69Refreshing
Aug72Refreshing
Sep68Refreshing
Oct58Bracing
Nov48Bracing
Dec42Bracing

UV index in Northbrook in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Northbrook 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 Northbrook in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Northbrook 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 Northbrook?

Northbrook sits at 42.1°N, 87.8°W, 646 ft above sea level, in United States. The nearest listed city is Deerfield, 3.1 mi away.

Topography around Northbrook

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

Within 2 miles, the terrain around Northbrook has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 673 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 240 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Northbrook is covered by trees (46%) and artificial surfaces (35%) within 2 miles, trees (35%), artificial surfaces (29%) and water (25%) within 10 miles, and water (40%) within 50 miles.

2 miles
135 ft
10 miles
240 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Deerfield 3.1 mi · Highland Park 3.7 mi · Glenview 4.3 mi · Wheeling 5.0 mi · Prospect Heights 6.2 mi · Morton Grove 6.2 mi · Wilmette 6.8 mi · Buffalo Grove 6.8 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 Northbrook (42.1275°, -87.829°, elevation 646 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).