Grayslake weather in June

In June, Grayslake sees average daytime highs of 76°F and overnight lows near 62°F, with 3.6 in of rain across 11.4 wet days and about 15 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 71°F in the first days to 79°F by the end. The sky is clear or mostly clear about 32% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of June to 15 h 06 min by month's end. Set against the rest of the year, June is Grayslake's 4th-clearest and 10th-windiest month. For the whole year in context, see Grayslake's year-round climate.

Daytime high
76°
3rd warmest
Overnight low
62°
10th coldest
Rainfall
3.6 in
11.4 wet days
Daylight
15 h 06 min
4:20 AM – 7:25 PM
Cloud cover
59%
4th clearest
Wind
8 mph
10th windiest
Solar energy
6.4 kWh/m²
Travel score
6.5
out of 10

Grayslake is village in Lake County, Illinois, United States.

Founded
1840

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 71°F in the first days to 79°F by the end.

A typical June day in Grayslake reaches about 76°F in the afternoon and slips back to 62°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 86°F. Set against its neighbours, June runs about 11°F warmer than May and about 5°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17157
27157
37158
47258
57258
67259
77359
87360
97460
107460
117461
127561
137562
147562
157662
167663
177663
187763
197764
207764
217864
227864
237865
247865
257865
267965
277965
287965
297966
307966

How June really feels in Grayslake

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.

Grayslake weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 19°2.39.16.49.30.0
Feb33° / 20°2.07.25.310.30.0
Mar42° / 29°2.69.73.211.60.6
Apr53° / 40°4.412.21.213.12.9
May64° / 51°4.112.3014.45.3
Jun76° / 62°3.611.40156.5
Jul80° / 67°3.310.8014.86.4
Aug79° / 66°3.610.7013.76.7
Sep72° / 58°2.99012.36.9
Oct60° / 46°3.39.50.110.84.8
Nov46° / 35°2.68.51.49.61.4
Dec35° / 25°2.48.84.590.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 16% of June, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34555
44555
54555
64555
74456
84456
94555
104555
114555
124555
134555
144555
154654
164654
174753
184852
194951
204951
215050
225149
235248
245347
255446
265446
275446
285545
295545
305644

Chance of precipitation in June

Any precipitation

Grayslake gets around 3.6 in of rain over 11.4 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 38% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
340
440
540
640
739
839
939
1038
1138
1238
1338
1439
1539
1639
1738
1838
1938
2038
2137
2237
2337
2437
2536
2636
2736
2836
2935
3035

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
158181680
256191780
354201790
4522117100
5502218100
6482218110
7462318120
8442419130
9422420140
10402520151
11372521161
12352621171
13332622181
14302622202
15282623212
16262623222
17252624232
18232624233
19222624243
20212624254
21212624264
22202524264
23192524275
24192424275
25192424286
26182424286
27182324287
28182324288
29172324288
30172324289

Wind in June

Winds average 8 mph in June.

Across June, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 54 min at the start of June to 15 h 06 min 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 7:15 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:247:15
214.94:237:16
314.94:237:17
414.94:237:18
514.94:227:18
615.04:227:19
715.04:217:20
815.04:217:21
915.04:217:21
1015.04:217:22
1115.04:207:22
1215.04:207:23
1315.14:207:23
1415.14:207:24
1515.14:207:24
1615.14:207:25
1715.14:207:25
1815.14:207:26
1915.14:207:26
2015.14:207:26
2115.14:207:27
2215.14:217:27
2315.14:217:27
2415.14:217:27
2515.14:217:27
2615.14:227:27
2715.14:227:27
2815.14:227:28
2915.14:237:28
3015.14:237:27

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.4 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 6.4 kWh/m² in June across the year — June's 6.4 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in June

Is June a good time to visit Grayslake?

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

6.5
Sightseeing
3rd-best month of the year
5.5
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Grayslake for sightseeing.

What to pack for Grayslake in June

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

In June, Grayslake sees daytime highs around 76°F and nights near 62°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Grayslake in June

The nearest coast averages about 55°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 9 mi away) 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 Grayslake 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 Grayslake 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 Grayslake 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 Grayslake 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 Grayslake?

Grayslake sits at 42.3°N, 88.0°W, 784 ft above sea level, in United States. The nearest listed city is Round Lake, 2.5 mi away.

Topography around Grayslake

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

Within 2 miles, the terrain around Grayslake has only modest variations in elevation — a maximum elevation change of 118 ft around an average of 794 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 308 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 787 ft.

The land around Grayslake is covered by grassland (31%), trees (25%) and artificial surfaces (25%) within 2 miles, trees (37%) and grassland (28%) within 10 miles, and water (33%), cropland (24%) and trees (20%) within 50 miles.

2 miles
118 ft
10 miles
308 ft
50 miles
787 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Round Lake 2.5 mi · Round Lake Beach 3.1 mi · Mundelein 6.2 mi · Libertyville 6.2 mi · Gurnee 7.5 mi · Vernon Hills 9.3 mi · Waukegan 9.9 mi · North Chicago 11 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 Grayslake (42.3445°, -88.0417°, elevation 784 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).