Merrillville weather in June

In June, Merrillville sees average daytime highs of 78°F and overnight lows near 62°F, with 4.0 in of rain across 11.8 wet days and about 14.9 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 74°F in the first days to 81°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 48 min at the start of June to 15 hours by month's end. Set against the rest of the year, June is Merrillville's 5th-clearest and 10th-windiest month. For the whole year in context, see Merrillville's year-round climate.

Daytime high
78°
3rd warmest
Overnight low
62°
10th coldest
Rainfall
4.0 in
11.8 wet days
Daylight
15 hours
4:20 AM – 7:19 PM
Cloud cover
59%
5th clearest
Wind
8 mph
10th windiest
Solar energy
6.59 kWh/m²
Travel score
6.4
out of 10

Merrillville is town in Ross Township, Lake County, Indiana.

Density
409/km²
people per km²
Founded
1971

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 74°F in the first days to 81°F by the end.

A typical June day in Merrillville reaches about 78°F in the afternoon and slips back to 62°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 87°F. Set against its neighbours, June runs about 10°F warmer than May and about 4°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17458
27458
37458
47559
57559
67560
77660
87660
97661
107761
117761
127862
137862
147862
157863
167963
177963
187964
197964
208064
218064
228064
238065
248065
258065
268065
278165
288165
298165
308165

How June really feels in Merrillville

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.

Merrillville weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 20°2.69.76.79.30.0
Feb35° / 22°2.17.75.210.30.0
Mar45° / 31°3.010.43.211.71.1
Apr57° / 41°4.212.2113.13.8
May68° / 52°4.412.6014.35.9
Jun78° / 62°4.011.8014.96.4
Jul82° / 67°3.912.1014.76.2
Aug80° / 65°3.810.7013.76.6
Sep74° / 57°3.18.9012.37.0
Oct62° / 46°3.39.90.210.95.2
Nov48° / 35°2.99.41.59.71.8
Dec37° / 26°2.49.14.49.10.0

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 17% of June, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24555
34654
44654
54654
64654
74654
84654
94654
104753
114753
124654
134654
144654
154654
164654
174654
184753
194852
204852
215050
225149
235248
245347
255347
265545
275545
285644
295644
305743

Chance of precipitation in June

Any precipitation

Merrillville gets around 4.0 in of rain over 11.8 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 40% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
341
441
541
641
741
841
941
1041
1141
1241
1341
1441
1540
1640
1740
1839
1939
2039
2138
2238
2338
2438
2538
2638
2738
2838
2938
3038

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 27% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1502116121
2482117131
3472217131
4452218141
5432219151
6412220151
7402320161
8382321172
9362322172
10342422182
11312423193
12292424203
13272424213
14262425224
15242326234
16222326245
17212326255
18202326256
19192326266
20182226267
21182226268
22172226268
23172226279
241721262710
251721252710
261621252711
271620252712
281620242713
291620242713
301520232714

Wind in June

Winds average 8 mph in June.

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

051015151015202530
Wind speed (mph)Feels
18light 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 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 7:10 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:247:10
214.84:237:11
314.84:237:11
414.84:227:12
514.84:227:13
614.94:227:14
714.94:217:14
814.94:217:15
914.94:217:16
1014.94:217:16
1114.94:207:17
1214.94:207:17
1315.04:207:18
1415.04:207:18
1515.04:207:19
1615.04:207:19
1715.04:207:19
1815.04:207:20
1915.04:207:20
2015.04:207:20
2115.04:207:21
2215.04:217:21
2315.04:217:21
2415.04:217:21
2515.04:217:22
2615.04:227:22
2715.04:227:22
2815.04:227:22
2915.04:237:22
3015.04:237:22

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.59 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 6.59 kWh/m² in June across the year — June's 6.59 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.8Intense
Planning a trip in June

Is June a good time to visit Merrillville?

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

6.4
Sightseeing
3rd-best month of the year
5.9
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Merrillville for sightseeing.

What to pack for Merrillville in June

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

In June, Merrillville sees daytime highs around 78°F and nights near 62°F. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Merrillville in June

The nearest coast averages about 59°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 10 mi away) is warmest in August at about 73°F and coldest in February near 35°F.

It's comfortable for a long swim from Jul 10 to Sep 16 — about 2.3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb35Bracing
Mar35Bracing
Apr39Bracing
May46Bracing
Jun59Cool
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Merrillville 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 Merrillville peaks around June 21 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 21UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Merrillville 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 Merrillville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar14Moderate
Apr13Moderate
May15Moderate
Jun15Moderate
Jul17Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Merrillville?

Merrillville sits at 41.5°N, 87.3°W, 656 ft above sea level, in United States. The nearest listed city is Crown Point, 5.0 mi away.

Topography around Merrillville

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

Within 2 miles, the terrain around Merrillville has only modest variations in elevation — a maximum elevation change of 131 ft around an average of 663 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 305 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 673 ft.

The land around Merrillville is covered by trees (34%), artificial surfaces (30%) and grassland (22%) within 2 miles, trees (39%), grassland (20%) and cropland (20%) within 10 miles, and cropland (42%) and water (22%) within 50 miles.

2 miles
131 ft
10 miles
305 ft
50 miles
673 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Crown Point 5.0 mi · Hobart 5.6 mi · Griffith 5.6 mi · Schererville 6.2 mi · Gary 7.5 mi · Highland 8.1 mi · Dyer 9.9 mi · Portage 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 Merrillville (41.4828°, -87.3328°, elevation 656 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).