Denville weather in June

In June, Denville sees average daytime highs of 78°F and overnight lows near 60°F, with 4.2 in of rain across 11.4 wet days and about 14.9 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 75°F in the first days to 82°F by the end. The sky is clear or mostly clear about 22% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of June to 14 h 54 min by month's end. Set against the rest of the year, June is Denville's 9th-clearest and 10th-windiest month. For the whole year in context, see Denville's year-round climate.

Daytime high
78°
3rd warmest
Overnight low
60°
10th coldest
Rainfall
4.2 in
11.4 wet days
Daylight
14 h 54 min
4:31 AM – 7:26 PM
Cloud cover
64%
9th clearest
Wind
6 mph
10th windiest
Solar energy
5.95 kWh/m²
Travel score
6.4
out of 10

Denville is town in Morris County, New Jersey, United States.

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 75°F in the first days to 82°F by the end.

A typical June day in Denville reaches about 78°F in the afternoon and slips back to 60°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 88°F. Set against its neighbours, June runs about 9°F warmer than May and about 5°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17456
27556
37557
47557
57557
67657
77658
87658
97658
107759
117759
127759
137860
147860
157860
167860
177961
187961
197961
208062
218062
228062
238062
248163
258163
268163
278163
288264
298264
308264

How June really feels in Denville

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.

Denville 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
Jan36° / 22°3.59.35.59.40.0
Feb39° / 23°3.08.74.510.40.0
Mar47° / 31°4.310.94.111.71.5
Apr59° / 41°3.8110.813.14.4
May69° / 51°3.911.9014.36.1
Jun78° / 60°4.211.4014.96.4
Jul83° / 65°4.210.8014.65.6
Aug81° / 64°4.010.4013.66.3
Sep74° / 56°4.59.5012.36.9
Oct62° / 45°4.18.90.210.95.5
Nov51° / 35°3.38.30.99.72.5
Dec41° / 28°4.19.73.99.10.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 19% of June, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74060
84060
94060
103961
113961
123961
133961
144060
154060
164060
174159
184159
194258
204258
214258
224258
234357
244258
254357
264357
274456
284456
294456
304456

Chance of precipitation in June

Any precipitation

Denville gets around 4.2 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 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
139
238
338
438
538
638
738
838
938
1037
1137
1237
1337
1437
1537
1637
1738
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2837
2937
3037

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
153211880
252211980
351211990
450221990
5492219100
6482319100
7472319110
8462319111
9442419121
10432420121
11412520131
12402521131
13382521141
14362622142
15352623152
16332624152
17322624162
18312625162
19302625172
20282626183
21272626183
22262626193
23252627193
24242527204
25232527204
26222527215
27222527225
28212427226
29212426236
30202426237

Wind in June

Winds average 6 mph in June.

Across June, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 42 min at the start of June to 14 h 54 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 4:34 AM to 4:34 AM, and sunset from 7:17 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:347:17
214.74:347:17
314.74:337:18
414.84:337:19
514.84:327:20
614.84:327:20
714.84:327:21
814.84:327:22
914.84:317:22
1014.94:317:23
1114.94:317:23
1214.94:317:24
1314.94:317:24
1414.94:317:25
1514.94:317:25
1614.94:317:26
1714.94:317:26
1814.94:317:26
1914.94:317:27
2014.94:317:27
2114.94:317:27
2214.94:317:28
2314.94:317:28
2414.94:327:28
2514.94:327:28
2614.94:327:28
2714.94:337:28
2814.94:337:28
2914.94:337:28
3014.94:347:28

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.95 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.72 kWh/m² to a high of 5.95 kWh/m² in June across the year — June's 5.95 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Bright
206.0Intense
216.0Intense
226.0Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
Planning a trip in June

Hazard calendar for Denville

In seasonPeak

In June, Denville sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Denville sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Denville?

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

6.4
Sightseeing
2nd-best month of the year
6.0
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Denville for sightseeing.

What to pack for Denville in June

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

In June, Denville sees daytime highs around 78°F and nights near 60°F. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Denville in June

The nearest coast averages about 65°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 37 mi away) is warmest in August at about 74°F and coldest in February near 40°F.

It's comfortable for a long swim from Jun 30 to Sep 26 — about 2.9 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan43Bracing
Feb40Bracing
Mar41Bracing
Apr46Bracing
May55Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct63Cool
Nov55Bracing
Dec48Bracing

UV index in Denville in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Denville peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 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 highHighModerateLowJul 11UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Denville 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 Denville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Denville?

Denville sits at 40.9°N, 74.5°W, 505 ft above sea level, in United States. The nearest listed city is Parsippany, 3.7 mi away.

Topography around Denville

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

Within 2 miles, the terrain around Denville has only modest variations in elevation — a maximum elevation change of 482 ft around an average of 591 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,266 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,425 ft.

The land around Denville is covered by trees (75%) within 2 miles, trees (81%) within 10 miles, and trees (69%) within 50 miles.

2 miles
482 ft
10 miles
1,266 ft
50 miles
2,425 ft
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Parsippany 3.7 mi · Dover 4.3 mi · Randolph 6.2 mi · Morristown 6.8 mi · Madison 9.9 mi · Hopatcong Hills 11 mi · Wayne 11 mi · Livingston 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 Denville (40.8923°, -74.4774°, elevation 505 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).