Brighton weather in June

In June, Brighton sees average daytime highs of 83°F and overnight lows near 55°F, with 1.5 in of rain across 7 wet days and about 14.8 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 78°F in the first days to 87°F by the end. The sky is clear or mostly clear about 39% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of June to 14 h 48 min by month's end. Set against the rest of the year, June is Brighton's 9th-clearest and 4th-windiest month. For the whole year in context, see Brighton's year-round climate.

Daytime high
83°
3rd warmest
Overnight low
55°
10th coldest
Rainfall
1.5 in
7 wet days
Daylight
14 h 48 min
4:35 AM – 7:24 PM
Cloud cover
49%
9th clearest
Wind
6 mph
4th windiest
Solar energy
7.39 kWh/m²
Travel score
6.3
out of 10

Brighton is city in and county seat of Adams County, Colorado, United States.

Density
716/km²
people per km²
Founded
1887

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 78°F in the first days to 87°F by the end.

A typical June day in Brighton reaches about 83°F in the afternoon and slips back to 55°F overnight — a 28°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 94°F. Set against its neighbours, June runs about 11°F warmer than May and about 6°F cooler than July.

40°60°80°100°151015202530
Avg high (°F)Avg low (°F)
17851
27852
37852
47952
57953
68053
78053
88053
98154
108154
118254
128254
138255
148255
158355
168355
178356
188456
198456
208556
218557
228557
238657
248658
258658
268758
278758
288759
298859
308859

How June really feels in Brighton

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.

Brighton 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
Jan42° / 19°0.53.33.59.50.4
Feb46° / 22°0.53.63.510.41.5
Mar56° / 29°1.35.43.411.74.3
Apr63° / 37°2.07.63.2135.8
May72° / 46°2.59.50.614.26.7
Jun83° / 55°1.57014.86.3
Jul89° / 61°1.36.9014.54.6
Aug87° / 60°1.25.7013.65.5
Sep79° / 51°1.04.20.412.37.7
Oct65° / 38°1.25.11.510.96.9
Nov52° / 27°0.74.13.39.83.4
Dec42° / 20°0.533.29.20.5

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 28% of June, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25941
36040
46139
56238
66337
76337
86337
96436
106535
116535
126634
136634
146733
156733
166733
176832
186931
196931
206931
217129
227129
237129
247228
257327
267327
277327
287327
297426
307426

Chance of precipitation in June

Any precipitation

Brighton gets around 1.5 in of rain over 7 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 24% and peaks near 32% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
132
231
330
430
529
629
728
828
927
1027
1127
1226
1326
1425
1524
1624
1723
1822
1922
2021
2120
2220
2319
2419
2518
2618
2717
2817
2917
3017

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1982
2973
3973
4973
5973
6964
7964
8964
9964
10955
11955
12955
13955
14955
15955
16955
17955
18955
19946
20946
21946
22946
23946
24946
25937
26937
27937
28928
29928
30919

Wind in June

Winds average 6 mph in June.

Across June, daily wind ranges from about 5 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
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 36 min at the start of June to 14 h 48 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 4:38 AM to 4:38 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)
114.64:387:15
214.64:387:16
314.74:377:17
414.74:377:18
514.74:377:18
614.74:367:19
714.74:367:20
814.74:367:20
914.84:367:21
1014.84:357:21
1114.84:357:22
1214.84:357:22
1314.84:357:23
1414.84:357:23
1514.84:357:24
1614.84:357:24
1714.84:357:25
1814.84:357:25
1914.84:357:25
2014.84:357:26
2114.84:357:26
2214.84:357:26
2314.84:367:26
2414.84:367:26
2514.84:367:27
2614.84:377:27
2714.84:377:27
2814.84:377:27
2914.84:387:27
3014.84:387:27

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 7.39 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 7.39 kWh/m² in June across the year — June's 7.39 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.4Intense
187.4Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.5Intense
257.5Intense
267.5Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
Planning a trip in June

Is June a good time to visit Brighton?

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

6.3
Sightseeing
4th-best month of the year
7.2
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Brighton for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Brighton in June

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

In June, Brighton sees daytime highs around 83°F and nights near 55°F. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Brighton in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Brighton peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 12UV 11Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb4Moderate
Mar7High
Apr6High
May7Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Brighton 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 Brighton is worst in August — around 21 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (May, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateAug 1620 µg/m³May 1113 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb15Moderate
Mar16Moderate
Apr13Moderate
May13Moderate
Jun14Moderate
Jul14Moderate
Aug21Moderate
Sep13Moderate
Oct15Moderate
Nov15Moderate
Dec16Moderate
Location & terrain

Where is Brighton?

Brighton sits at 40.0°N, 104.8°W, 4,984 ft above sea level, in United States. The nearest listed city is Northglenn, 11 mi away.

Topography around Brighton

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

Within 2 miles, the terrain around Brighton has only modest variations in elevation — a maximum elevation change of 194 ft around an average of 4,990 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 640 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,626 ft.

The land around Brighton is covered by artificial surfaces (34%), grassland (32%) and cropland (21%) within 2 miles, grassland (51%) and cropland (28%) within 10 miles, and grassland (48%), trees (22%) and cropland (20%) within 50 miles.

2 miles
194 ft
10 miles
640 ft
50 miles
9,626 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Northglenn 11 mi · Thornton 11 mi · Erie 13 mi · Commerce City 14 mi · Sherrelwood 14 mi · Lafayette 14 mi · Broomfield 15 mi · Westminster 16 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 Brighton (39.9853°, -104.8205°, elevation 4,984 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. 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).