Ashburn weather in June

In June, Ashburn sees average daytime highs of 83°F and overnight lows near 65°F, with 3.4 in of rain across 11.2 wet days and about 14.7 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 80°F in the first days to 86°F by the end. The sky is clear or mostly clear about 24% of the time in June, and the air most often feels muggy.

Daylight stretches from about 14 h 30 min at the start of June to 14 h 42 min by month's end. Set against the rest of the year, June is Ashburn's 11th-clearest and 9th-windiest month. For the whole year in context, see Ashburn's year-round climate.

Daytime high
83°
3rd warmest
Overnight low
65°
10th coldest
Rainfall
3.4 in
11.2 wet days
Daylight
14 h 42 min
4:48 AM – 7:32 PM
Cloud cover
62%
11th clearest
Wind
6 mph
9th windiest
Solar energy
6.15 kWh/m²
Travel score
5.5
out of 10

Ashburn is census-designated place in Loudoun County, Virginia, United States.

Density
972/km²
people per km²
Founded
1802

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 80°F in the first days to 86°F by the end.

A typical June day in Ashburn reaches about 83°F in the afternoon and slips back to 65°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 92°F. Set against its neighbours, June runs about 9°F warmer than May and about 4°F cooler than July.

50°60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
17961
28061
38062
48062
58162
68162
78163
88263
98263
108264
118264
128364
138364
148365
158365
168465
178465
188466
198466
208566
218566
228567
238567
248567
258667
268667
278667
288668
298668
308768

How June really feels in Ashburn

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.

Ashburn weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 28°3.08.639.60.3
Feb45° / 29°2.88.1310.51.1
Mar54° / 36°3.810211.73.3
Apr66° / 46°3.410.30.1135.8
May74° / 56°3.811.3014.16.5
Jun83° / 65°3.411.2014.75.5
Jul88° / 69°3.911.8014.54.4
Aug85° / 68°3.310.4013.55.1
Sep78° / 60°4.49.5012.36.7
Oct67° / 49°3.47.80116.5
Nov55° / 38°3.07.60.39.93.9
Dec46° / 32°3.59.12.19.31.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 21% of June, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54555
64456
74456
84357
94357
104357
114357
124456
134357
144357
154357
164456
174456
184456
194456
204654
214654
224654
234753
244753
254753
264753
274852
284951
294951
304951

Chance of precipitation in June

Any precipitation

Ashburn gets around 3.4 in of rain over 11.2 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 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
235
334
434
534
635
735
835
935
1036
1136
1237
1337
1438
1538
1639
1739
1839
1939
2039
2139
2239
2339
2439
2539
2639
2739
2839
2939
3039

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the muggy band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 36% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1372122182
2362122192
3362121202
4352121212
5342121222
6332020233
7332020243
8322020254
9312019264
10302019265
11281919276
12271920286
13261920297
14241920298
15231920308
16221920309
17211921309
182019213010
191919213110
201819223110
211719223110
221719233111
231619233111
241519233211
251519233211
261419233212
271419233212
281318233213
291318233213
301317233314

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
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 30 min at the start of June to 14 h 42 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 4:52 AM to 4:52 AM, and sunset from 7:23 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:527:23
214.54:517:24
314.64:517:25
414.64:507:25
514.64:507:26
614.64:507:27
714.64:497:27
814.64:497:28
914.74:497:29
1014.74:497:29
1114.74:497:30
1214.74:497:30
1314.74:497:31
1414.74:487:31
1514.74:487:32
1614.74:487:32
1714.74:487:32
1814.74:497:33
1914.74:497:33
2014.74:497:33
2114.74:497:34
2214.74:497:34
2314.74:497:34
2414.74:507:34
2514.74:507:34
2614.74:507:34
2714.74:507:35
2814.74:517:35
2914.74:517:35
3014.74:527:35

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.15 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.95 kWh/m² to a high of 6.15 kWh/m² in June across the year — June's 6.15 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in June

Is June a good time to visit Ashburn?

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

5.5
Sightseeing
5th-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for Ashburn in June

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

In June, Ashburn sees daytime highs around 83°F and nights near 65°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Ashburn 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 Ashburn peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 10UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Ashburn 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 Ashburn 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 129 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Ashburn?

Ashburn sits at 39.0°N, 77.5°W, 295 ft above sea level, in United States. The nearest listed city is Sterling, 4.3 mi away.

Topography around Ashburn

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

Within 2 miles, the terrain around Ashburn has only modest variations in elevation — a maximum elevation change of 299 ft around an average of 299 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 840 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,609 ft.

The land around Ashburn is covered by trees (54%) and artificial surfaces (27%) within 2 miles, trees (56%) and grassland (22%) within 10 miles, and trees (65%) and grassland (20%) within 50 miles.

2 miles
299 ft
10 miles
840 ft
50 miles
3,609 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Sterling 4.3 mi · Leesburg 6.2 mi · Herndon 7.5 mi · South Riding 8.7 mi · Oak Hill 9.3 mi · Reston 9.3 mi · Chantilly 11 mi · Great Falls 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 Ashburn (39.0437°, -77.4875°, elevation 295 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).