Dale City in Summer
In summer (June, July and August), Dale City sees average daytime highs around 86°F and overnight lows near 69°F, with 10.9 in of rain over about 33 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 86°F. The sky is clear or mostly clear about 27% of the time across summer, and the air most often feels muggy.
Summer is Dale City's 3rd-best season to visit on our travel score. For the whole year in context, see Dale City's year-round climate.
- Avg daytime high
- 86°F
- warmest season of the year
- Avg overnight low
- 69°F
- Rainfall
- 10.9 in
- 33 wet days
- Avg wind
- 5 mph
- Travel score
- 4.9
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Dale City in Summer
Across summer, daytime highs hold fairly steady around 86°F.
A typical summer day in Dale City reaches about 86°F and drops to 69°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Dale City
Once humidity and wind are folded in, summer brings about 25 days that feel above 90°F and 0 that feel at or below 32°F.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Dale City weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 43° / 29° | 3.1 | 8.7 | 2.8 | 9.6 | 0.6 |
| Feb | 46° / 31° | 2.8 | 8.5 | 2.5 | 10.5 | 1.4 |
| Mar | 55° / 38° | 3.9 | 10.3 | 1.7 | 11.7 | 3.5 |
| Apr | 66° / 48° | 3.4 | 9.9 | 0 | 13 | 6.0 |
| May | 75° / 57° | 3.7 | 11.4 | 0 | 14.1 | 6.5 |
| Jun | 84° / 66° | 3.5 | 11.4 | 0 | 14.6 | 5.4 |
| Jul | 88° / 71° | 3.8 | 11.7 | 0 | 14.4 | 4.3 |
| Aug | 86° / 69° | 3.5 | 10.1 | 0 | 13.5 | 5.1 |
| Sep | 79° / 62° | 4.3 | 9.4 | 0 | 12.3 | 6.8 |
| Oct | 67° / 51° | 3.4 | 7.9 | 0 | 11 | 6.6 |
| Nov | 56° / 40° | 2.9 | 7.6 | 0.2 | 9.9 | 4.2 |
| Dec | 47° / 33° | 3.4 | 8.9 | 1.6 | 9.3 | 1.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 27% of the time across summer.
Chance of precipitation in Summer
Dale City gets around 10.9 in of rain over 33 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 min in early June to 12 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.8 kWh/m².
Hazard calendar for Dale City
In summer, Dale City overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Dale City sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit Dale City?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Dale City for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Dale City in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Dale City sees daytime highs around 86°F and nights near 69°F. Pack light clothes and sun protection. Worth having: rain gear. About 33 days see rain.
UV index in Dale City in Summer
Clear-sky midday UV across summer averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Dale City peaks around July 11 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 7 | 6 | 4 | 3 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Dale City in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Dale City 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 12 | 13 | 13 | 15 | 16 | 17 | 15 | 12 | 9 | 9 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 12 | Moderate |
| Mar | 13 | Moderate |
| Apr | 13 | Moderate |
| May | 15 | Moderate |
| Jun | 16 | Moderate |
| Jul | 17 | Moderate |
| Aug | 15 | Moderate |
| Sep | 12 | Moderate |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 10 | Good |
Where is Dale City?
Dale City sits at 38.6°N, 77.3°W, 230 ft above sea level, in United States. The nearest listed city is Montclair, 2.5 mi away.
Topography around Dale City
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Dale City.
Within 2 miles, the terrain around Dale City has only modest variations in elevation — a maximum elevation change of 364 ft around an average of 220 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 571 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,514 ft.
The land around Dale City is covered by trees (60%) and artificial surfaces (32%) within 2 miles, trees (72%) within 10 miles, and trees (68%) within 50 miles.
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
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 Dale City (38.6371°, -77.3111°, elevation 230 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.