Fort Washington in Summer
In summer (June, July and August), Fort Washington sees average daytime highs around 86°F and overnight lows near 69°F, with 10.8 in of rain over about 32 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 86°F. The sky is clear or mostly clear about 28% of the time across summer, and the air most often feels muggy.
Summer is Fort Washington's 3rd-best season to visit on our travel score. For the whole year in context, see Fort Washington's year-round climate.
- Avg daytime high
- 86°F
- warmest season of the year
- Avg overnight low
- 69°F
- Rainfall
- 10.8 in
- 32 wet days
- Avg wind
- 5 mph
- Travel score
- 5.0
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Fort Washington in Summer
Across summer, daytime highs hold fairly steady around 86°F.
A typical summer day in Fort Washington 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 Fort Washington
Once humidity and wind are folded in, summer brings about 26 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.
Fort Washington 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 | 44° / 29° | 3.0 | 8.6 | 2.7 | 9.6 | 0.7 |
| Feb | 47° / 31° | 2.8 | 8.2 | 2.4 | 10.5 | 1.5 |
| Mar | 55° / 38° | 3.9 | 10.3 | 1.6 | 11.7 | 3.6 |
| Apr | 66° / 48° | 3.3 | 9.9 | 0.1 | 13 | 6.0 |
| May | 75° / 57° | 3.6 | 11.1 | 0 | 14.1 | 6.6 |
| Jun | 84° / 67° | 3.5 | 10.8 | 0 | 14.7 | 5.5 |
| Jul | 88° / 71° | 3.8 | 11.9 | 0 | 14.4 | 4.3 |
| Aug | 86° / 70° | 3.5 | 9.7 | 0 | 13.5 | 5.1 |
| Sep | 79° / 62° | 4.2 | 9.2 | 0 | 12.3 | 6.8 |
| Oct | 68° / 51° | 3.4 | 7.8 | 0 | 11 | 6.7 |
| Nov | 57° / 40° | 2.9 | 7.3 | 0.2 | 9.9 | 4.3 |
| Dec | 48° / 34° | 3.4 | 8.8 | 1.3 | 9.3 | 1.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 28% of the time across summer.
Chance of precipitation in Summer
Fort Washington gets around 10.8 in of rain over 32 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 5.9 kWh/m².
Hazard calendar for Fort Washington
In summer, Fort Washington overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Fort Washington sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit Fort Washington?
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 Fort Washington for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Fort Washington in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Fort Washington sees daytime highs around 86°F and nights near 69°F. Pack light clothes and sun protection. Worth having: rain gear. About 32 days see rain.
Sea temperature near Fort Washington in Summer
The nearest coast averages about 74°F across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 35 mi away) is warmest in August at about 78°F and coldest in February near 37°F.
It's comfortable for a long swim from Jun 16 to Oct 6 — about 3.7 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 38 | 37 | 40 | 47 | 57 | 68 | 76 | 78 | 74 | 65 | 54 | 45 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Refreshing | Warm | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 38 | Bracing |
| Feb | 37 | Bracing |
| Mar | 40 | Bracing |
| Apr | 47 | Bracing |
| May | 57 | Bracing |
| Jun | 68 | Refreshing |
| Jul | 76 | Warm |
| Aug | 78 | Warm |
| Sep | 74 | Refreshing |
| Oct | 65 | Cool |
| Nov | 54 | Bracing |
| Dec | 45 | Bracing |
UV index in Fort Washington 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 Fort Washington 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 Fort Washington 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 Fort Washington 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 Fort Washington?
Fort Washington sits at 38.7°N, 77.0°W, 105 ft above sea level, in United States. The nearest listed city is Fort Hunt, 2.5 mi away.
Topography around Fort Washington
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fort Washington.
Within 2 miles, the terrain around Fort Washington has only modest variations in elevation — a maximum elevation change of 259 ft around an average of 72 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 387 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,539 ft.
The land around Fort Washington is covered by trees (58%) and water (27%) within 2 miles, trees (67%) within 10 miles, and trees (60%) 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 Fort Washington (38.7073°, -77.023°, elevation 105 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.