Current Conditions

Chantilly, Virginia

76°F25°C
Drizzle

Wind

NW 5 mph9 km/h

Humidity

70%

Cloud Cover

14%

As of Thursday, August 13, 2026 at 8:36 AM EDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 94°F34°C and morning low of 76°F25°C. Breezy from the NW at 6 to 7 mph10 to 11 km/h.

Night

Mostly cloudy, with a low around 75°F24°C. Light wind from the NW around 4 mph7 km/h. 10% chance of drizzle before dawn.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 94°F34°CLow 75°F24°CPrecip 0.01 in0.2 mm10%Cloud 60%Wind NW 5 mph8 km/hThursday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 76°F25°C. Breezy from the NW at 6 to 7 mph10 to 11 km/h. Thursday Night: Mostly cloudy, with a low around 75°F24°C. Light wind from the NW around 4 mph7 km/h. 10% chance of drizzle before dawn.
Light RainHigh 88°F31°CLow 75°F24°CPrecip 0.04 in1.1 mm26%Cloud 85%Wind N 3 mph6 km/hFriday: Overcast and hot, with a high of 88°F31°C and morning low of 77°F25°C. Light wind from the N around 3 mph5 km/h. 26% chance of light rain throughout the day. Humid. Friday Night: Mostly cloudy, with a low around 75°F24°C. Light wind from the N around 4 mph6 km/h.
Light RainHigh 88°F31°CLow 74°F23°CPrecip 0.1 in2.5 mm26%Cloud 79%Wind E 4 mph6 km/hSaturday: Overcast and hot, with a high of 88°F31°C and morning low of 76°F24°C. Light wind from the ENE around 3 mph5 km/h. 26% chance of light rain throughout the day. Humid. Saturday Night: Mostly cloudy, with a low around 74°F23°C. Light wind from the ESE around 4 mph7 km/h. 14% chance of drizzle throughout the night.
Light RainHigh 85°F29°CFeels 93°F34°CLow 75°F24°CPrecip 0.43 in10.8 mm71%Cloud 87%Wind S 6 mph10 km/hSunday: Overcast and warm, with a high of 85°F29°C and morning low of 76°F24°C — feels like 93°F34°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 71% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 75°F24°C. Light wind from the S around 6 mph9 km/h. 59% chance of light rain throughout the night.
ShowersHigh 91°F33°CFeels 97°F36°CLow 76°F24°CPrecip 0.13 in3.4 mm45%Cloud 58%Wind WNW 6 mph10 km/hMonday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 77°F25°C — feels like 97°F36°C. Breezy from the WNW at 7 mph11 km/h. 45% chance of showers throughout the day. Heat risk in the afternoon. Monday Night: Mostly cloudy, with a low around 76°F24°C. Light wind from the WNW around 6 mph9 km/h. 33% chance of showers throughout the night.
ClearHigh 88°F31°CLow 73°F23°CPrecip 0.01 in0.2 mm4%Cloud 30%Wind NNW 5 mph9 km/hTuesday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 74°F24°C. Light wind from the NNW around 6 mph9 km/h. Tuesday Night: Partly cloudy, with a low around 73°F23°C. Breezy from the NNW at 5 to 7 mph9 to 11 km/h.
DrizzleHigh 91°F33°CLow 69°F20°CPrecip 0.01 in0.2 mm10%Cloud 38%Wind SW 4 mph7 km/hWednesday: Partly cloudy and hot, with a high of 91°F33°C and morning low of 71°F22°C. Light wind from the SW around 4 mph6 km/h. 10% chance of drizzle. Wednesday Night: Partly cloudy, with a low around 69°F20°C. Light wind from the S around 5 mph8 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1394°F34°C75°F24°C0.01 in0.2 mm· 10%60%DrizzleNW 5 mph8 km/h
FridayAug 1488°F31°C75°F24°C0.04 in1.1 mm· 26%85%Light RainN 3 mph6 km/h
SaturdayAug 1588°F31°C74°F23°C0.1 in2.5 mm· 26%79%Light RainE 4 mph6 km/h
SundayAug 1685°F29°C
Feels 93°F34°C
75°F24°C0.43 in10.8 mm· 71%87%Light RainS 6 mph10 km/h
MondayAug 1791°F33°C
Feels 97°F36°C
76°F24°C0.13 in3.4 mm· 45%58%ShowersWNW 6 mph10 km/h
TuesdayAug 1888°F31°C73°F23°C0.01 in0.2 mm· 4%30%ClearNNW 5 mph9 km/h
WednesdayAug 1991°F33°C69°F20°C0.01 in0.2 mm· 10%38%DrizzleSW 4 mph7 km/h
ThursdayAug 2092°F33°C75°F24°C0.06 in1.5 mm· 19%56%DrizzleWSW 6 mph10 km/h
FridayAug 2186°F30°C72°F22°C0.1 in2.6 mm· 19%52%ShowersNNW 5 mph9 km/h
SaturdayAug 2284°F29°C68°F20°C0.12 in3 mm· 23%53%ShowersNNW 5 mph8 km/h
SundayAug 2385°F30°C67°F20°C0.1 in2.6 mm· 14%48%DrizzleNW 4 mph7 km/h
MondayAug 2487°F30°C68°F20°C0.06 in1.5 mm· 11%40%DrizzleW 5 mph8 km/h
TuesdayAug 2588°F31°C69°F20°C0.07 in1.7 mm· 14%38%DrizzleW 5 mph8 km/h
WednesdayAug 2688°F31°C69°F21°C0.07 in1.7 mm· 15%41%DrizzleWNW 5 mph8 km/h
ThursdayAug 2787°F31°C69°F21°C0.08 in2 mm· 17%45%DrizzleNW 5 mph8 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 38.8943°N, 77.4311°W·Elevation: 98m·Timezone: America/New_York·Population: 23,039