Current Conditions

Chantilly, Virginia

59°F15°C
Rain

Wind

NE 8 mph14 km/h

Humidity

96%

Cloud Cover

100%

As of Tuesday, September 22, 2026 at 6:41 PM EDT

Today's Outlook

Night

Overcast, with a low around 59°F15°C. Breezy from the NE at 9 mph14 km/h. 100% chance of rain throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
RainHigh 60°F16°CLow 59°F15°CPrecip 0.38 in9.6 mm100%Cloud 100%Wind NE 9 mph14 km/hTuesday: Overcast and mild, with a high of 60°F16°C. Breezy from the NE at 9 mph14 km/h. 100% chance of rain throughout the day. Tuesday Night: Overcast, with a low around 59°F15°C. Breezy from the NE at 9 mph14 km/h. 100% chance of rain throughout the night.
Light RainHigh 64°F18°CLow 56°F13°CPrecip 0.16 in4 mm90%Cloud 91%Wind NE 9 mph14 km/hWednesday: Overcast and mild, with a high of 64°F18°C and morning low of 56°F13°C. Breezy from the NE at 9 mph14 km/h. 56% chance of light rain in the morning. Wednesday Night: Overcast, with a low around 57°F14°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 90% chance of light rain overnight.
CloudyHigh 66°F19°CLow 54°F12°CPrecip 0 in0 mmCloud 82%Wind NNE 8 mph13 km/hThursday: Overcast and mild, with a high of 66°F19°C and morning low of 54°F12°C. Breezy from the NNE at 9 to 10 mph14 to 16 km/h. Dry air. Thursday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the NNE at 7 to 9 mph11 to 14 km/h.
Partly CloudyHigh 74°F23°CLow 51°F11°CPrecip 0.02 in0.4 mm5%Cloud 52%Wind N 10 mph15 km/hFriday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 52°F11°C. Breezy from the N at 10 to 11 mph17 to 18 km/h. Dry air. Friday Night: Mostly cloudy, with a low around 51°F11°C. Breezy from the N at 9 to 10 mph14 to 16 km/h.
DrizzleHigh 73°F23°CLow 58°F14°CPrecip 0.06 in1.6 mm14%Cloud 47%Wind NNW 10 mph16 km/hSaturday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 58°F14°C. Breezy from the NNW at 11 mph17 km/h. 14% chance of drizzle throughout the day. Dry air. Saturday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the NNW at 10 mph15 km/h. 13% chance of drizzle in the evening.
DrizzleHigh 69°F21°CLow 60°F15°CPrecip 0.06 in1.6 mm19%Cloud 79%Wind NW 9 mph15 km/hSunday: Overcast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Breezy from the NW at 10 to 11 mph16 to 17 km/h. 19% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 60°F15°C. Breezy from the NW at 8 to 9 mph13 to 15 km/h. 15% chance of drizzle throughout the night.
Partly CloudyHigh 73°F23°CLow 60°F16°CPrecip 0.02 in0.4 mm9%Cloud 70%Wind NW 6 mph10 km/hMonday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the NW at 6 to 7 mph10 to 12 km/h. Monday Night: Mostly cloudy, with a low around 60°F16°C. Light wind from the NW around 5 mph9 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 2260°F16°C59°F15°C0.38 in9.6 mm· 100%100%RainNE 9 mph14 km/h
WednesdaySep 2364°F18°C56°F13°C0.16 in4 mm· 90%91%Light RainNE 9 mph14 km/h
ThursdaySep 2466°F19°C54°F12°C0 in0 mm· —82%CloudyNNE 8 mph13 km/h
FridaySep 2574°F23°C51°F11°C0.02 in0.4 mm· 5%52%Partly CloudyN 10 mph15 km/h
SaturdaySep 2673°F23°C58°F14°C0.06 in1.6 mm· 14%47%DrizzleNNW 10 mph16 km/h
SundaySep 2769°F21°C60°F15°C0.06 in1.6 mm· 19%79%DrizzleNW 9 mph15 km/h
MondaySep 2873°F23°C60°F16°C0.02 in0.4 mm· 9%70%Partly CloudyNW 6 mph10 km/h
TuesdaySep 2978°F25°C60°F16°C0 in0.1 mm· 2%43%Partly CloudyNW 4 mph6 km/h
WednesdaySep 3080°F27°C59°F15°C0.01 in0.3 mm· 7%44%Partly CloudySSE 4 mph7 km/h
ThursdayOct 179°F26°C63°F17°C0.13 in3.4 mm· 24%70%Light RainS 6 mph9 km/h
FridayOct 277°F25°C64°F18°C0.18 in4.5 mm· 22%63%ShowersW 6 mph10 km/h
SaturdayOct 375°F24°C61°F16°C0.16 in4.1 mm· 18%58%ShowersNW 6 mph9 km/h
SundayOct 475°F24°C60°F16°C0.09 in2.3 mm· 20%62%DrizzleWSW 6 mph9 km/h
MondayOct 573°F23°C59°F15°C0.1 in2.6 mm· 20%54%ShowersWNW 6 mph9 km/h
TuesdayOct 672°F22°C57°F14°C0.09 in2.4 mm· 17%49%DrizzleWNW 6 mph10 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.

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