Forecast Details for Chantilly, VA

Recent Locations: Chantilly, VA

Today: A chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 91. Heat index values as high as 102. South wind 7 to 10 mph. Chance of precipitation is 30%.

Tonight: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 75. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.

Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.

Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Northwest wind around 6 mph. Chance of precipitation is 50%.

Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

Saturday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

Sunday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.

Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.

Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

Drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation