Forecast Details for Chantilly, VA

Recent Locations: Chantilly, VA  
Tonight: Scattered showers and thunderstorms after 2am. Increasing clouds, with a low around 64. Northwest wind 6 to 11 mph becoming light in the evening. Chance of precipitation is 30%.
Thursday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 76. Calm wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 58. East wind 7 to 10 mph becoming west after midnight. Chance of precipitation is 50%.
Friday: A chance of showers after 8am. Mostly cloudy, with a high near 67. Northwest wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Friday Night: Mostly cloudy, with a low around 48. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 68. Chance of precipitation is 40%.
Saturday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Sunday Night: A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 49. Chance of precipitation is 30%.
Monday: Mostly sunny, with a high near 74.
Monday Night: Partly cloudy, with a low around 54.
Tuesday: A chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Tuesday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 50%.

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North America Water Vapor (Moisture)

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Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds

Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Stratus Clouds Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds