Forecast Details for Williston, VT

Recent Locations: Williston, VT

Today: Sunny, with a high near 57. Calm wind becoming northwest around 6 mph in the afternoon.

Tonight: Clear, with a low around 35. Calm wind becoming southeast around 5 mph after midnight.

Saturday: Sunny, with a high near 64. South wind 6 to 13 mph.

Saturday Night: Showers likely, mainly after 1am. Increasing clouds, with a low around 46. South wind 10 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Showers likely, mainly before 7am. Mostly cloudy, with a high near 68. South wind 9 to 13 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 49. Light and variable wind becoming north 5 to 7 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.

Monday: Mostly cloudy, with a high near 65. North wind around 6 mph becoming calm in the morning.

Monday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 50. Calm wind becoming southeast 5 to 7 mph after midnight.

Tuesday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. South wind 10 to 13 mph. Chance of precipitation is 60%.

Tuesday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. Light northwest wind. Chance of precipitation is 60%.

Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 68. Calm wind becoming southwest around 6 mph in the afternoon.

Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 50. South wind around 6 mph becoming northwest after midnight.

Thursday: A 40 percent chance of showers. Partly sunny, with a high near 66. West wind 3 to 7 mph.

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Current U.S. National Radar--Current

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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)

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Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

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