Forecast Details for Block Island, RI

Recent Locations: Spencer, NY Wallace, IN Block Island, RI

Overnight: A chance of showers. Patchy fog. Otherwise, cloudy, with a low around 61. Breezy, with an east wind around 23 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: A chance of showers, mainly before 8am. Cloudy, with a high near 68. Breezy, with a northeast wind 21 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 62. Windy, with a northeast wind around 29 mph.

Friday: Sunny, with a high near 75. Breezy, with a north wind 17 to 24 mph.

Friday Night: Mostly clear, with a low around 66. East wind around 10 mph becoming southwest after midnight.

Saturday: Sunny, with a high near 74. Southwest wind 9 to 14 mph.

Saturday Night: Mostly clear, with a low around 67. South wind 11 to 13 mph.

Sunday: Mostly sunny, with a high near 73. South wind 11 to 15 mph.

Sunday Night: A chance of showers after 11pm. Mostly cloudy, with a low around 68. South wind 11 to 13 mph. Chance of precipitation is 40%.

Monday: A chance of showers. Partly sunny, with a high near 74. South wind 10 to 13 mph. Chance of precipitation is 50%.

Monday Night: A chance of showers. Partly cloudy, with a low around 65. South wind around 10 mph becoming west after midnight. Chance of precipitation is 30%.

Tuesday: Sunny, with a high near 74. West wind 11 to 14 mph.

Tuesday Night: Mostly clear, with a low around 62. West wind around 14 mph.

Wednesday: Sunny, with a high near 72. West wind 11 to 14 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 is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

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