Forecast Details for Block Island, RI

Recent Locations: Seminary, MS Delaware, OK Block Island, RI

Tonight: Patchy drizzle between 4am and 5am. The drizzle could be heavy at times. Patchy dense fog. Otherwise, mostly cloudy, with a low around 45. Southwest wind around 16 mph.

Saturday: Partly sunny, with a high near 52. Northwest wind 7 to 15 mph becoming east in the afternoon.

Saturday Night: A chance of showers, mainly after 10pm. Patchy fog after midnight. Otherwise, cloudy, with a low around 40. East wind 10 to 16 mph. Chance of precipitation is 30%.

Sunday: Showers, mainly after noon. Patchy fog after 2pm. High near 50. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night: Showers, mainly before 8pm. Patchy fog before 8pm. Low around 41. Southwest wind 10 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

Monday: Sunny, with a high near 46. West wind 13 to 16 mph.

Monday Night: Partly cloudy, with a low around 39. West wind 6 to 11 mph.

Tuesday: A chance of showers between 11am and 2pm. Mostly sunny, with a high near 44. West wind 8 to 11 mph. Chance of precipitation is 30%.

Tuesday Night: Mostly clear, with a low around 33. North wind 10 to 13 mph.

Wednesday: Sunny, with a high near 41. North wind 7 to 11 mph becoming southeast in the afternoon.

Wednesday Night: Mostly clear, with a low around 38. South wind around 10 mph.

Thursday: Mostly sunny, with a high near 47. South wind 10 to 13 mph.

Thursday Night: Partly cloudy, with a low around 44. South wind around 13 mph.

Friday: Mostly sunny, with a high near 50. Southwest wind 9 to 11 mph becoming south in the afternoon.

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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)

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 Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails