Forecast Details for Saybrook, IL

Recent Locations: Spout Spring, VA Geff, IL Saybrook, IL

Overnight: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 52. West wind 10 to 17 mph, with gusts as high as 30 mph.

Friday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 76. West wind 6 to 11 mph becoming south in the morning. Winds could gust as high as 16 mph.

Friday Night: Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers after 5am. Low around 57. South southeast wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a temperature falling to around 52 by 5pm. Breezy, with a west wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night: Partly cloudy, with a low around 35. West wind 14 to 18 mph, with gusts as high as 31 mph.

Sunday: Mostly sunny, with a high near 51. West northwest wind 14 to 18 mph, with gusts as high as 25 mph.

Sunday Night: Mostly clear, with a low around 35. West wind 8 to 11 mph, with gusts as high as 17 mph.

Monday: Sunny, with a high near 54.

Monday Night: Partly cloudy, with a low around 29.

Tuesday: Mostly sunny, with a high near 49.

Tuesday Night: Partly cloudy, with a low around 33.

Wednesday: Partly sunny, with a high near 64. Breezy.

Wednesday Night: Mostly cloudy, with a low around 49.

Thursday: A chance of showers. Partly sunny, with a high near 70. Breezy.

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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 Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

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