Forecast Details for Roscoe, IL

Recent Locations: Crescent City, IL Elm Grove, WI Roscoe, IL

Current Alerts for Roscoe, IL: Flood Watch

This Afternoon: Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 71. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Low around 57. South wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Thursday: A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 69. West wind 5 to 10 mph becoming north northwest in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 50%.

Thursday Night: Mostly clear, with a low around 51. West southwest wind around 5 mph becoming east southeast in the evening. Winds could gust as high as 10 mph.

Friday: A 30 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

Friday Night: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Low around 42. Chance of precipitation is 90%.

Saturday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 52. Breezy.

Saturday Night: Partly cloudy, with a low around 31.

Sunday: Sunny, with a high near 50.

Sunday Night: Patchy frost after 2am. Otherwise, partly cloudy, with a low around 30.

Monday: Patchy frost. Otherwise, sunny, with a high near 59.

Monday Night: Partly cloudy, with a low around 47.

Tuesday: Mostly sunny, with a high near 70.

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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 Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

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