Forecast Details for Roscoe, IL

Recent Locations: Calcium, NY Reliance, SD Roscoe, IL

Current Alerts for Roscoe, IL: Special Weather Statement

Overnight: Snow showers likely before 5am, then snow showers likely, possibly mixed with freezing rain and sleet. Cloudy, with a low around 28. West southwest wind 5 to 10 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Total nighttime snow and sleet accumulation of less than a half inch possible.

Friday: Scattered snow showers, mainly before 7am. Cloudy, with a high near 35. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.

Friday Night: Mostly clear, with a low around 6. Wind chill values as low as -4. North wind 5 to 15 mph, with gusts as high as 30 mph.

Saturday: Increasing clouds, with a high near 22. Wind chill values as low as -4. North wind around 5 mph becoming south southeast in the afternoon.

Saturday Night: Mostly cloudy, with a low around 16. South southeast wind 5 to 10 mph.

Sunday: Mostly cloudy, with a high near 33.

Sunday Night: Mostly cloudy, with a low around 22.

Monday: Partly sunny, with a high near 42.

Monday Night: Partly cloudy, with a low around 30.

Tuesday: Partly sunny, with a high near 45.

Tuesday Night: A chance of rain and snow. Cloudy, with a low around 28.

Wednesday: Mostly cloudy, with a high near 36.

Wednesday Night: Mostly cloudy, with a low around 22.

Thursday: Mostly cloudy, with a high near 34.

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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 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

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds