Forecast Details for Casey, IL

Recent Locations: Casey, IL  
This Afternoon: Sunny, with a high near 60. West southwest wind around 15 mph, with gusts as high as 22 mph.
Tonight: Mostly clear, with a low around 40. Southwest wind around 9 mph, with gusts as high as 18 mph.
Friday: Mostly sunny, with a high near 69. West southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Friday Night: A 50 percent chance of showers after 10pm. Mostly cloudy, with a low around 56. Breezy, with a south wind 13 to 21 mph, with gusts as high as 30 mph.
Saturday: Partly sunny, with a high near 72. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 30 mph.
Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 50. West wind 8 to 10 mph becoming east northeast after midnight. Winds could gust as high as 16 mph.
Sunday: Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 68. East northeast wind 10 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Monday: Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%.
Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 51. Breezy. Chance of precipitation is 80%.
Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 61. Breezy.
Tuesday Night: Partly cloudy, with a low around 36.
Wednesday: Mostly sunny, with a high near 52. Breezy.

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Current U.S. National Radar--Current

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Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow