Forecast Details for Union Hill, IL

Recent Locations: Carthage, MO Forest Ranch, CA Union Hill, IL

Tonight: A chance of showers, then showers and possibly a thunderstorm after 10pm. Low around 42. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: Showers and thunderstorms. High near 72. Breezy, with a southeast wind 15 to 20 mph becoming south 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and thunderstorms, mainly before 1am. Low around 55. Breezy, with a south wind 20 to 25 mph becoming west 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Scattered showers and thunderstorms after 1pm. Partly sunny, with a high near 71. West southwest wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 50%.

Friday Night: Showers and possibly a thunderstorm. Low around 60. East southeast wind 5 to 15 mph becoming south southwest after midnight. Chance of precipitation is 90%.

Saturday: Showers likely and possibly a thunderstorm before 1pm, then scattered showers and thunderstorms after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

Saturday Night: Mostly cloudy, with a low around 35.

Sunday: Partly sunny, with a high near 52.

Sunday Night: Mostly clear, with a low around 34.

Monday: Mostly sunny, with a high near 56.

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

Tuesday: Mostly sunny, with a high near 49.

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

Wednesday: Mostly sunny, with a high near 61.

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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