Forecast Details for Lansing, IL

Recent Locations: Durango, IA Stover, MO Lansing, IL

Current Alerts for Lansing, IL: Flood Watch Severe Thunderstorm Warning
Tornado Watch

Tonight: Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 50. Breezy, with a south southwest wind 20 to 25 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Partly sunny, with a high near 58. West wind 5 to 10 mph becoming northeast in the afternoon.

Friday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Temperature falling to near 46 by 8pm, then rising to around 60 during the remainder of the night. Northeast wind 10 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

Saturday Night: Mostly cloudy, with a low around 37. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph.

Sunday: Partly sunny, with a high near 50.

Sunday Night: Partly cloudy, with a low around 37.

Monday: Mostly sunny, with a high near 52.

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

Tuesday: Mostly sunny, with a high near 42.

Tuesday Night: Mostly cloudy, with a low around 32.

Wednesday: Mostly cloudy, with a high near 60.

Wednesday Night: A chance of showers. Mostly cloudy, with a low around 48.

Thursday: A chance of showers. Partly sunny, with a high near 65.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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