Forecast Details for Sumner, IL

Recent Locations: Comanche, OK Butler, GA Sumner, IL

Current Alerts for Sumner, IL: Flood Warning

Today: A 30 percent chance of showers and thunderstorms, mainly between noon and 4pm. Mostly cloudy, with a high near 81. South southwest wind around 16 mph, with gusts as high as 23 mph.

Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 66. South wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers and possibly a thunderstorm. Temperature falling to around 59 by 5pm. South southwest wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday Night: Showers likely before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 40. West northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Sunny, with a high near 56. Northwest wind 8 to 15 mph, with gusts as high as 20 mph.

Sunday Night: Mostly clear, with a low around 38. West wind 5 to 8 mph.

Monday: Sunny, with a high near 60. Northwest wind 7 to 14 mph, with gusts as high as 20 mph.

Monday Night: Mostly clear, with a low around 33.

Tuesday: Sunny, with a high near 53.

Tuesday Night: Partly cloudy, with a low around 36.

Wednesday: Mostly sunny, with a high near 67.

Wednesday Night: Partly cloudy, with a low around 51.

Thursday: Mostly sunny, with a high near 74.

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

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)

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 are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

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