Forecast Details for Sun Prairie, WI

Recent Locations: Watson, AL Prairie Lea, TX Sun Prairie, WI

This Afternoon: Mostly sunny, with a high near 47. East wind around 15 mph.

Tonight: Rain before 3am, then rain or freezing rain. Low around 32. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Little or no ice accumulation expected.

Thursday: Rain or freezing rain, becoming all rain after 7am. Some thunder is also possible. High near 65. East wind around 15 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

Thursday Night: Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Low around 39. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 62. West wind 5 to 10 mph becoming east in the afternoon.

Friday Night: Showers and possibly a thunderstorm. Low around 42. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 55. West wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 30. West wind around 15 mph, with gusts as high as 25 mph.

Sunday: Partly sunny, with a high near 49.

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

Monday: A chance of rain and snow showers. Partly sunny, with a high near 52. Chance of precipitation is 40%.

Monday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

Tuesday: A 10 percent chance of snow showers. Partly sunny, with a high near 47.

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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 are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds