Forecast Details for Sun Prairie, WI

Recent Locations: Homestead, PA Decatur, TN Sun Prairie, WI

Tonight: Cloudy, with a low around 36. West wind 10 to 15 mph, with gusts as high as 25 mph.

Friday: A 10 percent chance of showers after 5pm. Mostly cloudy, with a high near 54. West wind 5 to 10 mph becoming east in the afternoon.

Friday Night: Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 4am, then showers likely after 4am. Low around 38. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: A 30 percent chance of showers, mainly before 10am. Mostly cloudy, with a high near 50. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

Saturday Night: Mostly cloudy, with a low around 32. West wind around 15 mph, with gusts as high as 30 mph.

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 48. Northwest wind around 15 mph.

Sunday Night: Partly cloudy, with a low around 34. West wind 5 to 10 mph.

Monday: Partly sunny, with a high near 47. Northwest wind 10 to 15 mph.

Monday Night: Partly cloudy, with a low around 24.

Tuesday: Sunny, with a high near 45.

Tuesday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

Wednesday: A chance of rain and snow showers. Partly sunny, with a high near 58. Breezy. Chance of precipitation is 30%.

Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 44.

Thursday: A 40 percent chance of showers. Partly sunny, with a high near 60.

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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

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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog