Forecast Details for Spring Valley, WI

Recent Locations: Crystal Spring, PA Spring Valley, WI Progreso, TX

Current Alerts for Spring Valley, WI: Winter Storm Warning

This Afternoon: A 10 percent chance of showers after 5pm. Cloudy, with a high near 47. East wind around 15 mph.

Tonight: Rain showers, snow showers and sleet, possibly mixed with freezing rain before 3am, then freezing rain and sleet, possibly mixed with snow showers between 3am and 4am, then freezing rain and sleet after 4am. The sleet could be heavy at times. Low around 31. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than one inch possible.

Thursday: Freezing rain and sleet before 11am, then rain or freezing rain between 11am and noon, then rain showers after noon. High near 37. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New ice accumulation of 0.1 to 0.3 of an inch possible. New sleet accumulation of less than a half inch possible.

Thursday Night: A 40 percent chance of showers before 1am. Cloudy, with a low around 28. North northeast wind around 10 mph becoming west northwest after midnight.

Friday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 45. North wind 5 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 34. East northeast wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: A chance of rain showers before 4pm, then a chance of snow showers. Mostly cloudy, with a high near 40. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night: A 30 percent chance of snow showers, mainly before 7pm. Mostly cloudy, with a low around 27. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

Sunday: Mostly sunny, with a high near 46. Northwest wind around 15 mph.

Sunday Night: Mostly cloudy, with a low around 31. West northwest wind around 10 mph.

Monday: A slight chance of rain and snow showers. Mostly cloudy, with a high near 44. Northwest wind 10 to 15 mph. Chance of precipitation is 20%.

Monday Night: A 10 percent chance of snow showers. Partly cloudy, with a low around 23. North northeast wind 5 to 10 mph.

Tuesday: Sunny, with a high near 45. Northeast wind 5 to 10 mph becoming south southeast in the afternoon.

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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 is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet