Forecast Details for Spring Valley, WI

Recent Locations: Warren, OR Powder Springs, GA Spring Valley, WI

This Afternoon: Scattered showers. Mostly cloudy, with a high near 50. West northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Tonight: Scattered showers before 7pm. Mostly cloudy, with a low around 29. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Monday: Partly sunny, with a high near 36. North northwest wind around 15 mph, with gusts as high as 25 mph.

Monday Night: Mostly clear, with a low around 17. North northwest wind 10 to 15 mph becoming light north after midnight.

Tuesday: Mostly sunny, with a high near 42. Light and variable wind becoming south southeast 5 to 10 mph in the morning.

Tuesday Night: Rain likely, possibly mixed with snow showers, becoming all rain after 4am. Mostly cloudy, with a low around 32. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 37. West southwest wind 10 to 15 mph.

Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 52. West wind 10 to 15 mph.

Thursday Night: A slight chance of rain showers before 4am, then a slight chance of snow showers. Partly cloudy, with a low around 30. North northwest wind 5 to 10 mph. Chance of precipitation is 20%.

Friday: A slight chance of rain and snow showers. Sunny, with a high near 55. North northwest wind around 5 mph. Chance of precipitation is 20%.

Friday Night: A 20 percent chance of showers. Partly cloudy, with a low around 35. East southeast wind around 5 mph.

Saturday: A 40 percent chance of showers. Mostly sunny, with a high near 58. Southeast wind 5 to 10 mph.

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North America Water Vapor (Moisture)

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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