Forecast Details for Mercer, WI

Recent Locations: Chauncey, GA Council, ID Mercer, WI

Current Alerts for Mercer, WI: Winter Storm Watch Winter Weather Advisory

Overnight: A 40 percent chance of snow. Cloudy, with a low around 25. East wind around 10 mph, with gusts as high as 20 mph.

Thursday: Snow, freezing rain, and sleet before 2pm, then freezing rain and sleet between 2pm and 5pm, then sleet after 5pm. High near 33. Breezy, with an east wind 10 to 15 mph, with gusts as high as 25 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 around an inch possible.

Thursday Night: Snow, freezing rain, and sleet likely before 2am, then a slight chance of snow between 2am and 3am. Cloudy, with a low around 25. Northeast wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than a half inch possible.

Friday: A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 38. North wind around 10 mph, with gusts as high as 15 mph.

Friday Night: Rain or freezing rain before 10pm, then freezing rain between 10pm and 4am, then snow and freezing rain after 4am. Some thunder is also possible. Low around 28. Breezy, with an east wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Saturday: Snow and freezing rain before 10am, then rain and snow between 10am and 4pm, then snow likely after 4pm. High near 37. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Saturday Night: A chance of snow before 1am. Mostly cloudy, with a low around 22. Northwest wind around 10 mph, with gusts as high as 20 mph.

Sunday: Mostly sunny, with a high near 41. Northwest wind around 10 mph, with gusts as high as 20 mph.

Sunday Night: A chance of snow. Mostly cloudy, with a low around 25. West wind around 5 mph, with gusts as high as 15 mph.

Monday: A chance of snow. Mostly cloudy, with a high near 36. Northwest wind around 10 mph, with gusts as high as 20 mph.

Monday Night: A slight chance of snow. Mostly cloudy, with a low around 11. North wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph.

Tuesday: Mostly sunny, with a high near 39. East wind 5 to 10 mph becoming south in the afternoon.

Tuesday Night: A chance of snow. Mostly cloudy, with a low around 24. Breezy, with a south wind 5 to 15 mph, with gusts as high as 25 mph.

Wednesday: A chance of rain and snow. Mostly cloudy, with a high near 50. Breezy, with a south wind around 15 mph, with gusts as high as 25 mph.

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North America Water Vapor (Moisture)

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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

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds