Forecast Details for Mercer, WI

Recent Locations: Pelham, AL Custer, SD Mercer, WI

Current Alerts for Mercer, WI: Ice Storm Warning

Today: Freezing rain, possibly mixed with sleet before 10am, then rain, freezing rain, and sleet likely between 10am and 11am, then a chance of rain and snow after 11am. High near 36. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Total daytime ice accumulation of 0.1 to 0.2 of an inch possible. Total daytime snow and sleet accumulation of less than a half inch possible.

Tonight: Snow likely, mainly before 9pm. Cloudy, with a low around 24. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Sunday: Increasing clouds, with a high near 42. Northwest wind around 10 mph, with gusts as high as 20 mph.

Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 24. West wind 5 to 10 mph, with gusts as high as 15 mph.

Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 30. Blustery, with a north wind 10 to 15 mph, with gusts as high as 25 mph. New snow accumulation of less than one inch possible.

Monday Night: Mostly cloudy, with a low around 4. North wind 5 to 10 mph becoming light northwest in the evening. Winds could gust as high as 15 mph.

Tuesday: Sunny, with a high near 37. Calm wind becoming southwest around 5 mph in the afternoon.

Tuesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 24. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday: A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 51. Breezy, with a south wind around 15 mph, with gusts as high as 25 mph.

Wednesday Night: A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. West wind around 10 mph, with gusts as high as 20 mph.

Thursday: A chance of rain and snow. Mostly cloudy, with a high near 45. Northwest wind around 10 mph, with gusts as high as 15 mph.

Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 25. Northeast wind around 5 mph becoming east after midnight.

Friday: A chance of rain and snow. Mostly cloudy, with a high near 44. East wind 5 to 10 mph, with gusts as high as 15 mph.

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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)

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 Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails