Forecast Details for Fairmount, IL

Recent Locations: Russell, IL Salem, OR Fairmount, IL

Current Alerts for Fairmount, IL: Wind Advisory

This Afternoon: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 76. Windy, with a south wind 28 to 30 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms before 1am, then a chance of showers between 1am and 4am. Low around 58. Breezy, with a south wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. South wind 7 to 14 mph, with gusts as high as 20 mph.

Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 58. South wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers and possibly a thunderstorm. High near 67. Breezy, with a south southwest wind 16 to 20 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 11 to 15 mph, with gusts as high as 23 mph.

Sunday: Mostly sunny, with a high near 52. West northwest wind 11 to 16 mph, with gusts as high as 22 mph.

Sunday Night: Mostly clear, with a low around 37.

Monday: Sunny, with a high near 56.

Monday Night: Mostly clear, with a low around 31.

Tuesday: Sunny, with a high near 50.

Tuesday Night: Partly cloudy, with a low around 33.

Wednesday: Mostly sunny, with a high near 63.

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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