Forecast Details for Salem, IL

Recent Locations: Amherst Junction, WI Belview, MN Salem, IL

Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a temperature rising to around 64 by 5am. East wind 8 to 13 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

Thursday: A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 77. Breezy, with a south wind 16 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

Thursday Night: Showers and thunderstorms likely before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 64. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%.

Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. South wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 58. South wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 66. Chance of precipitation is 80%.

Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 39.

Sunday: Sunny, with a high near 57.

Sunday Night: Clear, with a low around 36.

Monday: Sunny, with a high near 63.

Monday Night: Partly cloudy, with a low around 39.

Tuesday: Mostly sunny, with a high near 57.

Tuesday Night: Partly cloudy, with a low around 36.

Wednesday: Mostly sunny, with a high near 65.

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North America Water Vapor (Moisture)

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Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog