Forecast Details for Marion, IL

Recent Locations: Marion, IL  
Today: Widespread frost before 9am. Otherwise, sunny, with a high near 63. Light and variable wind becoming west southwest 5 to 10 mph in the morning.
Tonight: Mostly clear, with a low around 43. South southwest wind 6 to 9 mph.
Friday: Mostly sunny, with a high near 70. South southwest wind 8 to 17 mph, with gusts as high as 25 mph.
Friday Night: Mostly cloudy, with a low around 55. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 30 mph.
Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. Southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 56. South southwest wind around 10 mph. Chance of precipitation is 30%.
Sunday: A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. South southwest wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South southwest wind 15 to 18 mph, with gusts as high as 28 mph.
Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. Breezy, with a south southwest wind 18 to 21 mph, with gusts as high as 31 mph.
Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 66. West wind around 18 mph, with gusts as high as 28 mph.
Tuesday Night: Partly cloudy, with a low around 39. North northwest wind 11 to 16 mph, with gusts as high as 24 mph.
Wednesday: Sunny, with a high near 59. Northwest wind 11 to 16 mph, with gusts as high as 25 mph.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

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.

North American Water Vapor Map

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

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

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