Forecast Details for Sullivan, IL

Recent Locations: Readlyn, IA Berwyn, IL Sullivan, IL

Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 62. South wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers and possibly a thunderstorm before 2pm, then a slight chance of showers between 2pm and 4pm. Temperature falling to around 54 by 2pm. South southwest wind 14 to 16 mph becoming west in the morning. Winds could gust as high as 29 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 36. West northwest wind 11 to 15 mph, with gusts as high as 28 mph.

Sunday: Mostly sunny, with a high near 52. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.

Sunday Night: Mostly clear, with a low around 37. West wind 6 to 9 mph, with gusts as high as 15 mph.

Monday: Sunny, with a high near 55. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.

Monday Night: Partly cloudy, with a low around 29. North northeast wind around 11 mph, with gusts as high as 17 mph.

Tuesday: Mostly sunny, with a high near 49.

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

Wednesday: Partly sunny, with a high near 67.

Wednesday Night: Partly cloudy, with a low around 50.

Thursday: Mostly sunny, with a high near 71.

Thursday Night: Partly cloudy, with a low around 51.

Friday: Partly sunny, with a high near 74.

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North America Water Vapor (Moisture)

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Weather Topic: What is Freezing Rain?

Home - Education - Precipitation - Freezing Rain

Next Topic: Graupel

Freezing rain is a condition where precipitation which has fallen in the form of water droplets reaches temperatures which are below freezing and freezes upon coming into contact with surface objects. The result of this precipitation is a glaze of ice which can be damaging to plants and man-made structures. A severe onset of freezing rain which results in a very thick glaze of ice is known as an ice storm.

Next Topic: Graupel

Weather Topic: What is Hail?

Home - Education - Precipitation - Hail

Hail Next Topic: Hole Punch Clouds

Hail is a form of precipitation which is recognized by large solid balls or clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind. As the hailstones remain in the updraft, ice is deposited onto them until their weight becomes heavy enough for them to fall to the earth's surface.

Hail storms can cause significant damage to crops, aircrafts, and man-made structures, despite the fact that the duration is usually less than ten minutes.

Next Topic: Hole Punch Clouds