Forecast Details for Decatur, IL

Recent Locations: Georgetown, KY Java, VA Decatur, IL

Current Alerts for Decatur, IL: Wind Advisory

Overnight: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Cloudy, with a temperature rising to around 54 by 5am. East wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Cloudy, with a high near 74. Breezy, with a south wind 17 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Breezy, with a south wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 50%.

Friday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South wind 7 to 15 mph, with gusts as high as 23 mph.

Friday Night: Showers and possibly a thunderstorm. Low around 55. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 63. South southwest wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: Mostly cloudy, with a low around 37. West northwest wind 15 to 17 mph, with gusts as high as 24 mph.

Sunday: Mostly sunny, with a high near 53.

Sunday Night: Mostly clear, with a low around 35.

Monday: Sunny, with a high near 59.

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

Tuesday: Mostly sunny, with a high near 53.

Tuesday Night: Partly cloudy, with a low around 34.

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 are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation