Forecast Details for Geff, IL

Recent Locations: Hebron, NE Upper Jay, NY Geff, IL

This Afternoon: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 73. North wind around 7 mph. Chance of precipitation is 90%.

Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 62. East wind 5 to 11 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%.

Thursday: A chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 14 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.

Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Partly cloudy, with a low around 63. South wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

Friday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Saturday: Showers and possibly a thunderstorm. High near 69. South southwest wind 11 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

Saturday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 39. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.

Sunday: Sunny, with a high near 57. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.

Sunday Night: Clear, with a low around 36. Northwest wind 3 to 7 mph.

Monday: Sunny, with a high near 63. Calm wind becoming west northwest 5 to 7 mph in the morning.

Monday Night: Partly cloudy, with a low around 40. North wind 3 to 6 mph.

Tuesday: Mostly sunny, with a high near 56. North northeast wind 6 to 9 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds