Forecast Details for Gerlaw, IL

Recent Locations: Luke, MD Andover, KS Gerlaw, IL

Today: A 40 percent chance of showers, mainly after 2pm. Cloudy, with a steady temperature around 43. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.

Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Temperature rising to around 53 by 5am. Southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 73. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 47. Breezy, with a southwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

Friday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 60%.

Friday Night: Showers and possibly a thunderstorm. Low around 46. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: A 50 percent chance of showers. Mostly cloudy, with a high near 55.

Saturday Night: Mostly cloudy, with a low around 33.

Sunday: Mostly sunny, with a high near 53. Breezy.

Sunday Night: Mostly clear, with a low around 33.

Monday: Mostly sunny, with a high near 61.

Monday Night: Partly cloudy, with a low around 35.

Tuesday: Mostly sunny, with a high near 55.

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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 Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds