Forecast Details for Lockport, IL

Recent Locations: Amidon, ND Votaw, TX Lockport, IL

Current Alerts for Lockport, IL: Air Quality Alert Heat Advisory

Today: Scattered showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 92. Heat index values as high as 100. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Tonight: Scattered showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. West southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Thursday: A 20 percent chance of showers. Mostly cloudy, with a high near 76. West northwest wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

Thursday Night: Mostly cloudy, with a low around 60. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Friday: Mostly sunny, with a high near 82. North northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph.

Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66.

Saturday: Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 83.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 85.

Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

Tuesday: Mostly sunny, with a high near 92.

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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 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

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