Forecast Details for Naperville, IL

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Current Alerts for Naperville, IL: Special Weather Statement

Tonight: A slight chance of snow between 1am and 2am, then snow and freezing rain likely. Cloudy, with a low around 28. West southwest wind 5 to 10 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Total nighttime snow accumulation of less than a half inch possible.

Friday: Drizzle, snow, and freezing rain likely before 9am, then a slight chance of snow showers after 3pm. Cloudy, with a high near 38. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.

Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Wind chill values as low as -2. North wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday: Increasing clouds, with a high near 24. Wind chill values as low as -1. North wind around 5 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph.

Saturday Night: Mostly cloudy, with a low around 18. South southeast wind around 5 mph, with gusts as high as 15 mph.

Sunday: Mostly cloudy, with a high near 33.

Sunday Night: Mostly cloudy, with a low around 21.

Monday: Partly sunny, with a high near 42.

Monday Night: Partly cloudy, with a low around 30.

Tuesday: Mostly sunny, with a high near 51.

Tuesday Night: A chance of rain. Mostly cloudy, with a low around 35.

Wednesday: A chance of rain. Cloudy, with a high near 43.

Wednesday Night: A chance of rain. Cloudy, with a low around 29.

Thursday: A chance of rain and snow. Mostly cloudy, with a high near 39.

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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