Forecast Details for Evanston, IL

Recent Locations: Evanston, IL  
Overnight: Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Cloudy, with a low around 58. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 60. North northwest wind 5 to 15 mph becoming northeast in the afternoon.
Friday Night: Mostly clear, with a low around 49. North northeast wind 5 to 10 mph.
Saturday: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 65. East wind 5 to 10 mph.
Saturday Night: Showers and thunderstorms likely before 4am, then a slight chance of showers. Mostly cloudy, with a low around 51. East southeast wind 5 to 10 mph becoming northwest in the evening. Chance of precipitation is 60%.
Sunday: Mostly sunny, with a high near 57.
Sunday Night: Partly cloudy, with a low around 48.
Monday: Mostly sunny, with a high near 60.
Monday Night: A chance of showers after 1am. Mostly cloudy, with a low around 55.
Tuesday: Showers and possibly a thunderstorm. Partly sunny, with a high near 75.
Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Wednesday: A chance of showers. Mostly sunny, with a high near 77.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 55.
Thursday: Mostly sunny, with a high near 72.

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Current U.S. National Radar--Current

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Current U.S. National Radar

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Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

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