Forecast Details for River Forest, IL

Recent Locations: Phoenix, AZ River Forest, IL

Tonight: Scattered snow showers before 10pm, then scattered flurries with isolated snow showers between 10pm and 2am, then intermittent flurries after 2am. Cloudy, then gradually becoming partly cloudy, with a low around 17. Blustery, with a north northwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

Monday: Intermittent flurries before 8am. Mostly sunny, with a high near 31. Wind chill values as low as 1. Blustery, with a north northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

Monday Night: Mostly cloudy, with a low around 19. Light and variable wind becoming south 5 to 10 mph after midnight.

Tuesday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

Tuesday Night: Mostly cloudy, with a low around 26. West northwest wind around 15 mph, with gusts as high as 25 mph.

Wednesday: Mostly sunny, with a high near 38.

Wednesday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 60%.

Thursday: A chance of snow before noon. Partly sunny, with a high near 36.

Thursday Night: Partly cloudy, with a low around 23.

Friday: Sunny, with a high near 50.

Friday Night: Partly cloudy, with a low around 33.

Saturday: Partly sunny, with a high near 46.

Saturday Night: Mostly cloudy, with a low around 24.

Sunday: Partly sunny, with a high near 35.

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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