Forecast Details for Glenarm, IL

Recent Locations: Dundee, OH Plainville, CT Glenarm, IL

This Afternoon: Mostly cloudy, with a high near 62. West southwest wind 3 to 6 mph.

Tonight: A chance of showers, with thunderstorms also possible after 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 52. Light south wind becoming south southeast 5 to 10 mph in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 50%.

Friday: A chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 5pm. Mostly cloudy, with a high near 76. Breezy, with a south wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 40%.

Friday Night: Showers and possibly a thunderstorm after midnight. Low around 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: A 50 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 66. South southwest wind 13 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

Saturday Night: Partly cloudy, with a low around 37. West northwest wind 6 to 10 mph, with gusts as high as 17 mph.

Sunday: Sunny, with a high near 64. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.

Sunday Night: Clear, with a low around 46.

Monday: Sunny, with a high near 75.

Monday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 57.

Tuesday: Showers and thunderstorms. Partly sunny, with a high near 76. Breezy.

Tuesday Night: Showers. Mostly cloudy, with a low around 51. Breezy.

Wednesday: Showers likely. Mostly cloudy, with a high near 62. Breezy.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds