Forecast Details for Granite City, IL

Recent Locations: Green Valley, AZ Darien, IL Granite City, IL

This Afternoon: Sunny, with a high near 84. South wind around 17 mph, with gusts as high as 28 mph.

Tonight: Partly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 24 mph.

Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 86. South wind 11 to 18 mph, with gusts as high as 29 mph.

Tuesday Night: A chance of showers and thunderstorms before 1am, then showers likely between 1am and 2am, then rain likely after 2am. Mostly cloudy, with a low around 61. South wind 6 to 10 mph. Chance of precipitation is 70%.

Wednesday: Rain, with thunderstorms also possible after 1pm. High near 75. East wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 80%.

Wednesday Night: A chance of rain and thunderstorms before 1am, then rain likely between 1am and 4am, then rain likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

Thursday: Rain and possibly a thunderstorm. High near 80. Breezy. Chance of precipitation is 80%.

Thursday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 60. Chance of precipitation is 80%.

Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

Saturday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.

Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 42.

Sunday: A 20 percent chance of rain. Mostly sunny, with a high near 60.

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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 is Hail?

Home - Education - Precipitation - Hail

Hail Next Topic: Hole Punch Clouds

Hail is a form of precipitation which is recognized by large solid balls or clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind. As the hailstones remain in the updraft, ice is deposited onto them until their weight becomes heavy enough for them to fall to the earth's surface.

Hail storms can cause significant damage to crops, aircrafts, and man-made structures, despite the fact that the duration is usually less than ten minutes.

Next Topic: Hole Punch Clouds

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds