Forecast Details for Rockford, IL

Recent Locations: Hollywood, FL Irving, TX Rockford, IL

Current Alerts for Rockford, IL: Winter Storm Watch

Tonight: A 20 percent chance of showers after 11pm. Cloudy, with a low around 34. East southeast wind around 15 mph, with gusts as high as 25 mph.

Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. High near 56. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night: Rain showers, snow, and sleet before 10pm, then snow, possibly mixed with sleet between 10pm and 11pm, then snow after 11pm. Widespread blowing snow, mainly after 4am. Low around 18. Windy, with a north northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.

Monday: Snow likely, mainly before 1pm. Widespread blowing snow, mainly before noon. Cloudy, with a high near 22. Wind chill values as low as -2. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Monday Night: Mostly cloudy, with a low around 4. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

Tuesday: Mostly sunny, with a high near 23.

Tuesday Night: Snow showers. Low around 18. Chance of precipitation is 80%.

Wednesday: Mostly sunny, with a high near 42.

Wednesday Night: Mostly cloudy, with a low around 29.

Thursday: Mostly sunny, with a high near 53.

Thursday Night: Mostly cloudy, with a low around 35.

Friday: Partly sunny, with a high near 57.

Friday Night: Mostly cloudy, with a low around 37.

Saturday: Partly 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 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

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain