Forecast Details for Altona, IL

Recent Locations: Wesson, MS Tekoa, WA Altona, IL

Current Alerts for Altona, IL: Flood Warning

Today: Mostly sunny, with a high near 72. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 33 mph.

Tonight: A chance of showers and thunderstorms. Increasing clouds, with a low around 51. South southwest wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.

Thursday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 71. West southwest wind around 6 mph becoming northwest in the morning. Chance of precipitation is 10%.

Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 7pm. Low around 48. Light and variable wind becoming north northeast 5 to 8 mph in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Friday: A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. North wind 8 to 10 mph, with gusts as high as 17 mph.

Friday Night: Partly cloudy, with a low around 41. East wind around 6 mph.

Saturday: Partly sunny, with a high near 65. East wind 6 to 11 mph, with gusts as high as 17 mph.

Saturday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 55.

Sunday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 77. Breezy.

Sunday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 63. Breezy. Chance of precipitation is 60%.

Monday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Breezy.

Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58.

Tuesday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 71.

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

Current U.S. National Radar--Current

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National Weather Forecast--Current

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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 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

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails