Forecast Details for Lansing, IA

Recent Locations: Van Meter, IA Oracle, AZ Lansing, IA

Today: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 57. Calm wind becoming south around 6 mph.

Tonight: Mostly clear, with a low around 31. Light and variable wind.

Sunday: Sunny, with a high near 54. Calm wind.

Sunday Night: Partly cloudy, with a low around 37. Calm wind becoming south around 6 mph after midnight.

Washington's Birthday: Mostly sunny, with a high near 59. Southwest wind 3 to 6 mph.

Monday Night: Partly cloudy, with a low around 39. Calm wind becoming east around 5 mph after midnight.

Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 55. East wind 5 to 11 mph, with gusts as high as 23 mph.

Tuesday Night: Rain likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 41. East wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%.

Wednesday: A 40 percent chance of rain. Partly sunny, with a high near 52. Southwest wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

Wednesday Night: A 20 percent chance of snow. Partly cloudy, with a low around 28. West wind around 7 mph becoming north after midnight.

Thursday: A chance of rain and snow. Partly sunny, with a high near 42. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.

Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 25. Northeast wind 6 to 8 mph. Chance of precipitation is 50%.

Friday: A 30 percent chance of snow. Partly sunny, with a high near 36. Northwest wind around 7 mph.

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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 Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle