Forecast Details for Walnut, IA

Recent Locations: Trinity, TX Allen, OK Walnut, IA

Current Alerts for Walnut, IA: Winter Weather Advisory

Overnight: Snow showers. The snow could be heavy at times. Low around 26. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.

Tuesday: Snow showers before 3pm, then a chance of rain and snow showers between 3pm and 4pm, then a slight chance of rain showers after 4pm. High near 36. Breezy, with an east southeast wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Tuesday Night: A 40 percent chance of showers, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 44 by 5am. Breezy, with a southeast wind 16 to 22 mph, with gusts as high as 31 mph. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A 40 percent chance of showers after 7am. Mostly sunny, with a high near 65. Windy, with a south wind 18 to 28 mph becoming west in the afternoon. Winds could gust as high as 34 mph. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 37. West northwest wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 58. East wind 6 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 38. Northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%.

Friday: A slight chance of showers. Mostly cloudy, with a high near 58. Northeast wind around 11 mph, with gusts as high as 16 mph.

Friday Night: A chance of showers. Mostly cloudy, with a low around 43. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.

Saturday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. Breezy, with an east southeast wind 11 to 20 mph, with gusts as high as 25 mph.

Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 56. Breezy, with a south southeast wind 16 to 18 mph, with gusts as high as 25 mph.

Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Breezy, with a south wind 18 to 24 mph, with gusts as high as 32 mph.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Breezy, with a south wind 16 to 18 mph, with gusts as high as 25 mph.

Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 76. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 25 mph.

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

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

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