Forecast Details for Walnut, IA

Recent Locations: Isle, MN Berry, AL Walnut, IA

Today: Partly sunny, with a temperature falling to around 51 by 5pm. Windy, with a southwest wind 20 to 25 mph becoming north northwest in the afternoon. Winds could gust as high as 32 mph.

Tonight: Partly cloudy, with a low around 33. Breezy, with a north northwest wind 17 to 22 mph, with gusts as high as 29 mph.

Saturday: Sunny, with a high near 54. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph.

Saturday Night: Mostly clear, with a low around 31. West northwest wind 12 to 17 mph becoming light. Winds could gust as high as 25 mph.

Sunday: Sunny, with a high near 64. West wind 5 to 10 mph.

Sunday Night: Mostly clear, with a low around 36. North northeast wind 7 to 11 mph becoming east in the evening. Winds could gust as high as 17 mph.

Monday: Sunny, with a high near 71. Breezy, with a south southeast wind 13 to 18 mph, with gusts as high as 25 mph.

Monday Night: Partly cloudy, with a low around 52. South wind around 16 mph, with gusts as high as 24 mph.

Tuesday: Sunny, with a high near 79. Southwest wind 13 to 16 mph, with gusts as high as 21 mph.

Tuesday Night: Mostly clear, with a low around 51. South wind around 11 mph, with gusts as high as 17 mph.

Wednesday: Sunny, with a high near 80. Breezy, with a south wind 9 to 18 mph, with gusts as high as 26 mph.

Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 58. Breezy, with a south southeast wind around 18 mph, with gusts as high as 24 mph.

Thursday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Breezy, with a south wind 16 to 23 mph, with gusts as high as 30 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 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