Forecast Details for Allison, IA

Recent Locations: Brookings, OR Kinney, MN Allison, IA

Tonight: Scattered showers and thunderstorms between 7pm and 9pm. Partly cloudy, with a low around 31. Northwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday: Mostly sunny, with a high near 44. Breezy, with a north northwest wind 14 to 17 mph, with gusts as high as 23 mph.

Monday Night: Partly cloudy, with a low around 23. North northwest wind 6 to 14 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

Tuesday: A 20 percent chance of snow showers after 1pm. Partly sunny, with a high near 41. East wind 6 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

Tuesday Night: Rain and snow showers likely, becoming all rain after 10pm. Mostly cloudy, with a low around 33. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 65. Windy. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 41. Breezy.

Thursday: A 40 percent chance of showers. Mostly sunny, with a high near 59.

Thursday Night: A 40 percent chance of showers. Partly cloudy, with a low around 35.

Friday: A 40 percent chance of showers. Partly sunny, with a high near 58.

Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 41.

Saturday: A 50 percent chance of showers. Mostly cloudy, with a high near 62.

Saturday Night: Showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

Sunday: Showers likely. Mostly cloudy, with a high near 71. Breezy. Chance of precipitation is 70%.

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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)

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 Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds