Forecast Details for Patterson, IA

Recent Locations: Weiser, ID Pepin, WI Patterson, IA

Today: A chance of snow showers before 1pm, then a chance of rain and snow showers between 1pm and 2pm, then a chance of rain showers after 2pm. Cloudy, with a high near 42. Southeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. Total daytime snow accumulation of less than one inch possible.

Tonight: A 30 percent chance of showers between 1am and 4am. Mostly cloudy, with a temperature rising to around 45 by 5am. Breezy, with a southeast wind 14 to 18 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 69. Windy, with a south southwest wind 20 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Showers and thunderstorms likely. Cloudy, then gradually becoming partly cloudy, with a low around 43. West southwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 62. North northwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and possibly a thunderstorm. Low around 43. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Friday: A 20 percent chance of showers. Mostly cloudy, with a high near 60.

Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 45.

Saturday: Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

Saturday Night: Showers likely. Cloudy, with a low around 57. Chance of precipitation is 60%.

Sunday: Showers likely. Mostly cloudy, with a high near 72. Windy. Chance of precipitation is 70%.

Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Breezy. Chance of precipitation is 60%.

Monday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 78. Breezy.

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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 Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds