Forecast Details for Plymouth, IA

Recent Locations: Plymouth, IA

Overnight: Mostly cloudy, with a low around 33. North northeast wind 10 to 14 mph, with gusts as high as 21 mph.

Wednesday: A 30 percent chance of showers, mainly after 4pm. Increasing clouds, with a high near 47. Breezy, with an east wind 10 to 16 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: Rain showers before 1am, then rain showers, possibly mixed with sleet between 1am and 2am, then rain showers after 2am. Low around 34. Breezy, with an east wind 18 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.

Thursday: Showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. High near 53. Breezy, with an east wind 14 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday Night: Rain showers likely before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 29. Blustery, with a west northwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday: A chance of rain and thunderstorms before 10am, then a chance of rain between 10am and 1pm, then rain and possibly a thunderstorm after 1pm. High near 48. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Low around 31. Blustery. Chance of precipitation is 80%.

Saturday: A chance of rain and snow showers. Mostly cloudy, with a high near 40. Windy. Chance of precipitation is 40%.

Saturday Night: Mostly cloudy, with a low around 26. Windy.

Sunday: Sunny, with a high near 47. Breezy.

Sunday Night: Partly cloudy, with a low around 29.

Monday: Mostly sunny, with a high near 57. Breezy.

Monday Night: Partly cloudy, with a low around 33.

Tuesday: Mostly sunny, with a high near 55. Breezy.

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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