Forecast Details for Treynor, IA

Recent Locations: Branson, CO Saugatuck, MI Treynor, IA

Tonight: Partly cloudy, with a low around 34. Breezy, with a north northwest wind 17 to 22 mph, with gusts as high as 30 mph.

Saturday: Increasing clouds, with a high near 56. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

Saturday Night: Mostly clear, with a low around 33. Northwest wind 11 to 16 mph becoming west northwest 5 to 10 mph after midnight. Winds could gust as high as 24 mph.

Sunday: Sunny, with a high near 64. West southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 16 mph.

Sunday Night: Mostly clear, with a low around 38. North northeast wind 8 to 11 mph becoming east southeast after midnight. Winds could gust as high as 16 mph.

Monday: Sunny, with a high near 73. South southeast wind 13 to 17 mph, with gusts as high as 24 mph.

Monday Night: Partly cloudy, with a low around 53. South wind 13 to 15 mph, with gusts as high as 23 mph.

Tuesday: Sunny, with a high near 80. South southwest wind 10 to 13 mph, with gusts as high as 18 mph.

Tuesday Night: Mostly clear, with a low around 53. Southeast wind around 11 mph, with gusts as high as 17 mph.

Wednesday: Mostly sunny, with a high near 81. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph.

Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Breezy, with a south wind around 20 mph, with gusts as high as 26 mph.

Thursday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Breezy, with a south wind 18 to 23 mph, with gusts as high as 31 mph.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Breezy, with a south wind 15 to 18 mph, with gusts as high as 24 mph.

Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 66. Breezy, with a south southwest wind 15 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

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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