Forecast Details for Troy, ID

Recent Locations: Jennerstown, PA Luling, TX Troy, ID

Today: A chance of snow before 11am, then rain and snow between 11am and 3pm, then rain after 3pm. Snow level rising to 3400 feet in the afternoon. High near 43. West wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tonight: A chance of rain, mixing with snow after 9pm, then gradually ending. Snow level 3700 feet lowering to 2800 feet after midnight . Cloudy, then gradually becoming partly cloudy, with a low around 32. West wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Friday: Mostly sunny, with a high near 51. Southwest wind 3 to 5 mph.

Friday Night: Mostly clear, with a low around 32. Light and variable wind.

Saturday: Sunny, with a high near 59. Light and variable wind.

Saturday Night: Mostly clear, with a low around 36.

Sunday: Partly sunny, with a high near 64.

Sunday Night: Mostly cloudy, with a low around 40.

Monday: Partly sunny, with a high near 66.

Monday Night: Partly cloudy, with a low around 43.

Tuesday: Mostly sunny, with a high near 61.

Tuesday Night: A 20 percent chance of rain. Snow level 6100 feet lowering to 4800 feet after midnight . Partly cloudy, with a low around 37.

Wednesday: A 20 percent chance of rain. Snow level 4300 feet. Mostly sunny, with a high near 55.

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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