Forecast Details for Ketchum, ID

Recent Locations: Ketchum, ID

Tonight: Mostly cloudy, with a low around 36. South southwest wind 6 to 9 mph becoming north after midnight.

Thursday: Mostly sunny, with a high near 62. North northwest wind 7 to 13 mph becoming west in the afternoon.

Thursday Night: A 20 percent chance of rain after midnight. Snow level 8300 feet lowering to 7100 feet after midnight . Mostly cloudy, with a low around 35. North northwest wind 6 to 11 mph.

Friday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Snow level 7200 feet. Mostly cloudy, with a high near 53. Northwest wind 6 to 10 mph. Chance of precipitation is 70%.

Friday Night: A chance of rain showers before midnight, then a chance of rain between midnight and 3am, then a chance of rain and snow after 3am. Some thunder is also possible. Snow level 7400 feet lowering to 6600 feet after midnight . Mostly cloudy, with a low around 34. North northwest wind 8 to 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Saturday: A chance of rain and snow before noon, then a chance of rain. Snow level 6300 feet rising to 7600 feet in the afternoon. Mostly cloudy, with a high near 54. Chance of precipitation is 40%. Little or no snow accumulation expected.

Saturday Night: Partly cloudy, with a low around 31.

Sunday: Mostly sunny, with a high near 56.

Sunday Night: Mostly cloudy, with a low around 32.

Monday: A 20 percent chance of rain. Snow level 7100 feet. Partly sunny, with a high near 55.

Monday Night: Partly cloudy, with a low around 31.

Tuesday: Mostly sunny, with a high near 59.

Tuesday Night: Partly cloudy, with a low around 35.

Wednesday: Mostly sunny, with a high near 64.

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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 is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

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