Forecast Details for Santa Clara, CA

Recent Locations: Santa Clara, CA  
Today: Partly sunny, with a high near 59. Southeast wind 5 to 7 mph becoming calm in the afternoon.
Tonight: Rain. Patchy fog before 9pm. Steady temperature around 54. South southeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday: Rain likely, mainly before 9am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 64. Light and variable wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night: A 30 percent chance of rain after 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 51. Light and variable wind.
Saturday: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 65. Calm wind.
Saturday Night: A 20 percent chance of rain after 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 50. New precipitation amounts of less than a tenth of an inch possible.
Sunday: Rain. High near 61. Chance of precipitation is 80%.
Sunday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 39.
Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 58.
Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 36.
Tuesday: Patchy fog. Patchy frost. Otherwise, mostly sunny, with a high near 58.
Tuesday Night: Partly cloudy, with a low around 39.
New Year's Day: Partly sunny, with a high near 62.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What is Precipitation?

Home - Education - Precipitation - 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