Forecast Details for Phoenix, AZ

Recent Locations: Phoenix, AZ

Today: Sunny, with a high near 91. South southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

Tonight: Mostly clear, with a low around 60. West southwest wind 5 to 10 mph becoming light and variable after midnight.

Saturday: Sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

Saturday Night: Mostly clear, with a low around 57. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Sunday: Sunny, with a high near 78. Light southwest wind becoming west southwest 5 to 10 mph in the afternoon.

Sunday Night: Clear, with a low around 56. West southwest wind around 5 mph becoming calm after midnight.

Monday: Sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.

Monday Night: Clear, with a low around 60. West wind around 5 mph becoming calm in the evening.

Tuesday: Sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.

Tuesday Night: Mostly clear, with a low around 63. West southwest wind around 5 mph becoming calm after midnight.

Wednesday: Sunny, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.

Wednesday Night: Mostly clear, with a low around 65. West southwest wind around 5 mph becoming calm after midnight.

Thursday: Sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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.

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