Forecast Details for Fountain Hills, AZ

Recent Locations: Holtsville, NY Blytheville, AR Fountain Hills, AZ

Tonight: Mostly clear, with a low around 83. Breezy, with a southwest wind 10 to 15 mph becoming light south southwest after midnight. Winds could gust as high as 20 mph.

Monday: Sunny, with a high near 109. Light and variable wind becoming west 5 to 10 mph in the afternoon.

Monday Night: A 10 percent chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 83. West wind 5 to 10 mph becoming light and variable after midnight.

Tuesday: Sunny and hot, with a high near 110. Calm wind becoming west southwest around 5 mph in the afternoon.

Tuesday Night: A 10 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 83. West wind around 5 mph becoming calm in the evening.

Wednesday: A 10 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 108. Calm wind becoming west southwest around 5 mph in the afternoon.

Wednesday Night: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 81. North wind around 5 mph becoming calm in the evening.

Thursday: A 30 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 107. Calm wind becoming west southwest around 5 mph in the afternoon.

Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Northwest wind around 5 mph becoming calm in the evening.

Friday: A 40 percent chance of showers and thunderstorms, mainly after 11am. Partly sunny, with a high near 103. Calm wind becoming southwest around 5 mph in the afternoon.

Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78. West wind around 5 mph becoming calm in the evening.

Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 101. Calm wind becoming southwest around 5 mph in the afternoon.

Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. West southwest wind around 5 mph becoming calm in the evening.

Sunday: Sunny, with a high near 104. Calm wind becoming west southwest around 5 mph in the afternoon.

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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