Forecast Details for Fountain Hills, AZ

Recent Locations: Coosada, AL Highland, OH Fountain Hills, AZ

This Afternoon: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 100. West southwest wind around 5 mph.

Tonight: Showers and thunderstorms likely, mainly before 7pm. Patchy blowing dust before 7pm. Mostly cloudy, with a low around 79. Breezy, with a south wind 10 to 15 mph becoming north 5 to 10 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: A 30 percent chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 101. North northeast wind 5 to 10 mph becoming south southwest in the morning.

Saturday Night: A 10 percent chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 79. West wind 5 to 10 mph becoming light and variable after midnight.

Sunday: Sunny, with a high near 102. Calm wind becoming west southwest around 5 mph in the afternoon.

Sunday Night: Mostly clear, with a low around 78. West wind around 5 mph becoming calm.

Monday: Sunny, with a high near 105. Calm wind becoming west around 5 mph in the afternoon.

Monday Night: Partly cloudy, with a low around 80. West wind around 5 mph becoming calm in the evening.

Tuesday: Sunny, with a high near 107. Calm wind becoming west southwest around 5 mph in the afternoon.

Tuesday Night: Partly cloudy, with a low around 83. West southwest wind around 5 mph becoming calm in the evening.

Wednesday: Sunny, with a high near 109. Calm wind becoming west southwest around 5 mph in the afternoon.

Wednesday Night: A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 86. Southwest wind around 5 mph becoming northeast after midnight.

Thursday: A 10 percent chance of showers and thunderstorms. Sunny and hot, with a high near 111. Calm wind becoming southwest around 5 mph in the afternoon.

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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 Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds