Forecast Details for Tarentum, PA

Recent Locations: Tarentum, PA

Today: Sunny, with a high near 82. Calm wind becoming west 5 to 7 mph in the morning.

Tonight: Mostly clear, with a low around 56. Northeast wind around 5 mph becoming calm in the evening.

Friday: A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 87. South wind 5 to 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 59. North wind around 9 mph becoming southeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 70. Southeast wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

Sunday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

Monday: A chance of showers after 8am. Partly sunny, with a high near 76. Chance of precipitation is 40%.

Monday Night: A chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 30%.

Tuesday: A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 50%.

Tuesday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

Wednesday: Showers and thunderstorms likely. Partly sunny, with a high near 83. Breezy. Chance of precipitation is 60%.

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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 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