Forecast Details for Pittsburgh, PA

Recent Locations: San Francisco, CA Bakersfield, CA Pittsburgh, PA

Tonight: Mostly cloudy, with a low around 50. South wind 6 to 8 mph.

Monday: Scattered showers before 11am, then isolated showers after 5pm. Mostly cloudy, with a high near 66. Southwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

Monday Night: Scattered showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 2am, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 59. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday: Rain likely and possibly a thunderstorm before 8am, then a chance of rain between 8am and 2pm. Mostly cloudy, with a high near 77. Southwest wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: A slight chance of thunderstorms, then a chance of rain and thunderstorms after 8pm. Mostly cloudy, with a low around 60. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday: Rain, with thunderstorms also possible after 2pm. High near 72. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Rain likely and possibly a thunderstorm before 2am, then a chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

Thursday: Rain likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

Friday: Rain likely, mainly after 8am. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

Friday Night: A chance of rain. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.

Saturday: Rain likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

Saturday Night: Rain likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

Sunday: Rain likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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).

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 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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle