Forecast Details for Worcester, MA

Recent Locations: Worcester, MA

Today: Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 78. South wind 3 to 6 mph.

Tonight: A slight chance of showers after 9pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 61. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.

Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 76. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 56. West wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: A chance of showers, mainly after 4pm. Mostly sunny, with a high near 71. West wind 9 to 14 mph. Chance of precipitation is 30%.

Sunday Night: A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 51. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

Monday: Mostly sunny, with a high near 66. Northwest wind around 15 mph, with gusts as high as 28 mph.

Monday Night: Partly cloudy, with a low around 46. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

Tuesday: Partly sunny, with a high near 63. North wind around 10 mph.

Tuesday Night: Mostly cloudy, with a low around 46. Northeast wind 3 to 5 mph.

Wednesday: A chance of showers. Mostly cloudy, with a high near 61. East wind 6 to 8 mph. Chance of precipitation is 30%.

Wednesday Night: A chance of showers. Mostly cloudy, with a low around 45. Northeast wind around 7 mph. Chance of precipitation is 50%.

Thursday: Showers likely. Mostly cloudy, with a high near 57. Northeast wind 9 to 11 mph, with gusts as high as 22 mph. 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