Forecast Details for Boston, MA

Recent Locations: Boston, MA  
This Afternoon: Scattered showers, mainly before 2pm. Cloudy, with a high near 46. North wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Tonight: Isolated showers before 1am. Cloudy, with a low around 39. North wind around 5 mph becoming west after midnight. Chance of precipitation is 20%.
Sunday: Partly sunny, with a high near 57. Northwest wind 5 to 7 mph becoming southeast in the afternoon.
Sunday Night: Partly cloudy, with a low around 42. Light west wind.
Monday: A slight chance of showers after 1pm. Mostly sunny, with a high near 61. West wind 5 to 8 mph. Chance of precipitation is 20%.
Monday Night: Mostly clear, with a low around 45. West wind around 6 mph.
Tuesday: Sunny, with a high near 68. Southwest wind 6 to 11 mph.
Tuesday Night: Partly cloudy, with a low around 50. Southwest wind 8 to 10 mph.
Wednesday: Showers likely, mainly between 2pm and 3pm. Partly sunny, with a high near 64. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night: A chance of showers before midnight. Mostly cloudy, with a low around 39. South wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Thursday: Mostly sunny, with a high near 50. Breezy, with a west wind 16 to 20 mph, with gusts as high as 31 mph.
Thursday Night: Partly cloudy, with a low around 39. West wind 11 to 14 mph, with gusts as high as 28 mph.
Friday: Mostly sunny, with a high near 55. West wind 16 to 18 mph.

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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).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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.

North American Water Vapor Map

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

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

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