Forecast Details for Boston, MA

Recent Locations: Boston, MA  
Tonight: Partly cloudy, with a low around 58. East wind 6 to 8 mph becoming southwest after midnight.
Monday: Partly sunny, with a high near 84. South wind 6 to 13 mph.
Monday Night: Mostly clear, with a low around 67. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Tuesday: Mostly sunny, with a high near 94. South wind 7 to 9 mph.
Tuesday Night: Partly cloudy, with a low around 70. Southwest wind 8 to 11 mph.
Juneteenth: Sunny and hot, with a high near 97. Southwest wind 6 to 9 mph.
Wednesday Night: Partly cloudy, with a low around 73. Southwest wind 7 to 10 mph.
Thursday: Mostly sunny and hot, with a high near 100. Southwest wind 6 to 8 mph.
Thursday Night: Partly cloudy, with a low around 75. Southwest wind 6 to 8 mph.
Friday: A chance of showers after 3pm. Mostly sunny, with a high near 96. West wind 6 to 8 mph becoming south in the afternoon. Chance of precipitation is 30%.
Friday Night: A chance of showers. Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Saturday: A chance of showers. Partly sunny, with a high near 85. East wind 6 to 9 mph. Chance of precipitation is 40%.
Saturday Night: A chance of showers. Mostly cloudy, with a low around 66. South wind around 6 mph. Chance of precipitation is 50%.
Sunday: A chance of showers. Partly sunny, with a high near 84. South wind 6 to 10 mph. Chance of precipitation is 30%.

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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

The Current National Weather Forecast and National Weather Map are shown below.

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 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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

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