Forecast Details for Boston, MA

Recent Locations: Boston, MA  
Today: Sunny and hot, with a high near 98. Heat index values as high as 101. West wind 5 to 9 mph.
Tonight: Mostly clear, with a low around 71. Northwest wind around 5 mph becoming calm in the evening.
Wednesday: A slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 92. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 6 mph becoming north after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Northeast wind 6 to 8 mph. Chance of precipitation is 50%.
Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Northeast wind around 6 mph. Chance of precipitation is 60%.
Friday: A chance of showers before 5pm. Partly sunny, with a high near 73. Northeast wind 9 to 11 mph. Chance of precipitation is 50%.
Friday Night: Partly cloudy, with a low around 59. North wind around 6 mph.
Saturday: Sunny, with a high near 78. North wind around 7 mph becoming northeast in the afternoon.
Saturday Night: Clear, with a low around 59. Light and variable wind.
Sunday: Sunny, with a high near 84. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Sunday Night: Mostly clear, with a low around 63. Southwest wind around 7 mph.
Monday: Sunny, with a high near 85. Southwest wind 5 to 7 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)

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North American Water Vapor Map

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Precipitation Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

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