Forecast Details for Boston, MA

Recent Locations: Boston, MA

Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 67. East wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers and thunderstorms, mainly before 2pm, then a slight chance of thunderstorms after 5pm. Patchy fog. High near 73. East wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night: A slight chance of showers between 8pm and 3am. Patchy fog. Otherwise, cloudy, with a low around 66. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.

Friday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening.

Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming east 5 to 7 mph in the morning.

Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 66. Southeast wind around 6 mph becoming calm in the evening.

Sunday: Partly sunny, with a high near 83. Southeast wind 3 to 8 mph.

Sunday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 68. South wind 3 to 6 mph.

Monday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Southwest wind 5 to 8 mph.

Monday Night: Partly cloudy, with a low around 71. Southwest wind 3 to 6 mph.

Tuesday: Mostly sunny, with a high near 89. West wind around 6 mph becoming south in the afternoon.

Tuesday Night: Mostly cloudy, with a low around 72. South wind 3 to 6 mph.

Wednesday: Partly sunny and hot, with a high near 90. Light and variable wind becoming southeast 5 to 7 mph in the morning.

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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

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 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

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog