Forecast Details for Boston, MA

Recent Locations: Pony, MT College Station, TX Boston, MA

Tonight: Mostly clear, with a low around 64. Northeast wind around 6 mph becoming light and variable.

Saturday: Sunny, with a high near 84. Light and variable wind becoming south 5 to 10 mph in the morning.

Saturday Night: A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind around 10 mph. Chance of precipitation is 20%.

Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night: Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 65. Northwest wind around 6 mph. Chance of precipitation is 60%.

Monday: Sunny, with a high near 79. Northwest wind around 9 mph.

Monday Night: Mostly clear, with a low around 59. North wind around 6 mph.

Tuesday: Sunny, with a high near 78. Northwest wind around 6 mph becoming east in the afternoon.

Tuesday Night: Partly cloudy, with a low around 62. Southeast wind around 6 mph becoming light and variable after midnight.

Wednesday: Mostly sunny, with a high near 83. Light southwest wind becoming south 5 to 9 mph in the morning.

Wednesday Night: Mostly cloudy, with a low around 69. Southwest wind 6 to 9 mph.

Thursday: Partly sunny, with a high near 87. Southwest wind 8 to 11 mph.

Thursday Night: A chance of showers. Mostly cloudy, with a low around 73. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.

Friday: A chance of showers. Mostly sunny, with a high near 88. West wind 7 to 9 mph. Chance of precipitation is 30%.

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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 Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds