Forecast Details for Boston, MA

Recent Locations: Frankfurt Airport, 05 Boston, MA

Overnight: Areas of dense fog. Otherwise, cloudy, with a low around 39. Light south wind.

Monday: A slight chance of showers after 2pm. Areas of fog before noon. Otherwise, cloudy, with a high near 66. South wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Monday Night: Showers and possibly a thunderstorm before 3am, then showers likely. Some of the storms could produce heavy rainfall. Low around 43. South wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Tuesday: A chance of showers, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 52. Northwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday Night: Mostly clear, with a low around 30. Northwest wind 7 to 9 mph.

Wednesday: Mostly sunny, with a high near 45. North wind around 7 mph becoming east in the afternoon.

Wednesday Night: Showers likely, mainly after 5am. Cloudy, with a low around 37. Southeast wind around 8 mph. Chance of precipitation is 60%.

Thursday: Showers likely, mainly before 9am. Cloudy, with a high near 65. Southwest wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

Thursday Night: A chance of showers. Cloudy, with a low around 56. Southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

Friday: A chance of showers before 1pm. Mostly cloudy, with a high near 66. West wind 6 to 8 mph. Chance of precipitation is 40%.

Friday Night: Mostly cloudy, with a low around 42. North wind around 6 mph.

Saturday: Mostly cloudy, with a high near 51. North wind 6 to 8 mph becoming east in the afternoon.

Saturday Night: A chance of rain. Cloudy, with a low around 40. Southeast wind around 6 mph. Chance of precipitation is 50%.

Sunday: Rain likely. Mostly cloudy, with a high near 52. East wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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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