Forecast Details for Cambridge, MA

Recent Locations: Clearwater, FL Santa Clara, CA Cambridge, MA

Today: Showers likely and possibly a thunderstorm before 2pm, then scattered showers and thunderstorms between 2pm and 3pm, then scattered showers after 3pm. Mostly cloudy, with a temperature rising to near 66 by noon, then falling to around 48 during the remainder of the day. Southwest wind 6 to 16 mph becoming southeast in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Scattered showers and thunderstorms. Patchy fog between 10pm and midnight. Otherwise, mostly cloudy, with a low around 40. East wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 66. Southwest wind 8 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night: Showers likely, mainly before 2am. Cloudy, with a low around 38. Northeast wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Thursday: A chance of showers. Cloudy, with a high near 42. Northeast wind 9 to 11 mph. Chance of precipitation is 40%.

Thursday Night: A chance of showers. Cloudy, with a low around 38. East wind 5 to 7 mph. Chance of precipitation is 40%.

Friday: Cloudy, with a high near 65. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

Friday Night: Mostly cloudy, with a low around 53. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

Saturday: Mostly cloudy, with a high near 68. West wind 6 to 10 mph becoming east in the afternoon.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 45. East wind around 7 mph. Chance of precipitation is 40%.

Sunday: A chance of rain. Mostly cloudy, with a high near 69. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 45. West wind around 9 mph. Chance of precipitation is 50%.

Monday: A chance of rain. Mostly cloudy, with a high near 54. Northwest wind 7 to 9 mph. Chance of precipitation is 30%.

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North America Water Vapor (Moisture)

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Weather Topic: What is Precipitation?

Home - Education - 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

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet