Forecast Details for Wellesley, MA

Recent Locations: Marion, AR Conway, SC Wellesley, MA

Today: Rain before 1pm, then a slight chance of rain after 2pm. Patchy fog before 1pm. High near 41. Northeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Tonight: A chance of showers, mainly after 4am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 37. East wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 30%.

Friday: A chance of showers before 8am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 66. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Friday Night: Partly cloudy, with a low around 48. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

Saturday: Partly sunny, with a high near 62. North wind 6 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 40. East wind 5 to 7 mph. Chance of precipitation is 40%.

Sunday: Showers. High near 63. Southwest wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

Sunday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 38. West wind around 8 mph. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 54. West wind around 10 mph, with gusts as high as 21 mph.

Monday Night: Partly cloudy, with a low around 34. West wind 5 to 7 mph.

Tuesday: A chance of showers. Mostly sunny, with a high near 50. West wind 6 to 9 mph. Chance of precipitation is 30%.

Tuesday Night: A chance of showers. Partly cloudy, with a low around 28. North wind around 7 mph. Chance of precipitation is 30%.

Wednesday: Sunny, with a high near 46. North wind around 7 mph becoming east in the afternoon.

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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