Forecast Details for Boston, MA

Recent Locations: Boston, MA

Overnight: A chance of showers. Areas of dense fog. Otherwise, cloudy, with a low around 39. South wind around 5 mph. Chance of precipitation is 30%.

Monday: A slight chance of showers after 2pm. Areas of fog before noon. Otherwise, cloudy, with a high near 66. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust 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 11 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Tuesday: A chance of showers before 9am, then a slight chance of rain between 9am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 52. Northwest wind 13 to 15 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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North America Water Vapor (Moisture)

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Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds