Forecast Details for Mattapan, MA

Recent Locations: Welton, IA Brea, CA Mattapan, MA

Overnight: A chance of showers and thunderstorms before 5am, then a slight chance of showers. Patchy fog. Otherwise, cloudy, with a low around 47. Calm wind becoming east around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 59. Light and variable wind.

Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

Friday: A chance of rain before 9am, then a chance of showers between 9am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 74. Light and variable wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: A slight chance of rain before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, with a low around 49. Northeast wind 3 to 5 mph. Chance of precipitation is 20%.

Saturday: Mostly cloudy, with a high near 59. East wind 6 to 8 mph.

Saturday Night: Cloudy, with a low around 48. East wind around 6 mph becoming light and variable in the evening.

Sunday: Showers likely, mainly after 10am. Cloudy, with a high near 59. South wind 6 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

Sunday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 35. West wind around 9 mph. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 49. West wind around 11 mph, with gusts as high as 21 mph.

Monday Night: Partly cloudy, with a low around 32. Northwest wind around 7 mph.

Tuesday: Sunny, with a high near 54. West wind 6 to 9 mph.

Tuesday Night: Partly cloudy, with a low around 40. Southwest wind around 8 mph.

Wednesday: Partly sunny, with a high near 62. Southwest wind 7 to 9 mph.

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle