Forecast Details for Boylston, MA

Recent Locations: Boylston, MA  
This Afternoon: Sunny, with a high near 58. Northeast wind 3 to 5 mph.
Tonight: Clear, with a low around 35. Southeast wind around 6 mph becoming southwest after midnight.
Saturday: Increasing clouds, with a high near 64. Light and variable wind becoming southwest around 6 mph in the morning.
Saturday Night: A chance of showers, mainly after midnight. Mostly cloudy, with a low around 42. Southwest wind around 9 mph. Chance of precipitation is 40%.
Sunday: A chance of showers, mainly before 10am. Mostly cloudy, with a high near 65. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Sunday Night: Partly cloudy, with a low around 53. Southwest wind around 10 mph.
Monday: Partly sunny, with a high near 70. North wind around 10 mph.
Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 49. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Tuesday: A chance of showers before 8am. Mostly cloudy, with a high near 65. South wind 8 to 13 mph. Chance of precipitation is 30%.
Tuesday Night: A chance of rain before 10pm, then a chance of showers between 10pm and 4am. Mostly cloudy, with a low around 49. South wind around 11 mph. Chance of precipitation is 40%.
Wednesday: A chance of showers. Partly sunny, with a high near 68. Northwest wind 9 to 11 mph becoming south in the afternoon. Chance of precipitation is 30%.
Wednesday Night: Mostly cloudy, with a low around 49. South wind around 10 mph becoming southwest after midnight.
Thursday: Partly sunny, with a high near 71. West wind 9 to 14 mph.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

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

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