Forecast Details for Boston, MA

Recent Locations: Boston, MA  
Today: Rain. Patchy fog. High near 49. North wind 3 to 5 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight: Rain. Patchy fog before midnight. Low around 36. Northwest wind 6 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Friday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 49. Northwest wind 14 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night: Partly cloudy, with a low around 36. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 33 mph.
Saturday: Sunny, with a high near 52. West wind around 18 mph, with gusts as high as 29 mph.
Saturday Night: Partly cloudy, with a low around 36. West wind 10 to 14 mph.
Sunday: Mostly sunny, with a high near 54. West wind 10 to 15 mph.
Sunday Night: Partly cloudy, with a low around 35. Northwest wind 10 to 15 mph.
Monday: Mostly sunny, with a high near 54. North wind 9 to 11 mph.
Monday Night: Mostly cloudy, with a low around 38. Southeast wind 8 to 10 mph becoming north after midnight.
Tuesday: Rain likely. Mostly cloudy, with a high near 48. East wind 9 to 14 mph. Chance of precipitation is 60%.
Tuesday Night: Rain likely. Mostly cloudy, with a low around 37. Northeast wind around 15 mph. Chance of precipitation is 60%.
Wednesday: A chance of rain. Mostly cloudy, with a high near 46. Northeast wind 15 to 17 mph. Chance of precipitation is 50%.

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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

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds