Forecast Details for Boston, MA

Recent Locations: Washington, DC Miami, FL Boston, MA

Current Alerts for Boston, MA: Blizzard Warning Coastal Flood Advisory

Tonight: Snow, mainly after 10pm. The snow could be heavy at times. Areas of blowing snow after 3am. Low around 28. Windy, with a northeast wind 9 to 19 mph increasing to 19 to 29 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.

Monday: Snow. The snow could be heavy at times. Areas of blowing snow before 3pm. High near 30. Windy, with a north wind 25 to 30 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.

Monday Night: Snow likely, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 22. Northwest wind 9 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Tuesday: Mostly sunny, with a high near 32. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

Tuesday Night: Partly cloudy, with a low around 13. West wind 3 to 6 mph.

Wednesday: Snow before 11am, then snow, possibly mixed with rain between 11am and 2pm, then rain likely after 2pm. High near 38. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Wednesday Night: A chance of rain and snow before 7pm, then a chance of snow between 7pm and 8pm. Partly cloudy, with a low around 29. Southwest wind around 6 mph. Chance of precipitation is 30%.

Thursday: A chance of rain after 1pm. Partly sunny, with a high near 39. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 40%.

Thursday Night: Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 30. Southeast wind around 6 mph becoming southwest after midnight. Chance of precipitation is 70%.

Friday: A chance of rain and snow before 8am, then a chance of rain between 8am and noon. Partly sunny, with a high near 42. Southwest wind 6 to 8 mph. Chance of precipitation is 40%.

Friday Night: Mostly clear, with a low around 25. West wind around 6 mph.

Saturday: Mostly sunny, with a high near 42. South wind 5 to 8 mph.

Saturday Night: Partly cloudy, with a low around 32. Southwest wind around 7 mph.

Sunday: Partly sunny, with a high near 43. West wind 6 to 9 mph.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What is Condensation?

Home - Education - Precipitation - 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