Forecast Details for Westborough, MA

Recent Locations: Etna, CA Brentwood, TN Westborough, MA

Tonight: Mostly clear, with a low around 58. West wind 5 to 7 mph.

Tuesday: Sunny, with a high near 78. West wind 9 to 11 mph, with gusts as high as 22 mph.

Tuesday Night: Mostly clear, with a low around 51. West wind 3 to 5 mph.

Wednesday: Mostly sunny, with a high near 75. West wind 5 to 7 mph.

Wednesday Night: Mostly clear, with a low around 52. Light west wind.

Thursday: Mostly sunny, with a high near 77. Southwest wind 3 to 7 mph.

Thursday Night: Partly cloudy, with a low around 57. Southwest wind around 6 mph.

Friday: A chance of showers after 9am. Partly sunny, with a high near 74. Southwest wind 5 to 7 mph. Chance of precipitation is 40%.

Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 52. Light and variable wind. Chance of precipitation is 40%.

Saturday: Mostly sunny, with a high near 73. Northwest wind around 6 mph.

Saturday Night: Mostly clear, with a low around 50. Light northwest wind.

Sunday: Mostly sunny, with a high near 75. Northwest wind 3 to 6 mph.

Sunday Night: Partly cloudy, with a low around 53. Light and variable wind.

Labor Day: Mostly sunny, with a high near 78. Light and variable wind becoming northeast around 6 mph in the morning.

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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