Forecast Details for Westford, MA

Recent Locations: Tonkawa, OK Pittsburg, TX Westford, MA

Overnight: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 51. Southwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday: Showers, with thunderstorms also possible after 2pm. Patchy fog between 7am and 11am. High near 57. Southwest wind 5 to 8 mph becoming northeast in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 49. East wind around 6 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 67. Southwest wind around 8 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night: Showers likely, mainly before 2am. Cloudy, with a low around 36. Northeast wind around 6 mph. Chance of precipitation is 70%.

Thursday: A chance of showers. Cloudy, with a high near 41. Northeast wind around 8 mph. Chance of precipitation is 40%.

Thursday Night: A chance of showers. Cloudy, with a low around 35. East wind 3 to 6 mph. Chance of precipitation is 50%.

Friday: Cloudy, with a high near 65. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

Friday Night: Mostly cloudy, with a low around 52. Southwest wind around 8 mph.

Saturday: Mostly cloudy, with a high near 67. West wind around 7 mph becoming east in the afternoon.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 43. East wind around 7 mph. Chance of precipitation is 50%.

Sunday: A chance of showers. Mostly cloudy, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 43. Southwest wind around 8 mph. Chance of precipitation is 50%.

Monday: A chance of showers. Mostly cloudy, with a high near 53. Northwest wind around 8 mph. Chance of precipitation is 30%.

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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)

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.

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

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