Forecast Details for Acton, MA

Recent Locations: Mauk, GA Anita, IA Acton, MA

Tonight: A slight chance of showers and thunderstorms before 11pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 60. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.

Wednesday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Showers and thunderstorms likely. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 54. Light east wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers, with thunderstorms also possible after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 71. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.

Friday: A chance of showers and thunderstorms, then showers likely after 2pm. Mostly cloudy, with a high near 69. Light and variable wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 60%.

Friday Night: A chance of showers before 1am. Mostly cloudy, with a low around 48. Northeast wind 3 to 5 mph. Chance of precipitation is 40%.

Saturday: Mostly cloudy, with a high near 59. East wind around 6 mph.

Saturday Night: Mostly cloudy, with a low around 47. Southeast wind 3 to 5 mph.

Sunday: A chance of showers after 11am. Mostly cloudy, with a high near 67. South wind 5 to 9 mph. Chance of precipitation is 50%.

Sunday Night: Showers likely. Mostly cloudy, with a low around 38. West wind around 8 mph. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 50. West wind around 10 mph, with gusts as high as 23 mph.

Monday Night: Partly cloudy, with a low around 30. West wind around 7 mph.

Tuesday: Sunny, with a high near 51. Northwest wind 7 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 are Cumulus Clouds?

Home - Education - Cloud Types - 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

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog