Forecast Details for South Harwich, MA

Recent Locations: Brownsville, MD Palco, KS South Harwich, MA

Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 47. Southwest wind around 8 mph. Chance of precipitation is 20%.

Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 59. South wind 6 to 9 mph.

Wednesday Night: A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 46. West wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: Partly sunny, with a high near 56. Southwest wind 6 to 10 mph.

Thursday Night: Mostly cloudy, with a low around 49. Southwest wind around 7 mph.

Friday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 54. Southwest wind 6 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

Friday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 44. Northeast wind around 6 mph. Chance of precipitation is 30%.

Saturday: Mostly cloudy, with a high near 49. Northeast wind 6 to 8 mph.

Saturday Night: Mostly cloudy, with a low around 44. Light and variable wind becoming east around 5 mph in the evening.

Sunday: A chance of showers after 3pm. Mostly cloudy, with a high near 55. South wind 6 to 11 mph. Chance of precipitation is 30%.

Sunday Night: Showers likely. Mostly cloudy, with a low around 40. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 48. West wind 10 to 13 mph.

Monday Night: Partly cloudy, with a low around 34. Northwest wind around 10 mph, with gusts as high as 20 mph.

Tuesday: Sunny, with a high near 46. Northwest wind around 10 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain