Forecast Details for North Chelmsford, MA

Recent Locations: Sharpsburg, OH Sabetha, KS North Chelmsford, MA

Today: A slight chance of showers between 11am and 3pm. Partly sunny, with a high near 69. North wind 6 to 9 mph. Chance of precipitation is 20%.

Tonight: Showers likely, mainly between 4am and 5am. Mostly cloudy, with a low around 36. Northeast wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Thursday: A chance of showers. Patchy fog between 9am and 11am. Otherwise, cloudy, with a high near 41. East wind around 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: A chance of showers. Cloudy, with a low around 35. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

Friday: Mostly cloudy, with a high near 67. Calm wind becoming southwest 5 to 9 mph in the afternoon.

Friday Night: Mostly cloudy, with a low around 54. Southwest wind around 7 mph.

Saturday: Partly sunny, with a high near 70. Light and variable wind becoming east 5 to 8 mph in the morning.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 42. East wind 5 to 7 mph. Chance of precipitation is 40%.

Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 66. Southwest wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

Sunday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 38. West wind around 9 mph. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 54. Northwest wind around 9 mph.

Monday Night: Mostly clear, with a low around 32. Northwest wind around 5 mph becoming calm in the evening.

Tuesday: Mostly sunny, with a high near 50. Northwest wind 3 to 7 mph.

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North America Water Vapor (Moisture)

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Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds