Forecast Details for North Chelmsford, MA

Recent Locations: Sharpsburg, OH Holt, CA North Chelmsford, MA

Today: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 68. Light and variable wind becoming north 5 to 9 mph in the morning. Chance of precipitation is 40%.

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.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 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