Forecast Details for Lancaster, MA

Recent Locations: Fallentimber, PA Edgecomb, ME Lancaster, MA

Tonight: A chance of showers, mainly between 4am and 5am. Patchy fog after 5am. Otherwise, cloudy, with a low around 37. East wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: A chance of showers and thunderstorms before noon, then showers and possibly a thunderstorm between noon and 3pm, then showers after 3pm. Patchy fog before 10am. High near 57. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night: A chance of showers, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 34. West wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Monday: Mostly sunny, with a high near 50. West wind 9 to 11 mph, with gusts as high as 22 mph.

Monday Night: A slight chance of rain before 3am, then a slight chance of rain and snow between 3am and 4am, then a chance of snow after 4am. Partly cloudy, with a low around 31. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.

Tuesday: A chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 11am, then a chance of rain showers after 11am. Partly sunny, with a high near 47. Light west wind becoming northwest 5 to 10 mph in the morning. Chance of precipitation is 40%. Little or no snow accumulation expected.

Tuesday Night: Mostly clear, with a low around 23. Northwest wind 3 to 5 mph.

Wednesday: Sunny, with a high near 50. Calm wind becoming west around 5 mph in the afternoon.

Wednesday Night: Mostly clear, with a low around 29. South wind 3 to 5 mph.

Thursday: Mostly sunny, with a high near 59. South wind 5 to 11 mph, with gusts as high as 21 mph.

Thursday Night: Partly cloudy, with a low around 40. South wind around 7 mph.

Friday: Mostly sunny, with a high near 65. West wind 5 to 8 mph.

Friday Night: Partly cloudy, with a low around 40. Southwest wind around 5 mph.

Saturday: Mostly sunny, with a high near 65. Southwest wind 5 to 7 mph.

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Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds