Forecast Details for Somerville, MA

Recent Locations: Piermont, NY La Coste, TX Somerville, MA

Overnight: Mostly clear, with a low around 21. South wind around 5 mph.

Saturday: Mostly sunny, with a high near 47. South wind 6 to 10 mph, with gusts as high as 23 mph.

Saturday Night: Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 25. Light and variable wind becoming northwest 5 to 7 mph after midnight.

Sunday: Snow likely, mainly after noon. Mostly cloudy, with a high near 35. North wind 6 to 8 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Sunday Night: A chance of snow, mainly before 9pm. Mostly clear, with a low around 10. Northwest wind 7 to 9 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Monday: Sunny, with a high near 26. Northwest wind around 7 mph.

Monday Night: Mostly clear, with a low around 11. Light southwest wind.

Tuesday: A chance of snow between 1pm and 2pm, then a chance of rain after 2pm. Partly sunny, with a high near 41. South wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Tuesday Night: Rain likely, possibly mixed with snow before 9pm, then rain. Low around 34. South wind around 8 mph. Chance of precipitation is 90%.

Wednesday: Rain likely, mainly before 7am. Mostly sunny, with a high near 46. West wind 5 to 7 mph becoming north in the afternoon. Chance of precipitation is 60%.

Wednesday Night: Partly cloudy, with a low around 31. Light southwest wind.

Thursday: A chance of rain. Mostly cloudy, with a high near 48. South wind 3 to 8 mph. Chance of precipitation is 40%.

Thursday Night: A chance of rain. Cloudy, with a low around 39. South wind around 7 mph becoming east after midnight. Chance of precipitation is 50%.

Friday: A chance of rain. Mostly cloudy, with a high near 47. North wind 7 to 9 mph. Chance of precipitation is 40%.

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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 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

Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain