Forecast Details for Merrimac, MA

Recent Locations: Merrimac, MA  
Tonight: Patchy frost after 11pm. Otherwise, clear, with a low around 28. Southeast wind around 6 mph becoming calm in the evening.
Friday: Sunny, with a high near 56. Light and variable wind becoming southeast around 6 mph in the morning.
Friday Night: Clear, with a low around 35. South wind around 6 mph becoming calm after midnight.
Saturday: Sunny, with a high near 61. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night: A chance of showers, mainly after 3am. Mostly cloudy, with a low around 43. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Sunday: A chance of showers, mainly before 10am. Mostly cloudy, with a high near 64. Southwest wind 10 to 13 mph. Chance of precipitation is 30%.
Sunday Night: Mostly cloudy, with a low around 50. South wind 7 to 9 mph becoming west after midnight.
Monday: Partly sunny, with a high near 65. North wind around 9 mph becoming east in the afternoon.
Monday Night: A chance of showers after 3am. Mostly cloudy, with a low around 47. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Tuesday: A chance of showers before 7am, then a chance of showers after 2pm. Mostly cloudy, with a high near 60. Southeast wind 8 to 13 mph. Chance of precipitation is 30%.
Tuesday Night: A chance of showers. Mostly cloudy, with a low around 48. Southeast wind 9 to 11 mph becoming southwest after midnight. Chance of precipitation is 40%.
Wednesday: A chance of showers. Partly sunny, with a high near 64. Northwest wind 9 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 30%.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 9 mph becoming west after midnight. Chance of precipitation is 30%.
Thursday: Partly sunny, with a high near 63. West wind 10 to 14 mph.

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Current U.S. National Radar--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

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