Forecast Details for Watertown, MA

Recent Locations: Summerland Key, FL Dolores, CO Watertown, MA

Tonight: Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 52. East wind around 6 mph becoming light and variable.

Tuesday: Areas of fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 85. South wind 6 to 11 mph.

Tuesday Night: Partly cloudy, with a low around 62. Southwest wind 8 to 11 mph.

Wednesday: Sunny, with a high near 89. Southwest wind 9 to 11 mph.

Wednesday Night: Mostly clear, with a low around 65. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

Thursday: A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 3pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 88. Southwest wind 8 to 11 mph. Chance of precipitation is 20%.

Thursday Night: A chance of showers. Mostly cloudy, with a low around 64. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.

Friday: Mostly sunny, with a high near 81. West wind 6 to 10 mph.

Friday Night: Mostly clear, with a low around 57. Northwest wind around 7 mph.

Saturday: Sunny, with a high near 75. Northwest wind around 7 mph.

Saturday Night: Partly cloudy, with a low around 53. Southeast wind around 6 mph becoming light and variable after midnight.

Sunday: Partly sunny, with a high near 68. East wind 6 to 10 mph.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 52. East wind 5 to 7 mph. Chance of precipitation is 30%.

Memorial Day: Partly sunny, with a high near 68. East wind 6 to 9 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 are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds