Forecast Details for Boston, MA

Recent Locations: Boston, MA

Tonight: Mostly clear, with a low around 72. Calm wind.

Wednesday: Sunny and hot, with a high near 93. Calm wind becoming east 5 to 7 mph in the afternoon.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind around 6 mph becoming north after midnight. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 75. Northeast wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 62. Northeast wind around 6 mph. Chance of precipitation is 70%.

Friday: Showers likely, mainly before 9am. Mostly cloudy, with a high near 69. Northeast wind 8 to 11 mph. Chance of precipitation is 60%.

Friday Night: Partly cloudy, with a low around 58. North wind around 6 mph.

Saturday: Sunny, with a high near 78. North wind around 7 mph becoming east in the afternoon.

Saturday Night: Clear, with a low around 59. South wind around 5 mph becoming light and variable in the evening.

Sunday: Sunny, with a high near 85. Southwest wind 3 to 8 mph.

Sunday Night: Mostly clear, with a low around 64. Southwest wind around 7 mph.

Monday: Mostly sunny, with a high near 85. South wind 5 to 7 mph.

Monday Night: Partly cloudy, with a low around 64. Southwest wind 5 to 7 mph.

Tuesday: Mostly sunny, with a high near 84. Light and variable wind becoming east 5 to 8 mph in the morning.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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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 Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation