Forecast Details for Boston, MA

Recent Locations: Boston, MA

Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 67. East wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers and thunderstorms, mainly before 2pm, then a slight chance of thunderstorms after 5pm. Patchy fog. High near 73. East wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night: A slight chance of showers between 8pm and 3am. Patchy fog. Otherwise, cloudy, with a low around 66. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.

Friday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening.

Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming east 5 to 7 mph in the morning.

Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 66. Southeast wind around 6 mph becoming calm in the evening.

Sunday: Partly sunny, with a high near 83. Southeast wind 3 to 8 mph.

Sunday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 68. South wind 3 to 6 mph.

Monday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Southwest wind 5 to 8 mph.

Monday Night: Partly cloudy, with a low around 71. Southwest wind 3 to 6 mph.

Tuesday: Mostly sunny, with a high near 89. West wind around 6 mph becoming south in the afternoon.

Tuesday Night: Mostly cloudy, with a low around 72. South wind 3 to 6 mph.

Wednesday: Partly sunny and hot, with a high near 90. Light and variable wind becoming southeast 5 to 7 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 Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds