Forecast Details for Washington, DC

Recent Locations: Washington, DC

Current Alerts for Washington, DC: Heat Advisory

Today: Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 107. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.

Tonight: Scattered showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 11pm, then scattered showers and thunderstorms after 11pm. Mostly cloudy, with a low around 72. Light east wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. East wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.

Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.

Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 50%.

Sunday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.

Monday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Monday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.

Tuesday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 92. Chance of precipitation is 60%.

Tuesday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

Wednesday: Mostly sunny, with a high near 90.

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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 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

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails